12V 12 Way Pre-Wired Fuse Relay Box Kit with 8 x 40A 5-Pin Relays
US$83.23
Arrives as soon as ✓ Free shipping — over $200Description
Product Details Connector Type:Crimp Mounting Type:Screw Mount Included Components:FB128B Number of Items:1 Part Number:FB128B Warranty Description:No Contact Type:Normally Closed, Normally...
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Orders of $200 or more ship free. No code needed.
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Product Details
- Connector Type:Crimp
- Mounting Type:Screw Mount
- Included Components:FB128B
- Number of Items:1
- Part Number:FB128B
- Warranty Description:No
- Contact Type:Normally Closed, Normally Open
- Current Rating:40 A
- Operation Mode:Automatic
- Coil Voltage:12 volts
- Contact Current Rating:40 A
- Minimum Switching Voltage:12 volts_of_direct_current
- Specification Met:CE
- Contact Material:Copper
- Item Highlight:12 Slot ATC/ATO Fuse Relay Block, Universal Relay Panel, for 4x4 Truck RV LS Swaps Lights Cooling Fans
- Model:FB128B
About this item
- PLUG PLAY WITH DIYReady to install right out of the box. This 12-way fuse and relay module kit includes eight 5-pin 40A JD1914 relays and 12 ATC/ATO blade fuses (5A, 10A, 15A, 20A, 25A, 30A ). You can replace these fuses according to actual needs
- SAFE CURRENT CAPACITIES Engineered for optimal stability, the main power input utilizes three 4mm² wires in parallel, while the relay load outputs feature pre-installed 2.5mm² wires. Although the relays are rated for 40A, the 2.5mm² output wiring safely limits the maximum continuous load to 25A per circuit. The total combined current across all circuits must be strictly capped at 96A to prevent overheating. (An unwired version is available for custom heavy-gauge projects)
- DUSTPROOF PROTECTION Features a secure top cover that effectively blocks dust, dirt, and debris from active circuits. NOTE: This unit is strictly dustproof and designed to handle light splashes, but it is NOT completely waterproof. Mount it in a dry, protected location like the cabin or high up under the hood, away from submersion
- DOUBLE OVERCURRENT SAFETY Engineered for reliable 12V power management. The 8 pre-wired relays are wired in series with the blade fuses, delivering dual protection for your electrical systems. It is the perfect solution for powering headlights, fog lights, cooling fans, air horns, fuel pumps, and custom 4x4 or RV aftermarket builds
- VERIFY MOUNTING CLEARANCETo ensure a seamless installation, please carefully review the product dimensions shown in the listing images prior to purchase 170mm x 80mm x 105mm (6.69″ x 3.15″ x 4.13″). Confirm that your vehicle has adequate mounting clearance—whether under the hood, under the dash, or in the trunk—to accommodate both the box's overall footprint and the necessary space for the bottom wire exits
Shipping Policy
Weekend Shed ships from the United States.
Most orders leave the warehouse within 1 business day and arrive in 2–7 business days.
- Free shipping on orders of $200 or more, applied automatically
- Otherwise shipping is a flat $6.90
- Your tracking number is emailed as soon as your order ships
- We currently ship to the lower 48 United States
Return policy
30-day returns.
If it's not quite right, you can request a return within 30 days of delivery, and Weekend Shed will email you return instructions. Change-of-mind returns must be unused, unassembled, and in their original packaging. There is no restocking fee. Depending on the item's packaged size and weight and how it needs to be collected, a change-of-mind return may have a return shipping or pickup cost. We only deduct the actual cost: we tell you the exact amount and get your OK before arranging a paid return, and if there is no cost, nothing is deducted. Returns for damaged, defective, or incorrect items are free.
How it works
- Email us at support@weekendshed.com with your order number.
- We send your return instructions within 1 business day, along with any return shipping cost so you can decide.
- Your refund goes back to your original payment method within 10 business days of the carrier scan.
Damaged or defective on arrival? Send a photo and Weekend Shed replaces or refunds immediately, return shipping on us, and in most cases you won't need to send anything back.