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The Siemens 3RV20210JA10 is a 3-pole motor protection circuit breaker from the MSP series, size S0. It is designed for overload and short-circuit protection of three-phase motors. The thermal overload release is adjustable from 0.7 to 1A, with a trip class rating of CLASS 10. Phase failure detection is included, while ground fault detection is not provided. The operating voltage range is 20 to 690 V AC at 50/60 Hz, with a rated insulation voltage of 690 V and surge voltage resistance of 6 kV. The breaking capacity is consistently 100 kA for both ultimate (Icu) and operating (Ics) short-circuit currents at all AC voltages from 240 V to 690 V. Power loss is 7.25 W total (2.4 W per pole) in hot operating state. The mechanical and electrical endurance is 100,000 switching cycles. The device can withstand shock up to 25g/11 ms per IEC 60068-2-27. Ambient operating temperature ranges from -20 to +60 °C, with storage and transport ranges from -50 to +80 °C. Relative humidity during operation is 10 to 95%, and maximum installation altitude is 2000 m. The circuit breaker mounts on DIN rail and has a rotary actuator. It holds approvals from ATEX, CCC, CSA, EAC, IECEx, and UL, with ATEX protection type Ex II (2) GD.
The operating voltage is 20 to 690 V AC.
-20 to +60 °C during operation.
100 kA for both ultimate and operating short-circuit currents at AC voltages from 240 V to 690 V.
Yes, phase failure detection is included.
ATEX protection type Ex II (2) GD per certificate DMT 02 ATEX F 001.
CLASS 10.
It is mounted on a DIN rail.