SIRIUS 3RU2/3RB3 overload relays 5.1 Standards 5.1.1 Standards 5 Applicable standards 3RU21 thermal overload relays and 3RB30/3RB31 solid-state overload relays meet the requirements of the following standards: Table 5- 1 Standards IEC/EN 60947-1 IEC/EN 60947-4-1 IEC/EN 60947-5-1 IEC 61000-4; UL 508/CSA C 22.2 Device standards EMC standard 3RB30/3RB31 solid-state overload relays also meet the requirements of EMC standards.
SIRIUS 3RU2/3RB3 overload relays 5.2 Product description 5.2 Product description 5.2.1 Introduction 3RU21 thermal overload relays 3RU21 thermal overload relays up to 40 A have been designed to provide current-dependent protection for loads with normal starting against impermissibly high temperature rises due to overload, phase asymmetry or phase failure. An overload or phase failure results in an increase of the motor current beyond the set rated motor current.
SIRIUS 3RU2/3RB3 overload relays 5.2 Product description Accessories The accessories have been tailored to the overload relays; they can be mounted easily and without the need for tools. 5.2.2 Versions Sizes, setting ranges, and device versions The table below provides an overview of the various sizes in which 3RU21 thermal overload relays and 3RB30/3RB31 solid-state overload relays are available.
SIRIUS 3RU2/3RB3 overload relays 5.2 Product description 5.2.3 Applications Table 5- 3 Overview of applications Applications 3RU21 System protection 3RB30/3RB31 ✓1) ✓1) Motor protection ✓ ✓ Alternating current, 3-phase ✓ ✓ Alternating current, 1-phase ✓ - Direct current ✓ - 1) In the main circuit, the devices provide overload protection for the assigned electrical loads (e.g. motors), feeder cable, and other switching and protection devices in the respective load feeder.
SIRIUS 3RU2/3RB3 overload relays 5.2 Product description The advantages of load feeders with overload relays Installing load feeders with overload relays (fuses + contactor + overload relay or MSP for starter combinations/circuit breaker (acc. to UL) + contactor + overload relay) has the following advantages over configurations without overload relays (motor starter protector + contactor): ● Overload release and short-circuit release are signaled separately.
SIRIUS 3RU2/3RB3 overload relays 5.2 Product description 5.2.4 3RU21 thermal overload relays 1 Connection for contactor mounting: In terms of their electrical and mechanical features and their design, these pins are perfectly compatible with the contactors and soft starters for the direct mounting of overload relays. Stand-alone assembly is also an option (in conjunction with a stand-alone assembly module).
SIRIUS 3RU2/3RB3 overload relays 5.2 Product description 5.2.5 3RB30/3RB31 solid-state overload relays 1 Connection for contactor mounting: In terms of their electrical and mechanical features and their design, these pins are perfectly compatible with the contactors and soft starters for the direct mounting of overload relays. Standalone assembly is also an option (in some cases in conjunction with a stand-alone assembly module).
SIRIUS 3RU2/3RB3 overload relays 5.2 Product description Auxiliary contacts 3RB30/3RB31 solid-state overload relays are equipped with an NO contact for the "tripped" message and an NC contact for disconnecting the contactor.
SIRIUS 3RU2/3RB3 overload relays 5.3 Product combinations 5.3 Product combinations Since the products from the innovative SIRIUS modular system are matched to one another both electrically and mechanically, they can be combined quickly and easily. Reference More information ... Can be found in the chapter titled ...
SIRIUS 3RU2/3RB3 overload relays 5.4 Functions 5.4 Functions 5.4.1 Protection against overload, phase failure, and phase asymmetry 5.4.1.1 Functional principle Overload relays are used for the current-dependent protection of electrical consumers (such as motors) against excessive temperature rises, which may be caused by overloading, asymmetrical power consumption, a phase failure in the line supply conductor or a locked rotor.
SIRIUS 3RU2/3RB3 overload relays 5.4 Functions 5.4.1.2 Time-delayed overload release The time-delayed overload release is based on a thermal motor model and will trigger a release dependent upon the extent of the overload. 3RU21 thermal overload relays and 3RB30/3RB31 solid-state overload relays compensate temperature up to 60 °C according to IEC 60947-4-1. 5.4.1.
SIRIUS 3RU2/3RB3 overload relays 5.4 Functions 5.4.1.4 Tripping characteristics Introduction The tripping characteristic curves map the relationship between tripping time and tripping current as a multiple of the current setting Ie ; they are specified for symmetrical 3-pole and for 2-pole loading from cold. The lowest current at which tripping will occur is known as the minimum tripping current. According to IEC/EN 60947-4-1/VDE 0660 Part 102, this current has to lie within specific defined limits.
SIRIUS 3RU2/3RB3 overload relays 5.4 Functions Tripping characteristic curves for the 3RU21 thermal overload relay The tripping characteristic curve for the 3RU21 thermal overload relay loaded at 3 poles (see the figure below) applies subject to the prerequisite that all three bimetal strips are loaded with the same current at the same time.
SIRIUS 3RU2/3RB3 overload relays 5.4 Functions Tripping characteristic curves for 3RB30/3RB31 solid-state overload relays The tripping characteristic curve for an overload relay loaded at 3 poles from cold (see Figure 1) applies subject to the prerequisite that all three phases are loaded with the same current at the same time.
SIRIUS 3RU2/3RB3 overload relays 5.4 Functions 5.4.2 Ground-fault protection (3RB31 only) Introduction In addition to current-dependent protection for loads against impermissibly high temperature rise caused by overload, phase asymmetry, and phase failure, 3RB31 solid-state overload relays feature internal ground-fault detection (not possible in conjunction with contactor assemblies for star-delta (wye-delta) start).
SIRIUS 3RU2/3RB3 overload relays 5.4 Functions 5.4.3 Auxiliary contacts Function The auxiliary contacts control the contactor and signal overloads. Auxiliary contact Response to overload NC contact (NC 95-96) Disconnects the contactor, thereby protecting: The contactor The cables The load NO contact (NO 97-98) Sends a signal, e.g.
SIRIUS 3RU2/3RB3 overload relays 5.4 Functions 5.4.4 Indication of the operating state The prevailing operating state of the 3RU21/3RB30/3RB31 relays is indicated by the position of the marker on the "TEST function/Switch position indicator" slide. If the relays are operating without errors, the slide marker will be set to "I". When a device trips, the slide marker moves to "0".
SIRIUS 3RU2/3RB3 overload relays 5.4 Functions 5.4.6 Additional functions RESET function There are various ways to reset the device following an overload release. Table 5- 7 RESET options for for overload relays Overload relay Auto RESET Manual RESET Elect. remote RESET Mech. remote RESET (accessory) Release slide Cable release 3RU21 ✓ ✓ ✓ ✓ ✓ (accessory) 3RB30 ✓ ✓ ✓ ✓ - 3RB31 ✓ ✓ ✓ ✓ ✓ (built-in) The relay cannot be reset until after the recovery time has elapsed.
SIRIUS 3RU2/3RB3 overload relays 5.5 Configuration 5.5 Configuration 5.5.1 Overload relays in motor feeders 5.5.1.1 Overload relays in motor feeders The individual overload relay families protect the following loads against the consequences of an overload, a phase failure, and phase asymmetry.
SIRIUS 3RU2/3RB3 overload relays 5.5 Configuration Appropriate contactors are required to protect loads. The table below provides an overview of the assignments between overload relays and contactors, along with their power ratings. Table 5- 9 Overload relay with contactor assemblies Overload relay Current range Contactors (type, size, rating in kW) Type [A] 3RT201 S00 3/4/5.5/7.5 3RU2111) 0.11 … 16 3RU2121) 3RB3011) 3RB3021) 3RB3111) 3RB3121) 1) If 3RT202 S0 5.5/7.5/11/15 /18.5 ✓ - 1.
SIRIUS 3RU2/3RB3 overload relays 5.5 Configuration 5.5.1.3 Contactor assembly for star-delta (wye-delta) start Overload relays in contactor assemblies for star-delta (wye-delta) start When using overload relays in conjunction with contactor assemblies for star-delta (wyedelta) start, you need to bear in mind that only 1/√3 times the motor current flows through the line contactor. An overload relay mounted onto a line contactor has to be set to this 0.58times motor current.
SIRIUS 3RU2/3RB3 overload relays 5.5 Configuration 5.5.2 Short-circuit protection Either fuses (fused design) or motor starter protectors/circuit breakers (acc. to UL) (fuseless design) must be used for short-circuit protection. The types of coordination must also be considered when selecting load feeders from the tables. References 5.5.
SIRIUS 3RU2/3RB3 overload relays 5.5 Configuration Ambient temperatures for 3RU21 overload relays 3RU21 thermal overload relays compensate temperature in the temperature range from – 40 °C to +60 °C according to IEC/EN 60947-4-1. At temperatures from +60 °C to +80 °C, the upper set value of the setting range has to be reduced by a specific factor in accordance with the table below.
SIRIUS 3RU2/3RB3 overload relays 5.6 Mounting 5.6 Mounting 5.6.1 Mounting options Mounting options for the 3RU21 3RU21 thermal overload relays are matched to 3RT contactors in terms of their electrical and mechanical features. As a result, direct mounting can be achieved easily. Alternatively, the devices are suitable for stand-alone assembly.
SIRIUS 3RU2/3RB3 overload relays 5.6 Mounting 5.6.3 Mounting/Disassembly Direct mounting on 3RT contactor The diagram below shows an example mounting scenario based on mounting the 3RU21 thermal overload relay, size S0, on the 3RT2 contactor. The contactor/overload relay combinations can be snapped onto 35 mm DIN rails according to DIN EN 50022.
SIRIUS 3RU2/3RB3 overload relays 5.6 Mounting Table 5- 15 Mounting the 3RU21 overload relay with a spring-loaded connection system Step Operating instruction 1 Insert the contacts (a) into the central opening of the main conductor terminals on the contactor (see below, a), with the contacts flush to the right. Make sure that the guide tabs are inserted into the designated slots on the contactor. Figure The overload relay will sit flush with the contactor on the left- and right-hand sides.
SIRIUS 3RU2/3RB3 overload relays 5.6 Mounting Mounting on mounting plate Screw mounting on a mounting plate is an alternative option to DIN rail mounting. For screw mounting, the contactor first has to be fastened with screws and then the overload relay mounted on the top of the contactor as shown in the figures. Disassembly To disassemble the contactor/relay combination from the DIN rail, press the contactor down and pull it toward you.
SIRIUS 3RU2/3RB3 overload relays 5.6 Mounting Note Ring cable lug connection system The procedure for disassembling the overload relays with ring cable lug connection system is similar to that for disassembly with screw-type connection system.
SIRIUS 3RU2/3RB3 overload relays 5.7 Connection 5.7 Connection Connection types The overload relays are available with the following connection types for the main and auxiliary current paths: ● Screw-type connection system ● Spring-loaded connection system ● Ring cable lug connection system (3RU21 only) with optional terminal covers (accessories) Conductor cross-sections The conductor cross-sections of the devices in the SIRIUS modular system are matched to one another on a size-specific basis.
SIRIUS 3RU2/3RB3 overload relays 5.7 Connection 5.7.1 Connection of 3RU21 overload relay Control circuit An additional power supply is not required for the operation of 3RU21 thermal overload relays. Connection of terminals Terminal Designation 2T1 Main circuit terminals 4T2 6T3 95 NC contact (NC 95-96) 96 97 NO contact (NO 97-98) 98 14/22 Feed-through contactor auxiliary switch (S00 only) A2 Feed-through contactor coil terminal (S00 only) Reference 514 More information ...
SIRIUS 3RU2/3RB3 overload relays 5.7 Connection 5.7.2 Connection of 3RB30/3RB31 overload relays Control circuit 3RB30/3RB31 solid-state overload relays have an intrinsic supply; i.e. an additional power supply is not required.
SIRIUS 3RU2/3RB3 overload relays 5.8 Operation 5.8 Operation 5.8.1 Setting the current Setting the rated motor current on 3RU21/3RB30/3RB31 overload relays 3RU21 thermal overload relays and 3RB30/3RB31 solid-state overload relays are set to the rated motor current with a rotary knob. The scale on the rotary knob is in amperes.
SIRIUS 3RU2/3RB3 overload relays 5.8 Operation 5.8.2 Setting the tripping class/ground-fault detection (3RB31) In the case of the 3RB31 solid-state overload relay, it is also possible to select the tripping class (CLASS 5, 10, 20 or 30) via a second rotary knob using a screwdriver and activate or deactivate internal ground-fault monitoring.
SIRIUS 3RU2/3RB3 overload relays 5.8 Operation Recovery time following overload release This time gives the load a chance to cool down. ● 3RU21 thermal overload relays The device cannot be reset until the bimetal strips have cooled down. The recovery time is dependent upon the tripping characteristic curve and the extent of the tripping current.
SIRIUS 3RU2/3RB3 overload relays 5.8 Operation Setting the RESET function on the 3RB30/3RB31 solid-state overload relay In the case of the 3RB30/3RB31 solid-state overload relays, a slide switch can be used to choose between automatic and manual reset. As an alternative to the reset options, an electrical remote RESET (manual/automatic) can be implemented on 3RB31 solid-state overload relays by applying a 24 V DC voltage at terminals A3 and A4.
SIRIUS 3RU2/3RB3 overload relays 5.8 Operation 5.8.4 TEST function Test function for the 3RU21 thermal overload relay The TEST slide can be used to check whether the operational 3RU21 thermal overload relay is working properly. The tripping of the relay can be simulated by moving the slide with a screwdriver. This simulation process opens the NC contact and closes the NO contact, thereby checking that the auxiliary circuit has been wired to the overload relay correctly.
SIRIUS 3RU2/3RB3 overload relays 5.8 Operation Test function for the 3RB30/3RB31 solid-state overload relay The correct function of the relay when ready for operation can be checked by pressing the TEST button with the motor current flowing (device/electronics test). Current sensing, the motor model, and the tripping unit are tested. If these components are OK, the device is tripped in accordance with the table below. In the event of an error, the device is not tripped.
SIRIUS 3RU2/3RB3 overload relays 5.8 Operation 5.8.5 Response of the auxiliary contacts Auxiliary contacts The overload relay is equipped with an NO contact (NO 97-98) for the "tripped" signal and an NC contact (NC 95-96) for disconnecting the contactor. The auxiliary contacts have high contact reliability; this makes them suitable for PLCs. Furthermore, the high switching capacity facilitates direct switching of the contactor coil.
SIRIUS 3RU2/3RB3 overload relays 5.9 Accessories 5.9 Accessories 5.9.1 Accessories For maximum flexibility, accessories can be added to the overload relays as required, easily, and without the need for tools.
SIRIUS 3RU2/3RB3 overload relays 5.9 Accessories 5.9.2 Terminal support for stand-alone assembly 5.9.2.1 Description Modules for stand-alone assembly 3RU21 thermal overload relays and 3RB30/3RB31 solid-state overload relays can also be installed individually with the corresponding terminal supports for stand-alone assembly. The terminal supports for stand-alone assembly are available for both screw-type and spring-loaded connection systems. 5.9.2.
SIRIUS 3RU2/3RB3 overload relays 5.9 Accessories Table 5- 21 Mounting the terminal support (spring-loaded connection system) Step Operating instruction 1 Insert the contacts (a) into the central opening of the main conductor terminals on the terminal support, with the contacts flush to the right. Figure Make sure that the guide tabs are inserted into the designated slots on the terminal support.
SIRIUS 3RU2/3RB3 overload relays 5.9 Accessories Table 5- 23 Disassembling the terminal support (spring-loaded connection system) Step Operating instruction 1 Release the overload relay by pushing down the clip on the underside of the terminal support. 2 Position the screwdriver on the terminal support as shown in the figure. Carefully dislodge the overload relay from the contactor. 3 Pull the overload relay forward and away from the terminal support.
SIRIUS 3RU2/3RB3 overload relays 5.9 Accessories 5.9.3 Mechanical remote RESET (release slide) 5.9.3.1 Description Preliminary observation: Mechanical remote RESET A mechanical remote reset option is also available for thermal overload relays and solidstate overload relays.
SIRIUS 3RU2/3RB3 overload relays 5.9 Accessories Step Operating instruction 3 Attach the former to the release slide. 3 Fit the pushbutton (3SB3000-0EA11) in the front cover. 4 (Optional) Attach the pushbutton to the extension plunger (3SX1335).
SIRIUS 3RU2/3RB3 overload relays 5.9 Accessories 5.9.4 Mechanical remote RESET (cable release) 5.9.4.1 Description Preliminary observation: Mechanical remote RESET A mechanical remote reset option is also available for thermal overload relays and solidstate overload relays.
SIRIUS 3RU2/3RB3 overload relays 5.9 Accessories 5.9.4.2 Mounting/Disassembly The figure below shows how the cable release with holder is mounted based on the example of a size S00 3RU21 thermal overload relay: Table 5- 26 Mounting the cable release Step Operating instruction 1 Attach the hook on the release slide to the designated opening on the overload relay. 2 Fold the module up so that the locking latch snaps into the overload relay.
SIRIUS 3RU2/3RB3 overload relays 5.9 Accessories 5.9.5 Module for electrical remote RESET (3RU21 only) 5.9.5.1 Description Function An electrical remote RESET module which is compatible for use with all sizes is available for the 3RU21 thermal overload relay. This module enables the overload relay to be reset electrically from the control room following tripping. The module's coil is dimensioned for an operating duration of 0.2 s to 4 s; maintained-contact operation is not permissible. 5.9.5.
SIRIUS 3RU2/3RB3 overload relays 5.9 Accessories 5.9.5.3 Mounting/Disassembly The figure below shows how to assemble the electrical remote RESET module based on the example of size S0. Table 5- 29 Mounting the electrical remote RESET module on the thermal overload relay Step Operating instruction 1 Attach the hook to the designated opening. 2 Fold the module up so that the locking latch snaps into the overload relay.
SIRIUS 3RU2/3RB3 overload relays 5.9 Accessories 5.9.6 Sealable cover 5.9.6.1 Description Sealable cover There is one sealable cover for thermal overload relays and one for solid-state relays; both are compatible for use with all sizes. The 3RV2908-0P cover can be used as an accessory for 3RU2 thermal overload relays and 3RV2 motor starter protectors/circuit breakers (acc. to UL).
SIRIUS 3RU2/3RB3 overload relays 5.9 Accessories Step Operating instruction 3 Seal the cover to secure it against unauthorized removal. Figure Table 5- 32 Mounting the sealable cover on the 3RB30/3RB31 overload relay Step Operating instruction 1/2 Attach the hooks on the cover to the openings on the overload relay and fold the cover up. 3 Seal the cover to secure it against unauthorized removal.
SIRIUS 3RU2/3RB3 overload relays 5.9 Accessories 5.9.7 Covers for ring cable lug connections 5.9.7.1 Description Function Covers must be fitted to thermal overload relays with ring cable lug connection system to achieve finger-safety according to IEC 61140. Both line-side and output-side covers are available. Additional covers are not required for devices with spring-loaded and screw-type connection systems.
SIRIUS 3RU2/3RB3 overload relays 5.10 Technical data 5.10 Technical data 5.10.1 Performance features 5.10.1.1 General data Table 5- 33 General data for 3RU21 and 3RB30/3RB31 overload relays Feature Description Sizes Seamless current range 5.10.1.2 Table 5- 34 3RU21 3RB30/3RB31 Are matched to the dimensions, connections and technical features of the other devices in the SIRIUS modular system (contactors, soft starters, etc.
SIRIUS 3RU2/3RB3 overload relays 5.10 Technical data 5.10.1.
SIRIUS 3RU2/3RB3 overload relays 5.10 Technical data 5.10.1.
SIRIUS 3RU2/3RB3 overload relays 5.10 Technical data 5.10.2 3RU21 5.10.2.
SIRIUS 3RU2/3RB3 overload relays 5.10 Technical data Type Size Width 3RU21 16 S00 45 mm Degree of protection acc. to IEC 60529 IP20 Touch protection acc. to IEC 61140 Screw connection and spring-loaded terminals: finger-safe Ring cable lug connection: finger-safe only with optional terminal covers Shock resistance with sine acc. to IEC 60068-2-27 g/ms 3RU21 26 S0 45 mm 8 / 10 Electromagnetic compatibility (EMC) - Immunity Conducted interference suppression - Burst acc.
SIRIUS 3RU2/3RB3 overload relays 5.10 Technical data Type 3RU21 16 3RU21 26 Size S00 S0 Width 45 mm 45 mm Current setting A 0.11 to 0.16 to 11 to 16 1.8 to 2.5 to 34 to 40 Power loss per device (max.) W 3.9 ... 6.6 3.9 ...
SIRIUS 3RU2/3RB3 overload relays 5.10 Technical data Type Size Width 3RU21 16 S00 45 mm 3RU21 26 S0 45 mm Connection type Ring cable lug connection Connection screw M3, Pozidriv size 2 M4, Pozidriv size 2 Operating tool mm ∅ 5 to 6 ∅ 5 ... 6 Specified tightening torque Nm 0.8 to 1.2 2 to 2.5 Usable ring cable lugs mm d22) = min. 3.2, d32) = max. 7.5 d22) = min. 4.3, d32) = max. 12.
SIRIUS 3RU2/3RB3 overload relays 5.10 Technical data 5.10.2.
SIRIUS 3RU2/3RB3 overload relays 5.10 Technical data Type Size Width 3RU21 16 S00 45 mm 3RU21 26 S0 45 mm Short-circuit protection With fuse - Operating class gL/gG A 6 - Quick-response A 10 A 62) V 440 With miniature circuit breaker (C characteristic) Protective separation between auxiliary current paths acc. to IEC/EN 60947-1 CSA, UL, and UR rated data Auxiliary circuit – Switching capacity 1) 2) B600, R300 On request Up to Ik≤ 0.5 kA; ≤ 260 V 5.10.2.
SIRIUS 3RU2/3RB3 overload relays 5.10 Technical data Type Size Width 3RU21 16 S00 45 mm Connection type Ring cable lug connection Connection screw M3, Pozidriv size 2 Operating tool mm Specified tightening torque Nm 0.8 to 1.2 Usable ring cable lugs mm d22) = min. 3.2, d32) = max. 7.
SIRIUS 3RU2/3RB3 overload relays 5.10 Technical data 5.10.3 3RB30/3RB31 5.10.3.1 General technical data Table 5- 43 General technical data for 3RB30/3RB31 overload relays Type Size Width 3RB30 1., 3RB31 1. S00 45 mm Tripping in the event of Overload, phase failure, and phase asymmetry + ground fault (3RB31 only) Tripping class acc. to IEC/EN 60947-4-1 CLASS 3RB30 2., 3RB31 2.
SIRIUS 3RU2/3RB3 overload relays 5.10 Technical data Type Size Width 3RB30 1., 3RB31 1. S00 45 mm 3RB30 2., 3RB31 2. S0 45 mm Repeat terminals Coil repeat terminal Yes Not required Auxiliary switch repeat terminal Yes Not required Degree of protection acc. to IEC 60529 IP20 Touch protection acc. to IEC 61140 Finger-safe Shock resistance with sine acc. to IEC 60068-2-27 g/ms 15 / 112) Electromagnetic compatibility (EMC) - Immunity Conducted interference suppression - Burst acc.
SIRIUS 3RU2/3RB3 overload relays 5.10 Technical data 5.10.3.2 Table 5- 44 Main circuit Technical data for the main circuit, 3RB30/3RB31 overload relays Type 3RB30 1., 3RB31 1. S00 45 mm Size Width Rated insulation voltage Ui (pollution degree 3) V 690 Rated impulse withstand voltage Uimp kV 6 Rated operational voltage Ue V 690 3RB30 2., 3RB31 2. S0 45 mm Type of current DC current No AC current Yes, 50/60 Hz ± 5% Current setting A 0.1 to 0.4 to 4 to 16 Power loss per device (max.
SIRIUS 3RU2/3RB3 overload relays 5.10 Technical data 5.10.3.3 Table 5- 45 Conductor cross-sections main circuit Technical data for the main circuit connection, 3RB30/3RB31 overload relays Type Size Width 3RB30 1., 3RB31 1. S00 45 mm Connection type Screw terminals with box terminal 3RB30 2., 3RB31 2. S0 45 mm Connection screw M3, Pozidriv size 2 M4, Pozidriv size 2 Operating tool ∅ 5 to 6 ∅ 5 to 6 Tightening torque 0.8 to 1.2 2 to 2.5 Conductor cross-sections (min./max.
SIRIUS 3RU2/3RB3 overload relays 5.10 Technical data 5.10.3.4 Table 5- 46 Auxiliary circuit Technical data for the auxiliary circuit connection, 3RB30/3RB31 overload relays Type Size Width 3RB30 1., 3RB31 1. S00 45 mm Number of NO contacts 1 3RB30 2., 3RB31 2.
SIRIUS 3RU2/3RB3 overload relays 5.10 Technical data Type Size Width 3RB30 1., 3RB31 1. S00 45 mm 3RB30 2., 3RB31 2. S0 45 mm Ground-fault protection (3RB31 only) The information refers to sinusoidal fault currents at 50/60 Hz Tripping value IΔ > 0.75 x Imotor Operating range I Lower current setting < Imotor < 3.
SIRIUS 3RU2/3RB3 overload relays 5.11 Dimension drawings (dimensions in mm) 5.11 Dimension drawings (dimensions in mm) Note All dimensions are specified in mm. 5.11.1 Dimension drawings for 3RU21 thermal overload relays 3RU2116-..B0 (S00) 45 5 118 29 76 33 Figure 5-7 3RU2116-..B0 3RU2116-4.B1 (S00) 75 56 89 37 45 5 Figure 5-8 552 36 3RU2116-4.
SIRIUS 3RU2/3RB3 overload relays 5.11 Dimension drawings (dimensions in mm) 3RU2116-..C0 (S00) 94 136 35 45 5 64 Figure 5-9 3RU2116-..C0 3RU2116-..C1 (S00) 45 102 51 80 60 5 Figure 5-10 56 3RU2116-..
SIRIUS 3RU2/3RB3 overload relays 5.11 Dimension drawings (dimensions in mm) 3RU2126-..B0 (S0) 45 a 152 43 5 b a AC: 92; DC: 102 b AC: 34; DC: 44 Figure 5-11 3RU2126-..B0 3RU2126-4.B1 (S0) 45 90 5 97 44 62 44 Figure 5-12 554 3RU2126-4.
SIRIUS 3RU2/3RB3 overload relays 5.11 Dimension drawings (dimensions in mm) 3RU2126-..C0 (S0) a 5 185 51 45 b a AC: 93; DC: 103 b AC: 76; DC: 86 Figure 5-13 3RU2126-..C0 3RU2126-4.C1 (S0) 92 45 72 114 55 5 73 Figure 5-14 3RU2126-4.
SIRIUS 3RU2/3RB3 overload relays 5.11 Dimension drawings (dimensions in mm) 5.11.2 Dimension drawings for 3RB30/3RB31 solid-state overload relays 3RB3.1.-..B0 (S00) Figure 5-15 3RB3.1.-..B0 3RB3.1.-..B0 and 3RU2916-3AA01 (S00) Figure 5-16 3RB3.1.-..B0 and 3RU2916-3AA01 3RB3.1.-..E0 (S00) Figure 5-17 556 3RB3.1.-..
SIRIUS 3RU2/3RB3 overload relays 5.11 Dimension drawings (dimensions in mm) 3RB3.1.-..E0 and 3RU2916-3AC01 (S00) Figure 5-18 3RB3.1.-..E0 and 3RU2916-3AC01 3RB3.2.-..B0 D a AC: 87; DC: 97 Figure 5-19 3RB3.2.-..B0 3RB3.2.-..B0 and 3RU2926-3AA01 (S0) Figure 5-20 3RB3.2.-..
SIRIUS 3RU2/3RB3 overload relays 5.11 Dimension drawings (dimensions in mm) 3RB3.2.-..E0 (S0) D E a AC: 93; DC: 103 b AC: 88; DC: 98 Figure 5-21 3RB3.2.-..E0 3RB3.2.-..E0 and 3RU2926-3AC01 (S0) Figure 5-22 558 3RB3.2.-..
SIRIUS 3RU2/3RB3 overload relays 5.12 Circuit diagrams 5.12 Circuit diagrams Internal circuit diagrams You can find the internal circuit diagrams for SIRIUS Innovations products online in the image database (www.siemens.com/lowvoltage/bilddb). Enter the order number of the device in the "Order number" field and, in the "Type of object" selection menu on the left-hand side, select "Unit wiring diagram".
SIRIUS 3RU2/3RB3 overload relays 5.12 Circuit diagrams Internal circuit diagrams for 3RU21 6723 5(6(7 7(67 3RU2116-..B., 3RU2116-..J. / / / 7 7 7 Figure 5-24 $ Thermal overload relay, screw-type and ring cable lug connection systems, S00 6723 5(6(7 7(67 3RU2116-..C.
SIRIUS 3RU2/3RB3 overload relays 5.12 Circuit diagrams Internal circuit diagrams for 3RB30 5(6(7 7(67 3RB3016-..B. / / / 7 7 7 Figure 5-27 $ 3RB30 solid-state overload relay, screw-type connection system, S00 5(6(7 7(67 3RB3016-..E. / / / 7 7 7 Figure 5-28 3RB30 solid-state overload relay, spring-loaded connection system, S00 5(6(7 7(67 3RB3026-....
SIRIUS 3RU2/3RB3 overload relays 5.12 Circuit diagrams Internal circuit diagrams for 3RB31 5(6(7 7(67 3RB3113-..B. / / / $ 9 7 7 7 Figure 5-30 $ $ 3RB31 solid-state overload relay, screw-type connection system, S00 5(6(7 7(67 3RB3113-..E. / / / $ 9 7 7 7 Figure 5-31 $ 3RB31 solid-state overload relay, spring-loaded connection system, S00 / / / 5(6(7 7(67 3RB3123-....
