Siemens SIRIUS Motor Protection Circuit Breaker – S00 –
3RV2121-4BA10 (3RV2 Series)
The Siemens 3RV2121-4BA10 is a SIRIUS 3RV2 series
motor protection circuit breaker (MPCB) designed for safe protection of
three-phase motors against overload, short-circuit, and phase failure.
It is commonly used in MCC panels, motor starters, industrial automation
systems, pumps, compressors, conveyors, and HVAC applications where compact
and reliable motor protection is required.
This device belongs to the Size S0 frame and features
a thermal magnetic trip unit (Class 10), providing fast and dependable
disconnection of motors during fault conditions to prevent damage to both motor
and wiring.
It provides an adjustable overload setting range of 13–20
A along with a fixed magnetic short-circuit release of approximately 260
A, making it suitable for medium-duty motors (around 7.5 kW at 400V AC)
in industrial applications.
Key Features
|
Parameter |
Specification |
|
Product Model |
3RV2121-4BA10 |
|
Brand |
Siemens |
|
Series |
SIRIUS 3RV2 |
|
Type |
Motor Protection Circuit Breaker (MPCB) |
|
Frame Size |
S0 |
|
Current Setting Range |
13 – 20 A |
|
Short-Circuit Release |
260 A |
|
Tripping Class |
Class 10 |
|
Motor Power |
Up to approx. 7.5 kW (400 V AC) |
|
Rated Voltage |
220–690 V AC |
|
Frequency |
50/60 Hz |
|
Protection Functions |
Overload, short-circuit, phase failure |
|
Mounting Type |
DIN rail / panel mounting |
|
Coordination Type |
Motor starter combination |
|
Standards |
IEC 60947-4-1 |
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