Specifications
AS-Interface Slaves
Motor starters for operation in the control cabinet
3RA6 compact feeders / Accessories for
3RA6 direct-on-line and reversing starters
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Siemens IK PI · 2009
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Overview
Accessories for SIRIUS 3RA6 compact feeders
The following accessories are available specially for the 3RA6
compact feeders:
• AS-i add-on module: For communication of the compact
feeder with the control system using AS-Interface; also avail-
able as a version with two local inputs for safe disconnection.
The AS-i add-on module can be combined only in connection
with compact feeders with a rated control supply voltage of
24 V AC/DC.
• Addressing unit for addressing the AS-i add-on module
• External auxiliary switch blocks: Snap-on auxiliary switch as
versions 2 NO, 2 NC and 1 NO +1 NC with screw or spring-
loaded connections; the contacts of the auxiliary switch block
open and close jointly with the main contacts of the compact
feeder. The NC contacts are designed as mirror contacts.
• Control kit: aid for manually closing the main contacts in order
to check the wiring and motor direction under conditions of
short-circuit protection
• Adapter for screw fixing the compact feeder, including
push-in lugs
• Main conductor terminal: Available with screw and
spring-loaded terminals
Accessories for parallel wiring
The terminal block for "Self-Protected Combination Motor
Controller", type E is available for complying with the clearance
and creepage distances demanded according to UL 508.
Accessories for infeed using 3-phase busbar systems
The 3-phase busbars can be used as an easy, time-saving and
clearly arranged means of feeding SIRIUS 3RA6 compact feed-
ers with screw connection. Circuit breaker sizes S00 and S0 can
also be integrated.
The busbars are suitable for between 2 and 5 devices. However,
any kind of extension up to a maximum summation current of
63 A is possible by clamping the tags of an additional busbar
(rotated by 180°) underneath the terminals of the respective last
circuit breaker.
A connecting piece is required for the combination with circuit
breaker size S00. The motor starter protectors are supplied by
appropriate feeder terminals. Special feeder terminals are re-
quired for constructing "Type E Starters" according to UL/CSA.
The 3-phase busbar systems are finger-safe but empty connec-
tion tags must be fitted with covers. They are designed for any
short-circuit stress which can occur at the output side of con-
nected SIRIUS 3RA6 compact feeders or circuit breakers.
Busbar adapters for 60 mm systems
The compact feeders are mounted directly with the aid of busbar
adapters on busbar systems with 60 mm center-to-center clear-
ance in order to save space and to reduce infeed times and
costs. These feeders are suitable for copper busbars with a
width from 12 to 30 mm. The busbars can be 4 to 5 mm or 10 mm
thick.
The 8US busbar system can be loaded with a maximum summa-
tion current of 630 A.
The "reversing starter" version requires a device holder along
side the busbar adapter for lateral mounting.
The compact feeders are snapped onto the adapter and con-
nected on the line side. This prepared unit is then plugged
directly onto the busbar system, and is thus connected both
mechanically and electrically at the same time.
For more accessories such as incoming and outgoing terminals,
flat copper profiles etc., see LV1, Chapter 14, "8US Busbar
Systems, 60 mm Busbar System".
Accessories for operation with closed control cabinet doors
Door-coupling rotary operating mechanisms for standard and
emergency-stop applications are available for operating the
compact feeder with closed control cabinet doors.