Rated for 690 V at 50/60 Hz, this 3-pole breaker uses a thermal overload release and a magnetic short-circuit trip.
The S00 frame size keeps the footprint compact: 45 mm wide, 97 mm tall, 96 mm deep. That 96 mm depth means it sits flush with typical S00 contactors in a motor-starter stack. Screw-type terminals on top and bottom accept 2×(0.75–2.5 mm²) solid/stranded or 2×4 mm², with a tightening torque of 0.8–1.2 N·m. AWG equivalents: 2×(18–12) solid, 2×(20–16) stranded. That covers most control-circuit wiring; for larger transformer secondaries, you'd step up to the S0 frame.
Compliance documentation is in order: RoHS compliance date of May 1, 2012 (per EU Directive 2011/65/EU), and the part carries the usual SIRIUS approvals (UL, CSA, CE) for panel builders shipping into North America or Europe.