GHG4181101R0001 Non-illuminated Red Mushroom, SPDT, 30mm. Panel mounting for use in Zone 1 hazardous areas. Maximum panel thickness is 5mm and the mounting hole required is 30.5mm diameter.,Front element is fixed to panel using the clamp nut. Body/contact block components fitted from rear utilising the built in quick action bayonet feature. The switches are rated at 500V/16A and the signal lamps have a rated voltage of 24Vdc.Housings are made from EN polyamide and glass reinforced polyester. Operating temperature: -55 to +50°C.