Siemens 3RV1011-0FA10 Miniature Circuit Breaker

Siemens 3RV1011-0FA10 is a SIRIUS motor-protection circuit breaker in the S00 size of the 3RV1 family, designed to guard three-phase motors in 690 V AC control circuits by delivering integrated overload protection and short-circuit interruption in a compact DIN-rail mountable package. The unit provides an overload release (A-Release) adjustable from 0.35 to 0.5 A and a higher N-Release of 6.5 A, enabling precise motor protection across startup and running conditions; its screw-terminal connections support secure wiring in panel assemblies. With front IP20 protection, the device is built for environments where relatively clean, dry indoor conditions prevail and is commonly installed on DIN rails in control panels alongside other Sirius starters. As a fast-acting three-pole MSP, it is intended to operate with Siemens Sirius 3RV1 starters to protect motors from overload and provide safe disconnection during faults, reducing wiring complexity and space requirements compared with discrete relays and fuses. The 3RV1011-0FA10 is part of Siemens’ Sirius motor-protection lineup, offering a compact, standardized solution for motor protection in automation projects that require dependable 690 V operation and integrated protective functions in a single unit.