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Alvolta Auto-Reset Circuit Breaker 40A
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Alvolta Auto-Reset Circuit Breaker 40A
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Alvolta Auto-Reset Circuit Breaker 40A

https://www.springers.com.au/web/image/product.template/1244/image_1920?unique=53ef531
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Surface mount circuit breaker with M5 terminal studs

$ 2.45 - Inc GST 2.45 in stock AUD $ 2.45 Tax Included

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ALVOLTA
Terms and Conditions
30-day money-back guarantee
Ships in 2-3 Business Days (online only products may differ)
Circuit Protection, Circuit Breakers, Surface Mount
CB12140

Terms and Conditions
30-day money-back guarantee
Shipping: 2-3 Business Days

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Alvolta Auto-Reset Circuit Breaker 40A



Features

  • 40 A
  • Automatic reset circuit breaker
  • Surface mount
  • Suitable for 12 - 24 V systems
  • IP67 rated
  • M5 terminal studs
​

Where to use it

Alvolta auto-reset circuit breakers are designed for use in applications where a temporary, transient overload is expected and manual resetting would be inconvenient, such as in automotive, marine, or RV applications for things like headlights, power windows, or trailer brakes. They are also useful for circuits in hard-to-reach areas or off-grid systems like cabins, where frequent manual resetting would be difficult. 
​

Dimensions

Width
21 mm
Length
51 mm
Height
​35 mm
Weight
​0.03 kg
​

Compliance

  • SAE J553
  • IP67
​

Warranty

  • 5-year warranty
​

Applications

Marine
RV's
Caravans
Off-Grid Systems
Tiny Houses
Cabins

About Alvolta

Australian-owned and operated and driven by a passion for excellence, Alvolta offers unwavering performance and durability even in harsh Australian conditions. Alvolta specialises in precision-engineered DC components, designed to enhance off-grid adventures. Their commitment to delivering superior power performance with uncompromising quality is evident in their lineup of solar panels, solar charge controllers, circuit protection devices, mounting solutions, tools, and more. Supply yourself with all the arsenal you need to extend your power supply and adventure for longer with Alvolta.

An auto-reset circuit breaker is a protective device that automatically interrupts electrical current when a fault or overload occurs, then resets itself once the fault clears. Unlike manual or fuse-based protection, it doesn’t need to be replaced or reset by hand, making it ideal for 12V and 24V systems commonly used in vehicles, caravans, and boats.

Auto-reset circuit breakers are commonly used in automotive, marine, and off-grid applications, including 4WDs, camper trailers, caravans, and boats. They’re perfect for circuits where occasional short-term overloads occur, such as lighting, pumps, or accessory circuits, and where easy, continuous protection is required without manual resetting.

An auto-reset breaker automatically restores power once it cools down after tripping, while a manual-reset breaker stays off until it’s manually reset by pressing a button or flipping a switch. Auto-reset types are great for non-critical loads, while manual-reset breakers are preferred for safety-critical systems where you need to identify and fix the fault before restoring power.

To select the correct breaker rating, match the amperage to your circuit’s expected continuous current draw, which is typically about 125% of the load current. For example, if your circuit draws 8A continuously, use a 10A breaker. Always refer to manufacturer guidelines and consider the wire size and device specifications for safe protection.

Many auto-reset circuit breakers are designed for dry environments, but weatherproof or sealed versions are available for marine, off-road, or outdoor use. If your installation is exposed to moisture, dust, or vibration, choose a breaker with a sealed housing or IP-rated protection to ensure long-term reliability.

Product Specifications


Model
CB12140
Amperage
40 A
Voltage
>28 V DC
Mounting
Surface
Function Type
Thermal trip-free, cycling
Poles
1
Interrupt Rating
2.5 Kva
Material
​Plastic
Class
​​Type I
Terminal Stud
M5
IP Rating
IP67
Mounting Holes
M4
Dimensions
51 x 21 x 35 mm
Weight ​0.03 kg
Warranty
5 Years

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SKU: CB12150
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Alvolta Auto-Reset Circuit Breaker 40A

$ 2.45 $ 2.45 Tax Included

Not Available For Sale