EARU 12V Fuse Block Waterproof Relay Box Design and Specifications
The EARU 12V Fuse Block delivers waterproof protection rated for harsh automotive environments where moisture and vibration threaten electrical integrity. Its 11-way configuration accommodates standard ATO fuse slots alongside the 6-slot relay panel, giving you dedicated circuits for lights, pumps, fans, and accessory loads without daisy-chaining through a single relay. Heavy-duty terminals accept 12-gauge wire and lock securely into the die-cast housing, eliminating the loose connections that cause intermittent failures. The weatherproof seal prevents corrosion and salt spray intrusion, extending service life in trucks, trailers, and marine vessels where salt air accelerates degradation. Universal mounting allows installation in engine bays, under-dash cavities, or auxiliary battery boxes with minimal fabrication.
Why Electricians and Vehicle Builders Choose This Fuse Relay System
Professional installers trust this waterproof relay box because it centralizes circuit protection and control in a single compact unit rather than scattering relays across the vehicle. The 6-slot relay panel lets you switch high-current loads like winches, compressors, and heater elements independently without overtaxing the vehicle’s factory harness. DIY enthusiasts benefit from clear labeling and industry-standard terminal spacing, cutting installation time and reducing wiring errors that damage expensive electronic modules. Tested automotive fuse blocks perform identically after 500 thermal cycles between 40°C and 85°C, confirming durability under real-world temperature swings. Shop the official EARU store now to secure this reliable 12V fuse block at competitive pricing with immediate availability for your next electrical project.















V***a –
gr8 deal
AliExpress Shopper –
Good box, came with broken ear, packaging not very secure, wasnt planning to use the ear anyways, will be securing it from the bottom so the ear doesnt matter, relays are 4 pin, but it is possible to use 5 pin relays too, just need additional contact, hole already present, good product
G***z –
Good