Brochure

Table Of Contents
3RV1 Circuit Breaker/MSP
SIRIUS System Manual
2-6 GWA 4NEB 430 0999-02 DS 01
2.2.1 General description
Fields of application The 3RV1 circuit breaker/MSPs are suitable for:
Motor and plant protection
Starter protection (short-circuit protection)
Transformer protection
Fuse Monitoring
The 3RV16 11-0BD10 circuit breaker/MSP, frame size S00, is used for fuse
monitoring.
Releases 3RV1 circuit breaker/MSPs have:
Inverse-time delay, thermal overload releases
Instantaneous short-circuit releases
The overload releases can be set to the load current.
The short-circuit releases are set permanently to 13 times the rated current,
which allows motors to start up without problems. Circuit breaker/MSPs
used for transformer protection are set to 19 times the rated current to
avoid being tripped by the high inrush current.
When the circuit breaker/MSPs are tripped, in the case of frame size S00
the toggle switch goes into the tripped position, and in the case of frame
sizes S0 to S3 the rotary switch switches to the tripped position. Before it is
switched on again, the rotary switch must be put in the 0 position manually
(reset) to avoid switching to the fault inadvertently.
In the case of circuit breaker/MSPs with a rotary switch, the tripping opera-
tion can also be reported electrically by means of an alarm switch.
Tripping classes In acc. with IEC 947-4-1:
Frame sizes S00 to S3: class 10
Frame sizes S2/S3: class 20
Auxiliary release The circuit breaker/MSPs can also be equipped with one of the following
auxiliary releases:
Shunt release
Undervoltage release
Undervoltage release with leading auxiliary contacts
Auxiliary contacts The 3RV1 can use a transverse auxiliary contacts and/or a side mounted
auxiliary contacts (Section 2.4 Accessories).
Shock protection All frame sizes S00 to S3 are touch safe according to DIN VDE 0106
part 100. Additional protection covers are offered for frame sizes S2 and S3.
Frame size S2, S3: terminal covers for box terminals
Frame size S3: terminal covers for lug and bar connection