CLASS 10 trip coordination
The 3RU2136-4FB1: This sets the coordination window with the upstream MCCB — a Type 1 or Type 2 coordination study needs this number to verify the breaker clears before the relay damage curve is exceeded. The relay's thermal memory prevents immediate restart after a trip, protecting the motor winding from repeated locked-rotor events.
S2 frame mounting and wiring
S2 frame size, 117 mm depth, 55 mm width, 105 mm height — mounts standalone on the panel backplate or directly to the matching SIRIUS contactor. Any mounting position is allowed, and temperature compensation is active from -40 °C to +60 °C, so the trip accuracy holds regardless of orientation or ambient conditions inside the enclosure.
Auxiliary contact and signalling
This contact signals the PLC or HMI that the relay has operated, so the control logic can sequence a restart or trigger an alarm without waiting for a manual reset.
The relay is RoHS compliant per the substance prohibitance date of 10/15/2014. Power dissipation is 5.2 W per pole at rated current — account for this in the enclosure thermal budget, especially in a multi-relay panel with restricted airflow.