12V Pre‑Wired Fuse Relay Box–6 Relays & 6 Fuses with ATC/ATO Blade Fuses, 4‑Pin 40A JD1912 Relay Block Kit for Car Truck RV (Wire Rated 30A)

About this item

• Pre‑wired & Ready to Use – This 12V relay box comes factory‑terminated with 4mm² (≈11 AWG) cables for power and output, cutting your wiring work in half. Fuses can be swapped in place easily. Ideal for DIYers who want a faster, cleaner installation.
• Compact & Organized Design – Holds 2 relays and 6 ATC/ATO blade fuses in a single box. Keeps your vehicle’s electrical system tidy, reduces loose wires, and makes troubleshooting much simpler.
• 40A Relay – Wire Rating Clarification – Includes six 4‑pin 40A JD1912 relays (contact rating). Important: The pre‑wired 4mm² leads are rated for 30A continuous – suitable for most lights, fans, pumps, and accessories under 30A per circuit. The 40A relay provides a safety margin for inrush current, not for continuous 40A load. Please confirm your device current before purchase.
• [Various Size Fuses]:This auto fuse block will also come with 12 pieces of ATC/ATO fuses, which includes 2 x 5A, 2 x 10A, 2 x 15A,2 x 20A,2 x 25A and 2 x 30A blade fuses, can meet a wide range of using requirements
• Dust‑Cover & Solid Mounting – Top and bottom covers block dust entry. Screw‑mount design ensures secure placement in engine bays, cabins, or interior compartments. Suitable for cars, trucks, Jeeps, RVs, tractors – perfect for 12V systems.