An 11 way fuse relay box combines six 12V 40A automotive relays with eleven ATO/ATC blade fuse positions and a pre-wired harness in one centralized electrical control assembly. The 5-pin JD1914 relays use terminals 30, 85, 86, 87 and 87a for changeover switching, making the box suitable for organized multi-circuit control and fuse protection in 12V vehicle electrical systems.
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An 11 way fuse relay box combines six automotive relay positions, eleven blade fuse positions and a pre-wired wiring harness in one centralized electrical control assembly. It is designed for 12V vehicle electrical systems where multiple accessories require both relay switching and individual fuse protection.
The assembly uses six JD1914 12V 40A 5-pin automotive relays. Each relay includes terminals 30, 85, 86, 87 and 87a, providing a changeover switching configuration. Eleven fuse positions are designed for standard ATO/ATC blade fuses.
| Item | Specification |
|---|---|
| Model | CZY-RB03 |
| Product Type | 11 Way Fuse Relay Box |
| Operating Voltage | 12V DC |
| Number of Relays | 6 |
| Relay Model | JD1914 |
| Relay Type | 5-Pin SPDT / Changeover Automotive Relay |
| Relay Rating | 12V / 40A |
| Relay Pins | 30 / 85 / 86 / 87 / 87a |
| Number of Fuse Positions | 11 |
| Compatible Fuse Type | ATO/ATC Standard Blade Fuse |
| Wiring | Pre-Wired Harness |
| Housing Material | Plastic |
An 11 way fuse relay box is suitable for 12V electrical systems where several accessories require centralized relay switching and individual branch fuse protection.
The JD1914 relays use a five-pin changeover configuration. Unlike a basic four-pin normally open relay, the additional 87a terminal provides a normally closed contact.
When the relay coil is not energized, terminal 30 is connected to 87a. When the coil is energized, the contact switches from 87a to 87.
The relay and fuse sections perform different functions within the electrical system. Relays provide electrical switching, while the fuse positions provide overcurrent protection for the connected wiring and loads.
An 11 way fuse relay box centralizes these components in one panel, reducing the need for multiple separate relay sockets, inline fuse holders and scattered wiring.
Building a multi-relay control system from individual sockets, fuse holders and loose wiring can require more installation time and create more separate connection points.
The pre-wired harness helps organize the electrical circuits within one assembly, making integration, inspection and future servicing more manageable.
The correct fuse rating should be selected according to the connected load, conductor size and circuit protection requirements of each individual branch.
The eleven fuse positions do not mean that all circuits should use the same fuse rating. Fuse color alone should also not be used to determine the correct current rating; the actual fuse marking and circuit requirements should always be verified.
The supplied relays are rated at 12V DC and 40A. The 40A value describes the relay switching rating and should not be interpreted as the required operating current of every connected accessory.
Relay capacity, fuse rating, conductor size and actual load current should be evaluated together when designing the complete circuit.
Individual relay sockets and inline fuse holders can work well for a small number of circuits, but larger accessory systems can become difficult to organize when many separate components are installed.
An 11 way fuse relay box brings six relay-controlled positions and eleven blade fuse positions together in one centralized panel, providing more flexibility for multi-circuit vehicle wiring.
The assembly includes six JD1914 automotive relays rated at 12V and 40A.
The relays used in this configuration are 5-pin changeover relays with terminals 30, 85, 86, 87 and 87a.
The eleven fuse positions are designed for standard ATO/ATC blade fuses.
Terminal 87 is the normally open contact, while 87a is the normally closed contact. Terminal 30 switches between these two contacts depending on whether the relay coil is energized.
No. Relay rating and fuse rating serve different purposes. The fuse should be selected according to the protected wiring and connected load.
Cozy Electronics provides OEM and ODM support for relay boxes, automotive circuit protection products, wiring harnesses and customized electrical assemblies. Buyers can provide relay configuration, fuse requirements, connector information, wire specifications and circuit requirements for project evaluation.
Contact Cozy Electronics for relay box specifications, custom wiring requirements and OEM/ODM project inquiries.
