Transformer-protection breaker, Size S00
Any mounting position works. That 45 mm width is the critical panel-density number: it occupies one standard 45 mm module slot, so a 12-way panel row holds 12 of these breakers.
Accepts 2x (0.75 to 2.5 mm²) solid or stranded, or 2x 4 mm². Screwdriver shaft diameter 5 to 6 mm, Pozidriv size 2 tip. Main contact screws are M3. No ground-fault detection built in; phase-failure detection is included.
Environmental and ratings
Rated voltage 20 to 690 V. Maximum switching frequency in AC-3 duty is 15 operations per hour. The 100 kA breaking capacity repeats across 240 V, 400 V, 500 V, and 690 V AC — so it holds its interrupting rating across the full low-voltage range, not just at one voltage point.
