The Siemens 3RB1016-1RB0 is a solid-state overload relay sized for the S00 contactor frame, covering a motor FLA range of 0.1...0.4 A with a Class 10 trip curve. The solid-state sensing avoids the heating drift and ambient-temperature sensitivity of bimetal relays, so the trip point stays consistent across the panel's internal temperature swings.
This relay mounts directly onto a S00 contactor, saving DIN-rail space and reducing interconnecting wiring. The screw terminals accept the motor leads and control circuit, and the manual-automatic reset selector lets you choose between a latching trip (manual reset after a fault) or automatic reset once the overload clears — a useful choice for unattended or remote installations where a manual reset walk is impractical.