A rapid means of disconnecting batteries or other supplies in the event of serious electrical faults. The switches are primarily intended for use with battery-powered vehicles but are also suitable for static systems. All types can safely interrupt full load battery currents during emergencies. This is a manually operated device with a simple over-center mechanism that provides a "snap action" for both opening and closing the main contacts. Product Type: Switch Contact Type: Normally Open Front Ring Material: Resin Rated Insulation Voltage: 220V Contact Rated Working Current: 250A Working Voltage: 12V Mode of Operation: Emergency Panel Thickness: 2mm Color: Red + Black Material: Resin + Copper Package Contents: 1 x Switch Note: Light and different display settings may cause the color of the item in the picture to vary slightly from the actual product. Measurement may vary by +/- 1-3cm.