12V 200A Heavy Duty Battery Isolator Relay, 4 Pin Dual Battery Switch for Car Truck Marine, Universal Start Relay with High Current Capacity

This heavy-duty 12V 200A battery isolator relay is an essential component for vehicles requiring reliable dual battery management. Designed to handle high current loads, this universal 4-pin relay ensures your primary battery remains protected while powering auxiliary systems or starting your engine. The robust construction features copper terminals and a durable housing that withstands the demanding conditions of automotive, truck, RV, and marine applications. With its 200-amp capacity, this relay efficiently manages power distribution between batteries, preventing drain on your main battery when the engine is off. The compact design measures approximately 2 inches in length and 1.2 inches in width, making it easy to install in confined engine compartments or electrical panels. The clearly marked pin configuration (30, 86, 85, 87) simplifies wiring for both professional mechanics and DIY enthusiasts. Whether you're upgrading your vehicle's electrical system, installing aftermarket accessories, or building a dual battery setup for off-road adventures, this reliable switch relay delivers consistent performance you can count on.

• HIGH CURRENT CAPACITY: 200A heavy-duty relay designed for reliable power transfer and starting performance in automotive, marine, and truck applications
• DUAL BATTERY PROTECTION: Isolator function prevents your main battery from being drained by auxiliary systems, ensuring your vehicle always starts
• UNIVERSAL 12V COMPATIBILITY: Works with a wide range of 12-volt vehicles including cars, trucks, boats, RVs, and other automotive equipment
• DURABLE 4-PIN DESIGN: Rugged construction with copper terminals and stable relay mechanism ensures long-lasting operation under heavy electrical loads
• COMPACT INSTALLATION: Lightweight 0.22 lbs design with mounting bracket allows for easy installation in tight engine compartments and electrical systems