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The Autoido AD185 is a 1-way MEGA fuse holder designed for compatible MEGA/ANM bolt-down fuses in 32V DC automotive and low-voltage electrical systems.
It features a black protective cover, M8 threaded studs, locking hardware and a modular side-interlocking structure for secure installation and flexible multi-holder configurations.
The AD185 is suitable for battery protection, alternator charging circuits, DC power distribution, inverters, car audio systems, RV electrical systems and other heavy-gauge cable applications.
Autoido supports bulk supply, OEM/ODM production, custom branding and customized packaging for automotive and industrial circuit-protection projects.
Designed for compatible MEGA/ANM bolt-down fuses
Single-circuit, 1-way configuration
Black protective cover
M8 threaded connection studs
Hex nuts and lock washers included
Modular side-interlocking structure
Suitable for heavy-gauge cable connections
Surface-mount installation
Optional MEGA fuse supply
OEM/ODM branding and packaging available
| Specification | Details |
|---|---|
| Model | AD185 |
| Product type | 1-way MEGA fuse holder |
| Compatible fuse | MEGA/ANM bolt-down fuse |
| Rated voltage | 32V DC |
| Compatible fuse range | 40A–500A, subject to fuse dimensions and system requirements |
| Holder continuous-current rating | Confirm using part-number-specific temperature-rise and voltage-drop data |
| Number of circuits | 1 |
| Stud size | M8 threaded studs |
| Connection type | Bolt-down cable-lug connection |
| Cover | Black protective cover |
| Mounting | Surface mounting |
| Modular connection | Side-interlocking structure |
| Fuse included | Optional |
| IP rating | Not specified |
| MOQ | 10 pieces |
| Brand | Autoido |
| Place of origin | Guangdong, China |
| OEM/ODM | Available |
The 40A–500A range describes the available ratings of compatible MEGA fuses. It should not automatically be treated as the continuous-current rating of the fuse holder.
A MEGA fuse holder is a mounting component designed to securely install a MEGA bolt-down fuse in a high-current DC electrical system. It provides the mechanical support and electrical connection required to connect the fuse between the power source and the protected circuit.
The Autoido AD185 is a 1-way MEGA/ANM fuse holder with M8 threaded studs and a protective cover for compatible 32V DC applications.
A compatible MEGA fuse is installed across the two M8 threaded studs. One stud connects to the power source, while the other connects to the protected cable or electrical equipment.
During normal operation, current passes through the fuse. If an overcurrent condition exceeds the fuse’s time-current characteristics, the fuse element opens the circuit and helps protect the downstream cable and equipment.
The fuse holder provides mechanical support and electrical connection. The installed MEGA fuse provides the overcurrent protection.
The AD185 is designed for compatible MEGA/ANM-format bolt-down fuses.
Autoido supplies MEGA bolt-down fuses from 40A to 500A. The correct fuse must be selected according to the electrical system and the holder’s validated capability.
Before ordering, confirm:
Fuse body dimensions
Mounting-hole spacing
Rated current
Rated voltage
Interrupting capacity
Time-current characteristics
Cable size
Cable-lug dimensions
Ambient temperature
Required installation torque
MEGA, MIDI and ANL fuses use different physical formats and should not be treated as interchangeable.
No. A compatible fuse range and the continuous-current rating of a fuse holder are not necessarily the same.
The holder’s actual current-carrying capability depends on:
Stud and hardware materials
Contact resistance
Fuse construction
Cable size
Cable-lug quality
Installation torque
Ambient temperature
Ventilation
Temperature rise
Allowable voltage drop
A 500A claim should only be published when the complete holder assembly has been validated under clearly stated test conditions.
| Feature | AD185 | AD184-B |
|---|---|---|
| Cover | Black protective cover | Transparent protective cover |
| Fuse visibility | Cover must be removed for inspection | Fuse can be viewed through the cover |
| Configuration | 1-way | 1-way |
| Stud size | M8 | M8 |
| Rated voltage | 32V DC | 32V DC |
| Modular connection | Side interlocking | Side interlocking |
| Main selection reason | All-black enclosed appearance | Easier visual fuse inspection |
Choose the AD185 when a black enclosed appearance is preferred. Choose the AD184-B MEGA fuse holder with clear cover when visual inspection without removing the cover is important.
Both models require confirmation of fuse dimensions, electrical ratings and installation conditions.
Disconnect the battery or isolate the power source.
Confirm that the system voltage does not exceed 32V DC.
Select a compatible MEGA fuse for the cable and protected circuit.
Mount the holder securely on a stable surface.
Connect correctly sized cable lugs to the M8 studs.
Install the MEGA fuse between the two studs.
Fit the washers and nuts in the specified order.
Tighten the connections to the validated torque value.
Install the black protective cover.
Check the wiring and connection security before restoring power.
Inspect the holder for abnormal temperature rise after initial operation.
The holder should be installed as close to the power source as permitted by the system design. Protect cables from sharp edges, vibration, excessive heat and moisture.
Installation should be performed according to the vehicle or equipment manufacturer’s electrical requirements.
The AD185 can be used with compatible MEGA fuses for auxiliary battery and main battery cable protection.
The holder can be installed in compatible alternator charging circuits to provide fuse-based overcurrent protection.
The 1-way configuration can be used in high-current DC distribution systems where a MEGA bolt-down fuse is required.
The AD185 can be used in compatible high-current power circuits for car audio amplifiers and power inverters.
| Feature | MEGA | MIDI | ANL |
|---|---|---|---|
| Fuse Type | MEGA | MIDI | ANL |
| Mounting | Bolt-on | Bolt-on | Bolt-on |
| Typical Use | Battery / Alternator | Compact DC circuits | Audio / Marine |
| Size | Medium/High-current | More compact | Larger format |
| AD185 Compatibility | Yes | No | No |
A MIDI fuse holder may be more suitable when installation space is limited. An ANL fuse holder may be considered for compatible audio, marine and aftermarket systems.
Read MIDI Fuse vs MEGA Fuse: Key Differences Explained for additional selection guidance.
The AD185 consists of an insulating fuse-holder body, a black protective cover, M8 threaded studs, hex nuts and lock washers.
The housing supports the fuse and separates the energized connection points from the mounting surface. The protective cover helps reduce accidental contact with the fuse and terminal hardware.
The exact housing resin, stud material, hardware material, plating, flame-retardant rating and operating-temperature range should be confirmed in the part-number datasheet.
Depending on the order and project requirements, inspection and validation can include:
Visual inspection
Dimensional inspection
MEGA fuse fit check
Cover fit and retention test
Thread and hardware inspection
Fastener torque test
Connection-resistance test
Voltage-drop test
Temperature-rise test
Insulation-resistance test
Vibration and connection-loosening evaluation
Packaging inspection
Only tests actually performed for the AD185 should be shown in the final technical documentation.
The black cover helps protect the fuse and terminals from accidental contact and external contamination.
However, a protective cover does not automatically make the complete holder waterproof. The product should only be described as waterproof when it has passed an applicable ingress-protection test and has a verified IP rating.
If no IP rating is available, install the holder in a dry or otherwise protected location.
Autoido supports OEM and ODM requirements, including:
Custom logo and product marking
Housing and cover color options
Hardware and plating options
MEGA fuse and holder kits
Custom packaging
Barcode and private-label packaging
Multi-holder configurations
Inspection and testing requirements
Bulk orders
For an accurate quotation, provide the system voltage, continuous load current, fuse rating, cable size, installation environment, quantity and packaging requirements.
Dongguan Andu Electronic Co., Ltd. has more than 20 years of experience in automotive fuse and circuit-protection product development and manufacturing.
Our capabilities include:
Automotive fuse and fuse-holder manufacturing
In-house product and mold development
Automated production equipment
Laboratory and inspection capabilities
OEM/ODM project support
Custom packaging and branding
Fuse and holder combination supply
Technical support for product selection
Certification and test claims should be confirmed at the exact part-number level.
It is designed for compatible MEGA/ANM-format bolt-down fuses. Confirm the fuse dimensions and mounting-hole spacing before ordering.
The MEGA fuse can be supplied separately or packaged with the holder. Specify the required current and voltage rating when requesting a quotation.
A 32V-rated holder may be used in compatible 12V or 24V DC systems when all current, temperature, fault-current and installation requirements are satisfied.
The page’s compatible fuse range should not automatically be interpreted as the continuous-current rating of the holder. Contact Autoido for validated temperature-rise and voltage-drop data for the intended configuration.
The AD185 uses M8 threaded studs. Select ring terminals that match both the M8 studs and the cable conductor size.
Do not describe it as waterproof unless the complete holder has a verified IP rating or applicable ingress-protection test report.
The AD185 uses a black protective cover, while the AD184-B uses a transparent cover that permits visual fuse inspection. Confirm other specifications using the individual datasheets.
The side-interlocking structure allows compatible holders to be arranged together. Each circuit still requires its own correctly selected fuse and cable.
No. MEGA and MIDI fuses have different dimensions and mounting arrangements. Use only the fuse format specified for the holder.
Install it close to the power source where permitted by the electrical design, on a secure surface protected from excessive heat, vibration and moisture.
A 1-way MEGA fuse holder is designed to mount one compatible MEGA or ANM bolt-down fuse in a DC electrical circuit. The Autoido AD185 uses M8 threaded studs and includes a black protective cover for secure installation.
The AD185 is designed for compatible MEGA/ANM bolt-down fuses from 40A to 500A. The compatible fuse rating should be selected according to the protected cable, electrical load, system voltage and validated holder capability.
Yes. The AD185 features a side-interlocking structure that allows compatible holders to be arranged together. Each circuit should use the correct fuse and cable according to the electrical system requirements.
MEGA and ANL fuse holders are designed for different fuse formats and mounting configurations. The AD185 is designed specifically for compatible MEGA/ANM bolt-down fuses and should not be used with ANL fuses unless the holder is specifically designed for that fuse format.
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