DC Fuse Distribution Modules
Reliable Circuit Protection and Power Distribution
DC Fuse Distribution Modules provide safe and efficient DC power branching with built-in fuse protection.
Available in 4, 6, and 8 channels, and two connection types — screw or spring clamp, these modules simplify wiring and ensure circuit reliability in industrial, solar, and vehicle systems.
A DC Fuse Distribution Module is a compact device designed to split and protect DC power circuits within control panels or electrical systems.Each channel integrates a fuse holder and LED indicator, allowing quick identification of circuit faults without affecting other lines.When overload or short-circuit occurs, the fuse automatically disconnects that channel, ensuring the rest of the system continues to operate safely.
These modules combine power distribution, overcurrent protection, and clear visual monitoring in one compact DIN-rail unit.They are widely used in industrial automation, solar energy systems, battery cabinets, and vehicle DC applications, helping engineers simplify wiring and enhance electrical safety.
AOSI offers two connection types for its DC Fuse Distribution Modules — screw terminals and spring terminals — each suited to different wiring preferences and application needs.
Screw terminal fuse modules provide strong mechanical fastening for high-vibration environments. This design is preferred in industrial control panels, vehicle systems, or anywhere wiring is subject to movement or thermal expansion.
Firm mechanical connection, resistant to vibration
Suitable for thicker wires or ring terminals
Ideal for fixed cabinet installations
Spring terminal fuse modules use a push-in or press-fit design, allowing tool-free and faster wiring. This type is popular in modern automation panels where quick maintenance and high wiring density are important.
Quick, tool-free wiring
Consistent clamping force, even under vibration
Easier re-wiring and maintenance on site
In short, screw terminals prioritize mechanical strength, while spring terminals emphasize speed and flexibility.
Both types are DIN-rail mountable, rated up to 72 V DC and 15 A per channel, and fully compatible with standard automotive-type blade fuses.
AOSI DC Fuse Distribution Modules are available in screw-type and spring-type versions, with 4, 6, or 8 channels to meet different DC system requirements.
All models feature standard automotive blade fuses, LED indicators for each circuit, and DIN-rail mounting for easy installation.
Use the guide below to find the model that best fits your project’s current, voltage, and wiring needs.
Screw-Type Fuse Modules
| Model | Channels | Rated Current | Rated Voltage | Wire Range (Input) | Wire Range (Output) |
|---|---|---|---|---|---|
| FM03-04D | 4 | 15 A | 72 V DC | 0.5–4 mm² | 0.5–2.5 mm² |
| FM03-06D | 6 | 15 A | 72 V DC | 0.5–4 mm² | 0.5–2.5 mm² |
| FM03-08D | 8 | 15 A | 72 V DC | 0.5–4 mm² | 0.5–2.5 mm² |
Spring-Type Fuse Modules
| Model | Channels | Rated Current | Rated Voltage | Wire Range (Input) | Wire Range (Output) |
|---|---|---|---|---|---|
| HM03-04D | 4 | 15 A | 72 V DC | 0.5–6 mm² | 0.5–2.5 mm² |
| HM03-06D | 6 | 15 A | 72 V DC | 0.5–6 mm² | 0.5–2.5 mm² |
| HM03-08D | 8 | 15 A | 72 V DC | 0.5–6 mm² | 0.5–2.5 mm² |
Highlights:
✅ 1LED indicator on each channel for quick fault location
✅ RStandard blade fuses, easy to replace
✅ ERated up to 72 V DC / 15 A per channel
✅ SDIN-rail mounting and compact enclosure
✅ PAvailable in both screw and spring connection types
Every AOSI DC Fuse Distribution Module is built to meet industrial-grade electrical standards. From compact 4-channel modules to 8-channel high-density types, all models share the same stable electrical performance, durable housing, and universal fuse compatibility. Below is the key technical data for quick reference.
| Model | Type | Channels | Dimensions (L×W×H mm) | Housing Color |
|---|---|---|---|---|
| FM06-02D | Screw terminal | 2 | 90×59×42 | Black |
| FM06-03D | Screw terminal | 3 | 105×59×42 | Black |
| FM06-04D | Screw terminal | 4 | 121×59×42 | Black |
| FM06-06D | Screw terminal | 6 | 153×59×42 | Black |
| FM06-08D | Screw terminal | 8 | 188×59×42 | Black |
| FM06-12D | Screw terminal | 12 | 259×59×42 | Black |
| FM06-16D | Screw terminal | 16 | 295×59×42 | Black |
| HM06-02D | Spring clamp | 2 | 90×59×42 | Black / Orange |
| HM06-03D | Spring clamp | 3 | 105×59×42 | Black / Orange |
| HM06-04D | Spring clamp | 4 | 121×59×42 | Black / Orange |
| HM06-06D | Spring clamp | 6 | 153×59×42 | Black / Orange |
| HM06-08D | Spring clamp | 8 | 188×59×42 | Black / Orange |
| HM06-12D | Spring clamp | 12 | 259×59×42 | Black / Orange |
| HM06-16D | Spring clamp | 16 | 295×59×42 | Black / Orange |
All models share the same electrical rating (72V / 20A) and support wide wire range (0.5–6 mm² / 22–12 AWG). Differences mainly lie in channel count, dimensions, and connection type (screw or spring).
At AOSI Terminals, we understand that every DC control system demands precise circuit protection.With over 15 years of manufacturing experience, we provide a full range of DC fuse distribution modules — from compact 4-channel units to high-density 8-channel blocks, available in both screw and spring connection types.Every model is designed to deliver stable current flow, quick fault indication, and long-term reliability in automation and energy systems.
AOSI DC Fuse Distribution Modules are widely used across various DC power systems that require safe circuit protection and organized wiring.
Their compact structure, LED indication, and replaceable fuse design make them ideal for industrial and energy applications where uptime and reliability are critical.
In factory automation and machinery control cabinets, DC fuse modules provide reliable power splitting for PLCs, relays, and sensors.They simplify wiring and prevent total system shutdown when a fault occurs.
Used in solar combiner boxes or PV control units to protect individual strings and ensure stable output distribution.Each channel can be independently fused to isolate faults quickly.
In battery management and backup power systems, these modules handle DC output circuits safely and neatly.They enable maintenance-friendly layouts and protect valuable energy storage equipment.
Perfect for 12V / 24V on-board power distribution — including electric vehicles, boats, and mobile equipment —ensuring safety and easy access to each protected circuit.
Wiring a DC Fuse Distribution Module is simple and straightforward.
Each module includes one DC input terminal and multiple fused output channels that safely distribute power to different loads.
Step1. Connect the Power Input
Use the proper wire gauge (0.5–6 mm²) according to your current requirement.
Connect the positive (+) line from the DC power supply to the input terminal marked “IN” or “+”.
If available, connect the negative (–) line to the shared ground bus.
Ensure firm contact — tighten the screw or push in the wire depending on the terminal type.
Step2. Connect the Load Outputs
Each output channel corresponds to one fuse.
Connect each load device (such as PLC, relay, indicator light, or sensor) to an individual output terminal marked OUT1 / OUT2 / OUT3, etc.
This structure ensures that if one circuit fails, the others continue running safely.
📊 Wiring Diagram Example: The spring clamp will expand automatically once the screwdriver is pressed in.
Step3. Verify Fuse Ratings
Install standard automotive-type blade fuses (ATO/ATC) matching your circuit load.
Example: for a 10A circuit, use a 12A–15A fuse.
Always select fuses rated below your cable’s maximum current capacity.
Step4. Check LED Indicators
After power-up, the LEDs should remain off during normal operation.
If a fuse blows, the corresponding LED turns red, allowing quick fault localization.
When selecting a DC Fuse Distribution Module manufacturer, the right choice determines whether your project runs smoothly or faces long-term reliability issues.
Beyond just price, the key is to find a partner who understands engineering standards, product consistency, and after-sales support.
At AOSI Electronics, all our terminal blocks and connectors are rigorously tested and fully certified:
✅ UL, CE, RoHS, and REACH compliant
✅ 100% quality inspection before shipment
✅ Strict adherence to ISO 9001:2015 quality management standards
✅ Fireproof, high-temperature resistant, and vibration-tested designs for industrial environments
🔒 Reliable connection starts with certified components. We make no compromise when it comes to safety and compliance.
As a direct factory with over 15 years of experience in terminal block production, AOSI provides:
🔧 Over 30 injection molding machines
🧰 In-house tooling and mold design capabilities
👷 50+ skilled workers and 8 production lines
🚚 Monthly output over 5 million pieces
From prototyping to bulk delivery, we offer stable lead times, flexible MOQ, and consistent product quality.
Whether you are a distributor, system integrator, or OEM, AOSI is ready to support your growth:
🌐 Exporting to 40+ countries across Europe, Asia, and the Americas
🧩 Customizable options: pin count, logo, color, housing material, packaging
🤖 Engineering support for special pitch, modular block design, and high-current applications
📦 We speak your language: fast communication, drawings, samples, and global logistics support.
Looking for dependable and CE-compliant DC fuse modules for your industrial or solar applications? AOSI Electronics provides 4- to 8-channel fuse distribution blocks with LED indicators, fast delivery, and OEM customization options.
Contact us today to request free samples or a tailored quotation for your project.
A DC fuse distribution module safely divides one DC power input into multiple fused outputs. Each channel has an independent fuse and LED indicator, ensuring quick fault detection without shutting down the entire system.
Yes, as long as your PLC supports RS422/RS485 or TTL-level inputs, the ABZ differential module can interface directly.
AOSI modules are rated 72V DC and handle up to 15A per channel. This makes them suitable for low-voltage DC systems, including solar energy and vehicle power circuits.
Screw-type fuse modules use mechanical tightening for strong vibration resistance, while spring-type fuse modules allow tool-free, quick wiring. Both are rated for the same current and voltage.
Yes. AOSI Electronics supports OEM/ODM customization, including custom fuse ratings, housing colors, private labeling, and packaging for distributors or system integrators.
Looking for other types of terminal blocks? Discover our full range of connection solutions below. Discover our other product families below and find the perfect match for your project.
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