LDMINDA 12V 300A Solenoid Relay Nickel-Plated — Continuous-Duty 4-Terminal with Resistor & Diode

LDMINDA’s 12VDC continuous-duty solenoid relay with resistor and diode is a heavy-duty four-terminal battery isolation switch engineered for golf carts, winches, marine and industrial electrical systems.

This nickel-plated, normally-open electromagnetic relay delivers a compact, corrosion-resistant switching solution designed to handle high transient loads while offering reliable control for battery circuits. Built with a 14Ω coil and dual copper contact points, the unit is optimized for intermittent high-current events such as winch pulls, starter circuits and accessory isolation on vehicles and boats. The assembly includes a built-in resistor and diode to protect the coil and reduce electrical noise when switching inductive loads.

How much current can the solenoid handle and what are the operating limits?

The LDMINDA solenoid supports transient currents up to 300 A but is rated for continuous operation at lower currents for safety and longevity. For long-running loads it is recommended to keep continuous current below 150 A and follow duty-cycle guidance to prevent overheating.

• Maximum transient flash current: 300 A
• Recommended continuous current: under 150 A
• Typical working current example: 80 A with duty-cycle breaks
• For extended continuous high loads, select a solenoid specified for sustained duty

What are the electrical and mechanical specifications I should know?

This relay operates at 12 VDC with a coil resistance of 14 Ω and a coil power of about 10.2 W. It is a single-pole single-throw (SPST) normally-open device with two copper contact points and four terminals for battery isolation and accessory switching.

• Voltage: 12 VDC; Coil resistance: 14 Ω; Coil power: 10.2 W
• Contacts: Normally open (NO) with two copper contact points
• Mounting: straight bracket with holes spaced 2-13/64" center (5/16 x 19/32 holes)
• Finish: nickel-plated shell for corrosion resistance in varied environments

Which applications and replacement part numbers are compatible?

This LDMINDA unit is intended for use where robust battery isolation and switching are required—common in marine, off-road, winch and industrial equipment. It’s also manufactured to substitute several OEM numbers so you can replace older or worn solenoids without custom wiring.

• Common uses: golf carts, winches, boats, military and hydraulic systems, factory machinery
• Replaces part numbers: 70-111224, 3635820, 1114208, 1114218, 1114223, 1114534, 1114547
• Package: 1 × 12V 4-terminal battery isolation solenoid with resistor and diode

Who is this for? Mechanics, fleet managers, boat owners, DIYers and OEM technicians who need a compact, corrosion-resistant 12 V battery isolation relay that tolerates high transient currents will find this LDMINDA solenoid suitable. Choose it when you require a nickel-plated solenoid with dual copper contacts and an included resistor/diode for cleaner switching of inductive loads. If your application regularly draws sustained currents near or above the recommended continuous rating, consider a solenoid model specified for extended high-current duty to ensure safe reliable performance.