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The OEX ACX1844 is a 60A Type III heavy duty manual reset circuit breaker the higher-amperage version of the ACX1843 (50A), sharing identical specifications apart from the 60A current rating. Suited to higher-draw circuits including large dual battery systems, heavy winches, inverters and high-current commercial vehicle accessories where the 50A ACX1843 falls short. Type III switchable, IP67, 9.5mm stainless steel studs with rubber caps, and up to 72VDC voltage range. Covered by a one year warranty.
The ACX1844 is the highest-rated circuit breaker in the OEX manual reset range at 60A, suited to the most demanding high-current circuits where the ACX1843 (50A) and ACX1842 (30A) are undersized. Large dual battery main feeds, heavy winches, power inverters and high-current commercial vehicle and mining circuits are the primary applications. All other specifications are identical to the ACX1843 Type III switchable for both overcurrent protection and manual isolation, IP67 waterproof and dustproof housing, 9.5mm stainless steel studs for heavier gauge cable lugs, rubber stud caps and up to 72VDC covering 12V, 24V and 48V systems.
The manual reset function requires deliberate operator action to restore the circuit after a trip, ensuring the fault is identified before re-energising. The Type III switchable classification adds an isolation function, allowing the breaker to manually open and close the circuit in addition to providing overcurrent protection useful in applications where both functions are needed without installing a separate isolation switch.
60A heavy duty rating: The highest rating in the OEX manual reset circuit breaker range, suited to large dual battery feeds, heavy winches, inverters and high-current commercial vehicle circuits where the 50A ACX1843 is undersized.
Type III switchable circuit breaker and isolation switch: Functions as both a manual reset circuit breaker and a manual on/off isolation switch.
Up to 72VDC: Covers 12V, 24V and 48V electrical systems including solar, dual battery, marine and EV auxiliary circuits.
9.5mm stainless steel studs: Corrosion-resistant high-current connection points accommodating heavier gauge cable lugs.
IP67 waterproof and dustproof: Complete dust exclusion and temporary water immersion rating, suited to exposed, external and marine installations.
Rubber stud caps: Protect stud terminals from moisture, contamination and accidental short circuit.
Manual reset: Requires deliberate operator action to restore the circuit after a trip.
One year warranty: Covered by a one year OEX warranty.
| Specification | Detail |
|---|---|
| SKU | ACX1844 |
| Brand | OEX |
| Type | Type III Heavy Duty Manual Reset Circuit Breaker |
| Current Rating | 60A |
| Reset Type | Manual reset (switchable) |
| IP Rating | IP67 |
| Stud Size | 9.5mm |
| Stud Material | Stainless steel |
| Terminal Protection | Rubber stud caps |
| Voltage Rating | Up to 72V DC |
| Pack Quantity | 1 |
| Warranty | One year |
| Sold As | Single unit |
How does the ACX1844 differ from the ACX1843? Both are Type III heavy duty manual reset circuit breakers with identical specifications 9.5mm stainless studs, IP67, up to 72VDC and switchable. The ACX1844 is rated at 60A and the ACX1843 is rated at 50A. Select the ACX1844 for circuits drawing between 50A and 60A, or where a higher protection threshold is required.
What wire gauge suits a 60A circuit breaker? A minimum of 8mm² (approximately 8AWG or 8 B&S) automotive grade cable is typically recommended for 60A continuous circuits up to approximately 5 metres. For longer runs or high-duty-cycle applications, upsize to 10mm² or larger. Always match wire gauge to both the current draw and the cable run length.
What does "Type III switchable" mean? A Type III manual reset circuit breaker also functions as a manual on/off switch, allowing the operator to manually open and close the circuit in addition to providing overcurrent protection. This adds isolation functionality not available in a standard manual reset breaker.
Is this suitable for 48V solar systems? Yes. The ACX1844 is rated up to 72VDC, covering 12V, 24V and 48V applications including solar charge controller protection on larger systems.
Where should this circuit breaker be installed? As close as practical to the power source ideally within 300mm of the battery terminal or distribution point to 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.
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69 Princes Highway, Albion Park Rail, NSW Australia 2527
South Nowra
4/142 Princes Highway, South Nowra, NSW Australia 2541
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