That makes it the right part for downstream protection of motor starters or control transformers where a blown fuse upstream would otherwise leave a single-phased load running undetected. Size S00 frame (45 mm wide, 90 mm tall, 75 mm deep) mounts on 35 mm DIN rail per DIN EN 60715 via screw or snap-on. Clearance: 20 mm above and below, 9 mm to the side, zero forward or backward (–).
Breaking capacity — what it handles
Rated breaking capacity hits 100 kA at 240 V, 400 V, 500 V, and 690 V AC. That is a high-fault rating for a Size S00 breaker — it interrupts faults up to 100 kA without cascading upstream, which simplifies coordination in panels fed from a transformer with high short-circuit current.
