OEX ACX2082BL 20A Mini Manual Reset Circuit Breaker Type 3 Switchable

OEX ACX2082BL 20A Mini Manual Reset Circuit Breaker Type 3 Switchable

Protect medium-current circuits with the OEX ACX2082BL 20A 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 ACX2082BL 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 suited to medium-current auxiliary circuits where a standard full-size circuit breaker would be impractical or oversized. At 20 amps, the ACX2082BL covers a wide range of practical medium-current applications including electric cooler and fridge circuits, high-output LED driving lights, dual USB and 12V accessory socket panels, cabin fan systems, electric toilet pumps, windlass control circuits, and multi-accessory distribution feeds in automotive, marine, caravan, and 4WD installations. 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, while the surface mount design eliminates the need for a dedicated housing or enclosure. The switchable Type 3 functionality provides dual capability as both an overcurrent protection device and a manual on/off circuit isolation switch, enabling deliberate circuit shutdown without requiring a fault event — particularly useful for fridge and cooler circuits, cabin fans, and accessories requiring controlled operator isolation. SAE J553, J1171, and UL1500 ignition-protected compliance certifications confirm the ACX2082BL 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 for cockpit, deck, outdoor panel, and exposed equipment installations.

Features & Benefits

20A 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 ACX2082BL 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 portable fridge and cooler circuits, high-output LED driving lights, dual USB and 12V socket panels, cabin fan systems, electric toilet and shower pumps, windlass control feeds, and medium-draw auxiliary loads up to 20 amps. Also available in 10A, 15A, 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 20A ACX2082BL over the 15A ACX2081BL for my circuit?

Choose the 20A ACX2082BL when your circuit's continuous current draw exceeds 15 amps or when protecting loads such as portable fridges and coolers (typically 8–15A continuous), high-output LED driving light bars, multi-port USB and 12V accessory socket panels, cabin fans, or small pump systems drawing up to 16 amps continuously. Applying the standard 125% sizing rule, the 20A ACX2082BL is the correct choice for any circuit with a maximum continuous draw of up to 16 amps. For lighter loads under 12 amps continuous, the 15A ACX2081BL is a better fit, while circuits drawing above 16 amps continuous should step up to the 30A variant.

Can the ACX2082BL protect a portable fridge or cooler circuit in my caravan or 4WD?

Yes, the 20A ACX2082BL is well suited to portable fridge and cooler circuit protection. Most 12V compressor fridges draw between 3–8 amps during normal running, with short-duration start-up surges that rarely exceed 15 amps. The 20A rating provides comfortable protection headroom above normal operating current while still responding appropriately to genuine fault conditions. The switchable function is a practical bonus for fridge circuits, allowing deliberate isolation when the vehicle is unattended for extended periods without needing a separate isolation switch.

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 ACX2082BL is designed and tested to not ignite flammable fuel vapours that may be present in marine engine compartments and bilge areas. This compliance 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 ACX2082BL's #10-32 threaded studs?

The ACX2082BL'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 20A circuit, appropriately sized wire (typically 12 AWG / 4mm² for most runs, or 10 AWG / 6mm² for longer runs exceeding 5 metres) 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 (ACX2082BL), 30A, 40A, 50A, and 60A, allowing you to match the breaker precisely to each circuit's requirements. 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.