Class 10 trip and what it means on the line
The 3RU2116-1JC0-ZX95: If you're protecting a pump or fan motor that hits full speed in a couple seconds, Class 10 is the right call; a Class 20 would let a stalled rotor cook longer before opening. The thermal bimetal release tracks the motor's I²t heating, and the temperature compensation keeps the trip curve accurate from -40 to +60 °C ambient — so it works in an unheated shed or next to a hot conveyor drive without drifting.
Panel fit — mounts on the contactor, not the rail
Size S00 frame mounts directly onto the contactor via the fastening method — no DIN rail needed. That saves a rail slot and keeps the power stack compact. The screwdriver slot is 3.0 x 0.5 mm, so a standard #1 Pozidriv or flat-blade works.
Auxiliary contact — the trip message signal
The 'ZX95' suffix adds an integrated auxiliary contact that changes state on a trip and sends a message — handy for a PLC input or a panel lamp so you know the overload popped without walking the line. Match your control voltage to the table to avoid contact welding on inductive loads.
Lifecycle and compliance — active, RoHS, no surprises
The operating frequency is 50 to 60 Hz, so it works on both 50 Hz European and 60 Hz North American supplies.