It is rated for AC-3 utilisation category (squirrel-cage motor switching) and carries a thermal protection adjustment range of 1 to 1.6 A, which sets the overload relay trip point for the connected motor. The control circuit is 115 V AC 50/60 Hz, so the coil pulls in at that voltage — standard for North American and some European panel voltages. The magnetic tripping current is fixed at 22.5 A, meaning the instantaneous magnetic trip operates above that level for short-circuit protection, while the thermal element handles the overload curve.
Motor power coverage and breaking capacity
This starter covers motor power ratings from 0.37 kW up to 0.75 kW depending on supply voltage — 0.37 kW at 400/415 V and 440 V, 0.55 kW at 400/415 V and 440 V, and 0.37/0.55/0.75 kW at 500 V, all at 50/60 Hz. The 1-1.6 A thermal adjustment range maps to small motors in that power band; if your motor draws more than 1.6 A FLA, this is the wrong thermal block. Breaking capacity is 50 kA at 400/415 V, 440 V, and 500 V AC, conforming to IEC 60947-4-1. Coordination is Type 1, so the starter may need contact replacement after a fault but the breaker clears it.
The 45 mm width is three module spaces (each 15 mm), typical for a 3-pole motor starter with integrated reversing contactor. Depth of 87 mm means it will clear most shallow enclosures, but check your door clearance if using a deep rotary handle.