It's rated for 40 A continuous current and trips on AC fault currents at 300 mA, with a supply voltage of 230/400 V AC. For pulsating DC or smooth DC fault currents, you'd need a type A or type B unit. The 300 mA trip threshold is typical for fire protection or high-leakage industrial circuits rather than personal shock protection (which usually calls for 30 mA).
The surge current resistance is 3 kA, so it can handle the inrush from a downstream short circuit without nuisance tripping or damage.
Terminal & Wiring
Screw-type terminals accept solid conductors from 0.75 to 35 mm² and stranded from 0.75 to 25 mm². Tightening torque is 2.5 to 3 N·m — a standard screwdriver setting, no special tooling needed. The supply cord connects at the top, above the miniature circuit breaker. Installation depth is 70 mm, matching the 5SL4 breaker it pairs with. That's a common depth for DIN-rail residential and light commercial panels; no extra enclosure depth required.
The unit is silicon-free.