[Lifetime Warranty] 12VDC Max Transient 300A Solenoid Relay 4-Terminal
12V 4-terminal solenoid relay with metal housing and mounting bracket.
Technical diagram showing dimensions for 12VDC 300A solenoid relay with 4 terminals.
Infographic showing construction details of a 12V 300A solenoid relay including body shell, terminals, and copper coil.
Four views of a 12VDC 300A 4-terminal solenoid relay showing mounting brackets and copper contact studs.
Infographic showing 12VDC solenoid relay applications for RVs, marine boats, golf carts, and winches.
Wiring diagram for 12VDC 300A 4-terminal solenoid relay showing ON and OFF states.
12VDC 300A 4-terminal solenoid relay shown in a lifestyle graphic with a father and son working on a car engine.
12V 4-terminal solenoid relay with metal housing and mounting bracket.
Technical diagram showing dimensions for 12VDC 300A solenoid relay with 4 terminals.
Infographic showing construction details of a 12V 300A solenoid relay including body shell, terminals, and copper coil.
Four views of a 12VDC 300A 4-terminal solenoid relay showing mounting brackets and copper contact studs.
Infographic showing 12VDC solenoid relay applications for RVs, marine boats, golf carts, and winches.
Wiring diagram for 12VDC 300A 4-terminal solenoid relay showing ON and OFF states.
12VDC 300A 4-terminal solenoid relay shown in a lifestyle graphic with a father and son working on a car engine.
Lifetime Warranty

[Lifetime Warranty] 12VDC Max Transient 300A Solenoid Relay 4-Terminal

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12VDC Max Transient 300A Solenoid Relay 4-Terminal

Key Features

  • Voltage: 12VDC
  • Current Rating (Transient): 300A Maximum
  • Current Rating (Continuous): 150A Recommended
  • Terminal Configuration: 4-Terminal, SPST
  • Coil Resistance: 14Ω
  • Coil Power: 10.2W
  • Construction: Nickel-plated housing and high-temperature copper coil windings.

Replaces / Cross-Reference Part Numbers

  • 70-111224
  • 3635820
  • 1114208
  • 1114218
  • 1114223
  • 1114534
  • 1114547

Compatibility & Fitment

  • Designed for high-amperage 12VDC switching applications.
  • Commonly used in golf carts, including EZGO Marathon (1979-1994).
  • Suitable for automotive, marine, and industrial winch control systems.
  • Functions as a battery isolator or high-current power relay for campers and utility vehicles.

When to Replace

  • Vehicle or equipment will not start or engage.
  • Audible clicking from the solenoid without motor activation.
  • Intermittent operation of the connected system (e.g., starter, winch).
  • Solenoid fails to disengage, causing the motor to continue running.
  • Visible signs of corrosion, arcing, or physical damage to terminals or housing.

Installation Tips

  • Disconnect the negative battery cable before starting work.
  • Ensure all electrical contact points and cable ends are clean and free of corrosion.
  • Mount the solenoid in a location away from direct water exposure and excessive heat.
  • Securely tighten all nuts on the terminals, but do not overtighten to prevent damage to the studs.
  • Verify correct wiring for both the high-current posts and the smaller activation terminals.
Product image 1
Product image 2
  • Fixing Symptoms

    Fixing Symptoms

    Hard to start the engine | Clicking sound but no cranking | Slow or weak cranking of the starter motor | Intermittent operation, etc
  • Premium Quality

    Premium Quality

    Made of high-grade materials and fine craftsmanship to provide exceptional durability for long-time use
  • Saving Solution

    Saving Solution

    Enjoy our great-value package with all you need to optimize electrical systems - BlueStars brings DIY solutions to help you deal with any trouble
  • Simple Installation

    Simple Installation

    Please do not remove the inner nuts. When screwing on the outer nuts, use a wrench to hold the inner nut to keep it tight.
WIDE APPLICATION

WIDE APPLICATION

Widely used for automotive applications
WORK LIKE A CHARM

WORK LIKE A CHARM

Nickel-Plating outer shell and 180°C Copper inner coil ensure your solenoid operates safely in any harsh environment with moisture, dust, dirt, water, sand, oil, chemicals,...
EXCEPTIONAL PARTS, REMARKABLE JOURNEY

EXCEPTIONAL PARTS, REMARKABLE JOURNEY

Enjoy your seamless journey with the support of our replacement parts.
Brand Model Number
Replaces OE part numbers #70-111224, 3635820, 1114208, 1114218, 1114223, 1114534, 1114547
Voltage 12VDC
Resistance 14Ω
Capacity 10.2W

FAQ

A 12VDC 4-terminal solenoid relay is commonly used in 12-volt electrical systems on equipment such as lawn and garden machines, utility vehicles, small engine equipment, marine applications, battery disconnect circuits, winches, and starter or accessory control systems. Compatibility depends on more than voltage alone, so you should verify the terminal layout, mounting style, duty cycle, and required current capacity before ordering.
The 300A transient rating means the relay can handle a short-duration surge of current, such as the brief inrush load that happens when a motor or solenoid first energizes. It does not automatically mean the relay is intended to carry 300 amps continuously. For replacement matching, make sure your application's normal operating current and on-time duty match the relay's intended use.
Check four things: 1) the system voltage must be 12VDC, 2) the relay must use the same 4-terminal configuration, 3) the large and small terminals must match your existing wiring function, and 4) the current requirements of your equipment must not exceed the relay's rating. It is also important to compare the mounting bracket or base style so it physically installs in the same location.
Typical symptoms include clicking without power passing through, no click at all when the control circuit is energized, intermittent operation, voltage drop across the main terminals, heat damage at the posts, or equipment that only works when the relay is bypassed. Corroded terminals, weak battery voltage, bad grounds, and damaged control wiring can cause similar symptoms, so those should be checked before replacing the relay.
Disconnect power first, then inspect the battery condition, cable ends, grounds, fuse protection, and the control wire feeding the small terminals. If the original relay failed from overheating, also check for loose cable connections, undersized wiring, excessive current draw from the load, or moisture intrusion. Replacing a relay without correcting those issues can cause the new one to fail early.
In many applications it is a straightforward repair that takes about 15 to 30 minutes. Basic tools usually include wrenches or a socket set, possibly a screwdriver, and a multimeter for confirmation testing. Labeling the wires before removal is strongly recommended so the large load terminals and smaller control terminals are reconnected correctly.