Mounts on a backplate, accepts front-front wiring, and occupies a 140 mm wide footprint with 35 mm connection pitch. IK07 impact rating means it survives a 2 J hammer strike during installation.
Durability and application context
Rated for 20,000 mechanical cycles and 20,000 electrical cycles at 440 V In/2 — enough for frequent switching in distribution panels feeding motor control centres or lighting circuits. At full rated current (440 V In) it still delivers 10,000 electrical cycles, which aligns with a 10–15 year service life in a typical industrial environment. The TM-D trip unit is field-replaceable, so you can swap the thermal-magnetic element without pulling the breaker from the backplate.