Heavy duty 'Make & Break' relay suitable suitable for On/Off applications where the ability to switch a higher current from a low power source is needed. Normally Open configuration, the relay has an open circuit at rest. The integrated fixed bracket allows easy mounting. Can also be used as a split charging relay, simply wire the coil to an ignition feed or to a feed that becomes live when the alternator is charging. M6 studs are suitable for the switched high current circuit and are supplied with lock washers and nuts Supplied Individually Voltage Rating: 12v Current Rating: 200A Max Terminal Configuration: None Standard Number Of Terminals: 4 Terminal Size: 2 x 6.3mm Male Lucar Terminals (Pins 85 & 86) - 2 x M6 Studs (Pins 30 & 87) Bracket Type: Fixed Mounting Hole Size: 6mm Dimensions LxWxH (Including Terminals): 45x45x60 mm color: Black Material: ABS+Metal Package Contents: 1X 12V 200A Normally Open 4 Pin Relay 1X User manual Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.