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The OEX ACX6529 is a 500A bolt-on mega fuse of SF51 type, rated to 32V DC with copper tin plated contacts. Measuring 68.5mm in length with a 50.8mm centre-to-centre mounting distance, it is supplied in a pack of 5. Covered by a one-year warranty. Also available individually as the ACX6529BL.
The ACX6529 is the highest-rated fuse in the OEX SF51 mega range at 500A, designed for extreme high-current main circuit protection in 12V and 24V electrical systems. At this amperage, applications include main feeds on large lithium battery banks, high-output multi-alternator charging systems, heavy commercial vehicle power distribution busbars and large-scale professional audio installations where total system current draw reaches the limits of conventional main fusing. The bolt-on SF51 format ensures the secure, vibration-resistant connection necessary for reliable operation under sustained extreme current loads.
Copper tin plated contacts maintain reliable conductivity and oxidation resistance across the service life of the fuse. The pack of 5 suits professional workshops and trade installers working with high-current systems regularly. The 50.8mm centre-to-centre bolt spacing is compatible with a wide range of SF51 mega fuse holders, and the single-unit version is available as ACX6529BL.
500A rated mega fuse: The highest-rated fuse in the OEX SF51 mega range at 500A, suited to main feeds on large lithium battery banks, multi-alternator charging systems, heavy commercial power distribution and large professional audio installations.
Bolt-on SF51 type: Bolt-on connection provides a secure, vibration-resistant installation essential for reliable operation under sustained extreme current loads.
Copper tin plated contacts: Tin-plated copper contacts provide reliable conductivity and resist oxidation over time, maintaining consistent fuse performance.
32V DC rating: Compatible with both 12V and 24V DC vehicle electrical systems within the 32V rating.
68.5mm length: Standard SF51 mega fuse length compatible with a wide range of mega fuse holders.
50.8mm centre-to-centre mounting: Standard SF51 bolt spacing compatible with a wide range of mega fuse holders.
Pack of 5: Five fuses per pack provides spares for professional workshop or trade use alongside the installed fuse.
One year warranty: Covered by a one-year OEX warranty.
| Specification | Detail |
|---|---|
| SKU | ACX6529 |
| Brand | OEX |
| Fuse Type | Mega (SF51) |
| Amperage | 500A |
| Voltage Rating | 32V DC |
| Contact Material | Copper tin plated |
| Length | 68.5mm |
| Mount Centre to Centre | 50.8mm |
| Pack Quantity | 5 |
| Warranty | One year |
| Sold As | Pack of 5 |
How does the ACX6529 compare to other OEX mega fuses in this range? The OEX SF51 mega fuse range includes the ACX6519 (60A), ACX6520 (80A), ACX6522 (125A), ACX6523 (150A), ACX6527 (250A), ACX6528 (300A) and ACX6529 (500A). All share the same SF51 format and 50.8mm mount spacing. The ACX6529 is the highest-rated option in the range, suited to the most extreme high-current main circuit applications.
Is the ACX6529 available individually? Yes. The ACX6529BL is the single-unit version of this fuse. Contact us to order the single pack if you only need one fuse.
What fuse holder is compatible with the ACX6529? The ACX6529 uses a standard SF51 mega fuse format with 50.8mm centre-to-centre bolt spacing, compatible with mega fuse holders designed for this spacing. Contact us if you need help selecting a compatible OEX fuse holder.
Can the ACX6529 be used in a 24V system? Yes. The ACX6529 is rated to 32V DC, covering both 12V and 24V vehicle electrical systems.
Is the 500A rating suitable for my application? 500A is suited to the most extreme high-current main circuit protection applications including large lithium battery bank feeds, multi-alternator systems and large commercial power distribution. If you are unsure whether 500A is the correct rating for your circuit, contact us for advice before purchasing.
Servicing the Illawarra and surrounding areas for over 30 years, Frankies Auto Electrics is a multi-award winning service provider and retail outlet, covering all aspects of auto electrical work and in-car entertainment. From sales and installations, electrical diagnostics and fault finding, upgrades and additions, our team of qualified sales people, technicians and installers are on hand to help.
Albion Park
69 Princes Highway, Albion Park Rail, NSW Australia 2527
South Nowra
4/142 Princes Highway, South Nowra, NSW Australia 2541
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