It combines a thermal-magnetic overload relay and a magnetic short-circuit trip in one 45 mm wide package, rated for 5 hp at 460/480 V.
Breaking capacity — the real-world number
At 690 V the breaking capacity drops to 4 kA — still adequate for most 690 V motor circuits with a properly sized upstream fuse or breaker.
Clearance requirements: 50 mm upwards, 50 mm downwards, 30 mm to the side, zero forwards or backwards. That 50 mm vertical gap is for arc venting — do not crowd the vents against a panel wall or cable duct.
