The Siemens 3RU2116-1GC0-ZX95 is a SIRIUS S00 thermal overload relay, the variant with a "Tripped" message flag for visual indication of the relay state. It's the part you spec when you need motor overload protection in a compact S00 frame, Class 10 trip curve for standard motor starts, and spring-loaded terminals for tool-less wiring.
What the ratings mean for fit
Class 10 trip means the relay will open within 10 seconds at 7.2× the set current — standard for most induction motor starts, but not for heavy inertia loads that need a Class 20 or 30. The 690 V rated value covers 400 V and 480 V systems with headroom; the power ratings at those voltages (2.2 kW at 400 V, 6.3 A at 480 V) tell you the motor size it protects in those line conditions. The auxiliary switch is integrated, so you don't need a separate add-on block for the trip signal — the "Tripped" message is the NC contact that opens on overload. That saves a DIN slot and one wiring step per starter.
Mounting and wiring
Mounts directly onto the contactor — no separate DIN-rail clip needed, though the S00 frame itself can be DIN-rail mounted if you're building a standalone overload block. The spring-loaded terminals accept 2× (0.5 to 2.5 mm²) solid or stranded, so you land two conductors per pole without ferrules. Dimensions are 70 mm deep, 45 mm wide, 87 mm high — fits the standard S00 panel footprint.