The 3RU2126-1KB0: Temperature compensation from -40 to +60 °C means the trip point stays accurate whether you're in a cold plant or a hot pump house.
Fastens directly to the contactor via screw terminals — no separate base needed. Main circuit terminals accept 2x (0.5 to 2.5 mm²) solid or stranded, with Pozidriv PZ 2 screwdriver tip. Integrated auxiliary switch gives a clean tripped signal for the message line.
Compliance
The part carries a substance prohibitance date of 10/01/2009, indicating RoHS and REACH compliance. Other certifications are managed through the Siemens SIRIUS line.