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The OEX ACX1847 is a 150A Type III heavy duty manual reset circuit breaker designed for high-current circuit protection in automotive, marine, caravan and 4WD applications. Unlike a blade fuse, this circuit breaker can be manually reset after tripping, eliminating the need to carry spare fuses and reducing downtime in the field. IP67 waterproof and dustproof housing with stainless steel 9.5mm studs and rubber protective caps. Rated up to 72VDC. The switchable function also allows the breaker to operate as a manual isolation switch. Covered by a one year warranty.
The ACX1847 extends the OEX Type III circuit breaker series to 150A, suited to the highest-current protection applications including main battery positive supply protection, large dual battery system main feeds, winch circuits, high-capacity inverter protection and marine main power feeds. At 150A it steps well above the ACX1846 (100A) for circuits where the full main supply lead requires protection at this level.
The Type III switchable design allows the breaker to function as both a manual reset circuit breaker and a manual on/off isolation switch. The IP67 housing provides complete dust exclusion and protection against temporary water immersion, suited to exposed and deck-mounted installations. The 9.5mm stainless steel studs with rubber protective caps provide secure, corrosion-resistant cable terminations compatible with standard cable lugs and ring terminals with a 9.5mm hole. Rated up to 72VDC, the ACX1847 covers 12V, 24V and 48V DC vehicle and battery systems including solar and battery storage applications.
150A rating: Suited to main battery supply protection, large dual battery feeds, winch circuits, high-capacity inverter protection and marine main power feeds at the highest current level in the OEX circuit breaker range.
Manual reset (switchable): Resets after tripping without replacing a fuse, reducing downtime in the field. Can also function as a manual isolation switch.
Type III heavy duty construction: Robust housing for demanding automotive, marine and 4WD environments.
IP67 waterproof and dustproof: Fully sealed against dust and temporary water immersion, suited to exposed, underbonnet and deck-mounted installations.
Up to 72VDC: Suits 12V, 24V and 48V DC electrical systems including solar and battery storage applications.
Stainless steel 9.5mm studs: Corrosion-resistant terminations for heavy cable connections. Select cable lugs and ring terminals with a 9.5mm hole to suit.
Rubber stud caps: Protect terminals from moisture, corrosion and accidental contact.
One year warranty: Covered by a one year OEX warranty.
| Specification | Detail |
|---|---|
| SKU | ACX1847 |
| Brand | OEX |
| Type | Circuit Breaker |
| Breaker Type | Type III, Manual Reset (Switchable) |
| Current Rating | 150A |
| Voltage Rating | Up to 72V DC |
| IP Rating | IP67 |
| Terminal Studs | Stainless steel, 9.5mm |
| Terminal Protection | Rubber stud caps |
| Pack Quantity | 1 |
| Warranty | One year |
| Sold As | Single unit |
What is the advantage of a circuit breaker over a fuse? A circuit breaker can be manually reset after it trips, whereas a fuse must be replaced. In remote or off-road situations where carrying spare fuses may not be practical, a resettable circuit breaker provides a significant convenience and safety advantage. This breaker can also be used as a manual isolation switch when required.
How does the ACX1847 compare to the rest of the OEX Type III series? The ACX1847 is rated at 150A, extending the series above the ACX1846 (100A), ACX1845 (80A), ACX1844 (60A) and ACX1843 (50A). All share the same Type III switchable design, 9.5mm stainless studs, IP67 rating and up to 72VDC voltage range. Select based on your circuit's current requirements.
What cable termination size does this breaker use? The breaker uses 9.5mm stainless steel studs. Select cable lugs and ring terminals with a 9.5mm hole to suit these studs.
Is this breaker suitable for marine use? Yes. The IP67 rating confirms full dust protection and resistance to temporary water immersion. Stainless steel studs and rubber caps further protect the terminals from corrosion in marine environments.
Where should this circuit breaker be installed? As close as practical to the power source ideally within 300mm of the battery terminal or distribution pointto minimise the length of unprotected cable between the battery and the breaker.
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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