What it is and where it fits
The Siemens 3RV5902-1DP0 is a SIRIUS shunt release — a remote-trip accessory for the 3RV2 motor circuit breaker family. It snaps onto the breaker side via the standard DIN-rail mount, so no panel rework or separate bracket is needed. The screw-type auxiliary/control terminals accept the same wiring practice as the main breaker terminals. The control supply is AC only, 210-240 V at 50 or 60 Hz, with a 50-60 Hz frequency tolerance. The rated insulation voltage is 690 V, matching the breaker's main circuit rating. The shunt release clears the breaker in 20 ms maximum — fast enough for most emergency-stop and remote-trip circuits. It fits the S00, S0, S2, and S3 frame sizes — that covers the entire 3RV2 line from the smallest 0.16 A up to 100 A motor-protective breakers. One part number for the whole panel saves stocking complexity.
Mounting and integration
Snap-on mounting onto the breaker side — no tools, no DIN-rail space consumed beyond the breaker's own footprint. The 19 mm width matches the breaker's module width, so it doesn't crowd adjacent components. Depth is 68 mm, height 90 mm. Screw-type terminals for the control wiring. The degree of pollution 3 rating means it's suitable for industrial environments with conductive dust or occasional condensation — typical for control panels in production areas.