Description
High-Current Protection for Dual Battery, Car Audio, and Automotive Electrical Systems.
Product Overview
The OEX ACX6514 is a single-way, in-line MIDI fuse holder built for high-current automotive electrical applications. Rated up to 250A and compatible with voltages from 1V to 32V, it suits a broad range of 12V and 24V vehicle systems from dual battery setups and caravan power circuits to car audio amplifier installations and heavy-duty auto electrical work.
Designed for quick and easy permanent mounting with a 30mm centre-to-centre stud spacing, the ACX6514 features stainless steel studs for corrosion resistance and long-term reliability. A wide operating temperature range of -40°C to +120°C makes it well-suited to Australian conditions from outback summer heat to alpine overnight lows.
Key Specifications
- Maximum current rating: 250A
- Rated voltage: 1V – 32V
- Fuse type: MIDI fuse compatible
- Compatible with: ANG metal fuse strips and MIDI fuses
- Circuits: 1 (single way)
- Stud material: Stainless steel
- Mount centre to centre: 30mm
- Operating temperature: -40°C to +120°C
- Type: SF30
- Pack quantity: 1
Features & Benefits
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250A Maximum Current Rating — Handles high-current loads with confidence, making it suitable for demanding applications including dual battery systems, high-output amplifiers, auxiliary power circuits, and heavy-duty auto electrical installations.
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1V – 32V Voltage Range — Compatible with standard 12V and 24V automotive systems, covering everything from passenger vehicles and 4WDs to caravans, trucks, and marine applications.
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MIDI Fuse Compatible — Accepts MIDI fuses, a widely used standard in automotive high-current protection. Sourcing replacement fuses is straightforward at most auto electrical suppliers across Australia.
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Stainless Steel Studs — Corrosion-resistant hardware that holds up in high-humidity, coastal, and marine-adjacent environments where lesser materials can degrade over time.
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Wide Temperature Range (-40°C to +120°C) — Engineered to perform across extreme temperatures — from freezing alpine conditions to underbonnet heat in outback Australia.
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30mm Centre-to-Centre Mounting — Standard stud spacing makes installation and cable management straightforward, with a clean permanent-mount footprint that suits enclosed battery boxes and engine bay installations alike.
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Single-Way Circuit — Dedicated protection for one high-current circuit, keeping your installation clean and your circuit protection specific. Sold individually as a single unit.
Technical Specs
| Specification |
Detail |
| Brand |
OEX |
| Part Number |
ACX6514 |
| Type |
SF30 |
| Maximum Current Rating |
250A |
| Rated Voltage |
1V – 32V |
| Circuits |
1 (Single Way) |
| Fuse Compatibility |
MIDI Fuses / ANG Metal Fuse Strips |
| Stud Material |
Stainless Steel |
| Mount Centre to Centre |
30mm |
| Operating Temperature |
-40°C to +120°C |
| Pack Quantity |
1 |
Compatible With / Goes Well With
Suitable applications:
- Dual battery systems in 4WDs, caravans, and camper trailers
- Car audio amplifier power feeds
- Auxiliary power circuits and relay wiring
- Marine and caravan 12V/24V electrical systems
- Aftermarket lighting and accessory wiring
- Battery-to-battery charger installations
- Solar and off-grid power systems
Pairs well with:
- OEX and compatible MIDI fuses (replacement fuses)
- OEX amplifier wiring kits and battery cables
- Distribution blocks and busbar systems
- Anderson plug assemblies and dual battery isolators
Caution: Always match the fuse rating to the specific cable and circuit requirements of your installation. Confirm correct fuse sizing with a qualified auto electrician.
Frequently Asked Questions
What type of fuse does the OEX ACX6514 accept?
The ACX6514 is compatible with MIDI fuses and ANG metal fuse strips. MIDI fuses are a widely available standard at most auto electrical suppliers across Australia.
Can this fuse holder be used on both 12V and 24V systems?
Yes. The ACX6514 is rated from 1V to 32V, making it compatible with both 12V and 24V automotive, caravan, and marine electrical systems without modification.
What is the maximum current this fuse holder can handle?
The supplier specifications state a maximum current rating of 250A. Note that the product title references 150A — this discrepancy should be confirmed with OEX before installation on high-current circuits.
Is this fuse holder suitable for underbonnet or enclosed battery box installation?
Yes. The -40°C to +120°C operating temperature range and stainless steel studs make it suitable for underbonnet heat, enclosed battery boxes, and outdoor caravan installations.
How many fuse holders come in the pack?
The ACX6514 is sold as a single unit — one fuse holder per pack. Additional units must be purchased separately.
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