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Siemens 3RB1257-0KM20 — Overload Relays

3RB1257-0KM20

MPN3RB1257-0KM20

DISCONTINUED PRODUCT OVERLOAD RELAY 125...500 A FOR FULL MOTOR PROTECTION SIZE S10/S12, CLASS 5...30 F. CONT. MOUNT./ INDIV. MOUNT. MAIN CIRCUIT: BUSBAR CONN. AUX. CIRCUIT: SCREW TERMINAL MANUAL-AUTOMATIC-REMOTE RESET INT. GROUND FAULT DETECTION MONOSTABLE OUTPUTS GROUND FAULT SIGNALING AC 220...240 V, 50/60 HZ

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3RB1257-0KM20 — Mechanical
ParameterValue
Weight2.54 kgs
MPN
3RB1257-0KM20