Siemens Circuit Breaker – Motor Protection (Size S2) –
3RV2031-4XA10
The Siemens 3RV2031-4XA10 is a SIRIUS 3RV2 series
motor protection circuit breaker (MPCB) designed for reliable protection of
three-phase motors against overload, short-circuit, and phase failure.
It is widely used in motor control centers (MCC), industrial automation
panels, pump systems, compressors, conveyors, and HVAC applications where
compact and dependable motor protection is required.
This device belongs to the Size S2 frame (3RV2 series)
and features a thermal magnetic trip unit (Class 10). It provides adjustable
overload protection (49–59 A range) along with a fixed magnetic
short-circuit release (~845 A), ensuring fast disconnection during fault
conditions and safe motor operation.
It is designed for use in motor starter combinations with
SIRIUS contactors (such as 3RT2 series), forming a complete protection
system in industrial control panels.
Key Features
|
Parameter |
Specification |
|
Product Model |
3RV2031-4XA10 |
|
Brand |
Siemens |
|
Series |
SIRIUS 3RV2 |
|
Type |
Motor Protection Circuit Breaker (MPCB) |
|
Frame Size |
S2 |
|
Current Setting Range |
49 – 59 A |
|
Short-Circuit Release |
845 A |
|
Tripping Class |
Class 10 |
|
Protection Functions |
Overload, short-circuit, phase failure |
|
Mounting Type |
DIN rail / panel mounting |
|
Rated Voltage |
Up to 690 V AC |
|
Frequency |
50/60 Hz |
|
Coordination Type |
Motor starter combination (with contactor) |
|
Standards |
IEC 60947-4-1 |
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