OEX ACX2081BL 15A Mini Manual Reset Circuit Breaker Type 3 Switchable

OEX ACX2081BL 15A Mini Manual Reset Circuit Breaker Type 3 Switchable

Protect low-to-medium current circuits with the OEX ACX2081BL 15A mini manual reset circuit breaker featuring Type 3 switchable operation for combined circuit protection and isolation, IP66 waterproof and dustproof housing for exposed installation environments, UL 94VO rated thermal plastic housing for fire-resistant safety, SAE J553, J1171, and UL1500 ignition-protected compliance for marine and automotive applications, an extended operating temperature range of -40°C to 85°C for extreme-condition reliability, #10-32 threaded studs with protective insulators accepting 6mm or ¼ inch terminal lugs, and OEX ISO 9001 certified quality built for demanding Australian automotive, marine, and industrial conditions.

Product Overview

The OEX ACX2081BL is a compact Type 3 mini manual reset circuit breaker delivering professional-grade overcurrent protection and circuit isolation in a space-efficient surface mount form factor designed for applications where a standard full-size circuit breaker would be impractical or unnecessary. At 15 amps, the ACX2081BL steps up from the 10A ACX2080BL to cover a broader range of medium-current auxiliary circuits including LED light bars, accessory switch panels, USB charging hubs, navigation electronics, small pumps, electric step motors, and other moderate-draw accessories in automotive, marine, caravan, and 4WD applications where reliable, resettable protection is required without the bulk or cost of a heavy-duty breaker. The compact 58.2 x 35.7 x 34.7mm dimensions allow installation in electrical panels, switch panels, junction boxes, and confined under-dash or under-bonnet locations where space is limited, while the surface mount design eliminates the need for a dedicated housing or enclosure. The switchable Type 3 functionality allows the ACX2081BL to serve the dual role of overcurrent protection and manual on/off circuit isolation switch — enabling deliberate circuit shutdown without requiring a fault event, which is particularly useful for marine bilge systems, auxiliary lighting, and accessories requiring controlled operator isolation. SAE J553, J1171, and UL1500 ignition-protected compliance certifications confirm the ACX2081BL meets recognised international standards for use in fuel-vapour environments on marine vessels. IP66 housing certification provides reliable protection against powerful water jets and complete dust ingress, making the ACX2081BL suitable for cockpit, deck, outdoor panel, and exposed equipment installations.

Features & Benefits

15A Type 3 Switchable Manual Reset Combines overcurrent circuit protection with deliberate manual isolation capability, providing both safety and operational control over the protected circuit without requiring a separate isolator switch.

Compact Mini Surface Mount Design The 58.2 x 35.7 x 34.7mm form factor fits neatly into electrical panels, switch panels, and confined spaces where standard full-size circuit breakers are too large, simplifying installation in tight locations.

IP66 Waterproof & Dustproof Housing Rated against powerful water jets and complete dust ingress, enabling reliable installation in exposed marine cockpit, deck, outdoor equipment, and under-bonnet panel locations subject to wash-down and environmental exposure.

UL 94VO Rated Thermal Plastic Housing Fire-resistant housing material certified to UL 94VO flammability standard, providing an important safety layer in automotive and marine applications where fire risk from electrical faults must be minimised.

SAE J553, J1171 & UL1500 Compliant Meets recognised international automotive and marine electrical standards including ignition protection certification, confirming suitability for use in fuel-vapour environments such as marine engine bays and enclosed bilge areas.

Extended Operating Temperature Range Rated from -40°C to 85°C for reliable performance across extreme cold and heat conditions encountered in alpine, desert, tropical marine, and industrial mobile equipment applications throughout Australia and beyond.

#10-32 Threaded Studs with Protective Insulators Standard threaded studs accept 6mm or ¼ inch terminal lugs for secure, vibration-resistant connections, with included protective stud insulators maintaining terminal safety and preventing accidental contact.

Technical Specs

Compatible With / Goes Well With

The OEX ACX2081BL is compatible with 12V and 24V DC electrical systems up to 32VDC across passenger vehicles, 4WD, caravans, motorhomes, marine vessels, and light industrial mobile equipment. Well suited to protecting LED light bars, accessory switch panels, USB charging hubs, navigation electronics, small pumps, electric step systems, and medium-draw auxiliary loads up to 15 amps. Also available in 10A, 20A, 30A, 40A, 50A, and 60A single packs for matching protection to specific circuit requirements, with 5-packs available in 40A, 50A, and 60A for multi-circuit panel builds. Pairs well with OEX distribution blocks, OEX switch panels and accessories, OEX wiring harnesses and cable accessories, and OEX terminal connectors and busbars for complete circuit protection and distribution system installations.

Frequently Asked Questions

When should I choose the 15A ACX2081BL over the 10A ACX2080BL for my circuit?

Choose the 15A ACX2081BL when your circuit's continuous current draw exceeds 10 amps or when protecting circuits with moderate-current loads such as LED light bars, USB charging hubs with multiple ports, small water pumps, navigation electronics clusters, or accessory switch panels feeding several low-current loads simultaneously. A general rule is to size the breaker at approximately 125% of the circuit's maximum continuous current draw — so for a circuit drawing up to 12 amps continuously, the 15A ACX2081BL is the correct choice. The 10A ACX2080BL is more appropriate for single low-draw accessories, interior lighting, and circuits where peak current never approaches 10 amps.

Can I use the ACX2081BL as both a circuit breaker and an on/off switch for my accessory circuit?

Yes. The Type 3 switchable function allows the ACX2081BL to be manually toggled on and off independently of any fault event, removing the need for a separate isolation switch on the same circuit. This is particularly practical for auxiliary lighting, bilge pumps, USB chargers, and accessory circuits in panels where space is limited and combining protection and switching functions into one device saves both space and wiring complexity.

What does the UL1500 ignition protection compliance mean for marine installations?

UL1500 is the Underwriters Laboratories standard for ignition protection of marine products. It certifies that the ACX2081BL is designed and tested to not ignite flammable fuel vapours that may be present in marine engine compartments and bilge areas. This is a requirement under many marine safety standards including those referenced by Australian Maritime Safety Authority (AMSA) guidelines, and is an important consideration when installing electrical components in enclosed spaces near fuel tanks, fuel lines, or bilge areas on boats and vessels.

What terminal lug size do I need for the ACX2081BL's #10-32 threaded studs?

The ACX2081BL's #10-32 threaded studs accept terminal lugs with a 6mm or ¼ inch hole, sometimes described as a #10 or M5 lug in automotive and marine wiring accessories. For a 15A circuit, appropriately sized wire (typically 14 AWG / 2.5mm² for most runs, or 12 AWG / 4mm² for longer runs) terminated with a correctly crimped ring terminal lug is recommended. Always use a ratchet crimping tool for reliable, gas-tight crimps and confirm the lug hole matches the 6mm or ¼ inch stud size for a secure, vibration-resistant fit.

What other amperage options are available in the OEX ACX2080 Mini Circuit Breaker range?

The ACX2080 series is available in single packs across seven amperage ratings: 10A (ACX2080BL), 15A (ACX2081BL), 20A, 30A, 40A, 50A, and 60A, allowing you to match the breaker precisely to the current requirements of each circuit. For multi-circuit protection panel builds, 5-packs are also available in 40A, 50A, and 60A ratings. All variants share the same compact Type 3 switchable mini form factor, IP66 rating, and SAE/UL compliance, making it straightforward to standardise on the ACX2080 series across an entire electrical system build.