Transformer-Protection Circuit Breaker, 0.4 A
The 45 mm width (one standard module) and 97 x 96 mm height/depth fit a compact panel layout. Screw-type terminals on the main circuit accept 2x (1 to 2.5 mm²) solid or stranded, or 2x (2.5 to 6 mm²) — plenty of wire range for a 0.4 A branch. The auxiliary switch is present but ships with zero factory-fitted auxiliary contacts; if you need signaling, you add them separately.
Electrical & Environmental Ratings
Breaking capacity holds at 100 kA across the full voltage range: 240 V, 400 V, 500 V, and 690 V AC — no derating curve to worry about in standard industrial distribution. Surge voltage resistance is rated at 6 kV, which covers the IEC 60947-2 impulse withstand for basic insulation coordination in a 400 V system. The shock resistance of 25g / 11 ms means it survives typical industrial vibration and handling drops without nuisance tripping. Any mounting position is permitted, which simplifies panel layout. Mechanical endurance of the main contacts is 100,000 operations typical, and at AC-3 duty the maximum switching frequency is 15 cycles per hour.