Motor protection circuit breaker, size S00, 0.5 A, CLASS 10
The 0.5 A rating places this at the low end of the SIRIUS motor protection range — it's sized for fractional-horsepower motors, small pumps, fans, or conveyor drives drawing under 0.5 A full-load. The thermal overload release is adjustable (0.35...0.5 A per the description), so you set it to match the motor nameplate FLA. The magnetic short-circuit release is fixed at 6.5 A, which is about 13x the maximum thermal setting — that's a deliberate gap to ride through motor start without tripping on inrush. Spring-type terminals on the main circuit accept 0.5–4 mm² solid or stranded, and the integrated transverse auxiliary switches (1 NO + 1 NC) give you a status feedback signal without needing a separate add-on block. That saves a DIN rail slot and a wiring step.
No side clearance needed when ganged with other S00 devices; the manufacturer specifies 0 mm spacing for side-by-side mounting. Spring-cage terminals on this variant (the -ZW96 suffix indicates spring-type) mean no screw torque to verify — just strip to 8 mm and push in. That's a time-saver on a panel build with dozens of these breakers.
RoHS compliance date is noted as October 1, 2009, which aligns with the EU RoHS directive. The part carries the standard Siemens SIRIUS documentation package — CE, UL/CSA pending confirmation on the specific variant, but the base design is UL-recognized.