It is rated 4 A at AC-3 duty at 400 V, with a Trip Class 10 characteristic — meaning it will trip within 10 seconds at 7.2× the thermal setting, fast enough to protect standard induction motors during a locked-rotor start.
DIN-rail fit and wiring
The S0 footprint is 45 mm wide by 119 mm tall, with a depth of 97 mm — a tight fit for a 4-pole device in a crowded enclosure. Clearance requirements: 50 mm above and below, 30 mm to the sides, zero forward or backward.
Breaking capacity and duty ratings
That 100 kA figure at 400 V means the breaker can be used on a transformer-fed panel with a high prospective fault current — no need for a current-limiting upstream fuse for SCCR compliance. The AC-3 rating of 4 A at 400 V corresponds to switching a motor load of approximately 0.8 kW at 230 V. The breaker also carries a maximum operating voltage of 690 V AC-3.