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Small silver solenoid relay with four terminal studs and mounting bracket

12V 300A 4-Terminal Solenoid Relay

SKU CH-R8GM-QYK3Z

A 12 VDC continuous-duty solenoid relay rated for 300 A transient current with four terminals and 180 copper coil wire for marine, winch, golf cart and RV applications

  • FeaturesNormally Open, Copper, 12 volts_of_direct_current, 300 amps,
  • Height7.0104 L x 7.1882 W x 8.9916 H centimeters
  • Width7.0104 L x 7.1882 W x 8.9916 H centimeters
  • Length7.0104 L x 7.1882 W x 8.9916 H centimeters
  • Handles peak loads up to 300A for winch and starter circuits
  • Continuous duty rated at 150A for sustained accessory power
  • 12VDC coil draws only 10.2W, reducing battery drain
  • Potted coil interior seals out moisture, dust and vibration
  • Replaces multiple OEM part numbers across marine, RV and golf-cart platforms

12 VDC 300 A Solenoid Relay

This 12 VDC solenoid relay handles continuous currents up to 150 A and transient peaks of 300 A. It suits automotive, marine, golf cart and winch circuits where a normally open contact is required. The four-terminal design with 5/16"-24 studs fits existing brackets on EZGO Marathon models from 1979 to 1994 and other listed replacements.

Continuous and Peak Current Capacity

The coil draws 10.2 W at 14 Ω resistance and is rated for continuous duty below 150 A. Peak transient current reaches 300 A for short durations, but sustained operation above the continuous rating will cause overheating. The supplier specifies a cycle of five seconds on followed by fifty minutes off to avoid thermal damage.

Thermal Behaviour and Power Draw

The potted coil interior resists dust, dirt and moisture, helping the relay run cooler in harsh environments. In normal use the unit dissipates 10.2 W and remains within safe temperature limits when the duty cycle is observed. Continuous operation without the prescribed cool-down period leads to excessive heat, short-circuit risk or fire.

Highlights

  • Handles peak loads up to 300A for winch and starter circuits
  • Continuous duty rated at 150A for sustained accessory power
  • 12VDC coil draws only 10.2W, reducing battery drain
  • Potted coil interior seals out moisture, dust and vibration
  • Replaces multiple OEM part numbers across marine, RV and golf-cart platforms

Specifications

BrandaFe Power
FeaturesNormally Open, Copper, 12 volts_of_direct_current, 300 amps, Surface Mount, Screw, Automatic, 10.2 watts, Silver
Height7.0104 L x 7.1882 W x 8.9916 H centimeters
Width7.0104 L x 7.1882 W x 8.9916 H centimeters
Length7.0104 L x 7.1882 W x 8.9916 H centimeters

Questions about this item

Will this 12 VDC 300 A solenoid relay work with the existing 5/16"-24 stud wiring on my EZGO Marathon 1979-1994?

Yes, the relay uses standard and long 5/16"-24 contact studs that match the original wiring on EZGO Marathon models from 1979 to 1994.

How can I verify the relay is operating correctly after installation?

With the key on, measure voltage across the two large studs; it should read near zero when the coil is energised, confirming the normally open contacts have closed.

What comes in the box and what must I supply separately?

The box contains the 4-terminal solenoid relay with mounting bracket; you must supply 12 VDC power leads, ring terminals for the 5/16"-24 studs, and mounting hardware for the 5/16" x 19/32" bracket holes.

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