Motor protection circuit breaker for the panel builder
Phase failure detection is included, which means the breaker will trip on loss of a phase — a common cause of motor burnout in three-phase systems.
The footprint is 45 mm wide by 90 mm high by 75 mm deep, so it occupies a single 45 mm module on the rail. Clearance requirements: 20 mm upwards, 20 mm downwards, 9 mm at the side, and zero forwards or backwards. Any mounting position is permitted, which simplifies layout in crowded enclosures.
Trip class and switching duty
Maximum switching frequency is 15 operations per hour at AC-3 duty, so it is sized for motor starting, not frequent jogging or inching. The rated insulation voltage spans 20 to 690 V, covering most low-voltage motor circuits.