Contour Lock system with removable plates for connection from all sides. This allows the switch to be a stand alone unit or locked together with other switches. The control knob can not be removed whilst in an ON or OFF position, however it can be removed by switching to an anti-clockwise 45° position. Suitable for surface or recess mounting by cutting a 52mm diameter hole. Specification: Material Description - Impact resistant plastic, Termination Stud Size - 2 x 10 mm, IP56, Max. Load Continuous - Continuous 275 A, Max. Load Intermittent - 455 Amps (5 minutes), Max. Load Cranking - 1250 A (10 seconds), Max. Voltage - 48V DC.