It combines a thermal overload release (Class 10) with a magnetic short-circuit trip in a single 45 mm-wide package. Rated at 0.2 A in AC-3 duty at 400 V, this breaker is sized for small motor loads — fractional-horsepower pumps, fans, or conveyor drives where the full-load current sits right at that 0.2 A mark.
The 45 mm width (one standard modular unit) and 96 mm depth fit neatly into a compact control panel — no extra space needed for side-by-side mounting as long as you respect the 30 mm side clearance to adjacent metalwork. Top and bottom entry for the main circuit conductors keeps wiring straight. Screw-type terminals accept up to 2× 4 mm² solid or stranded, or 2× 2.5 mm² with ferrule. Torque to 0.8–1.2 N·m — nothing exotic, just a standard screwdriver.
RoHS compliance date is May 1, 2012, and the part carries the usual Siemens industrial approvals.
If your motor nameplate says 0.18 A FLA, this breaker is the right call. The 15 operations per hour maximum at AC-3 keeps thermal buildup in check for normal start-stop cycles. Short-circuit breaking is handled by the magnetic trip, and the device is rated for a 6 kV surge voltage (impulse withstand). That 6 kV figure covers the transient environment of a standard industrial panel fed from a 400 V distribution transformer. Operating temperature range of -20 to +60 °C and 95% humidity tolerance mean it lives comfortably in a non-conditioned cabinet on the plant floor. Shock-rated to 25 g for 11 ms — tough enough for machine-mounted applications near presses or stamping equipment.