What this breaker carries — and what it doesn't
The 100 kA breaking capacity at 400 V and at 690 V tells you it can sit on a high-fault panel bus without cascading upstream, but the 0 kW rating at 230 V and 0.32 A at 480 V and 600 V are the actual motor-protection trip settings — this is a low-current thermal-magnetic breaker for fractional-horsepower or small-pump loads, not a 100 A feeder.
DIN-rail fit and panel clearance
That means you can pack it tight front-to-back in a shallow enclosure, but need breathing room above and below for arc-chamber venting and wiring access.
What the 100 kA rating means for coordination
The 100 kA breaking capacity at 240 V, 400 V, 500 V, and 690 V AC means this breaker can interrupt a fault up to 100,000 amps without welding or rupturing — that's a high-fault rating for a Size S00 frame. The 0.32 A trip at 480 V and 600 V is the actual overload setting — the 100 kA is the short-circuit withstand, not the running current.