High-amp circuit breakers manufacturer and distributor

High Amperage circuit breakers: everything you need to know about

OptiFuse high amperage heavy-duty automotive circuit breakers protect high-power vehicle systems like winches and compressors, handling 50A to 300A. These resettable breakers don’t need replacement after tripping, offering a convenient and cost-effective alternative to fuses. Available in automatic or manual reset options, the manual reset version also provides switching capabilities with its push-to-reset style.

 

Technical details and specifications

OptiFuse high amperage circuit breakers are available with these specifications. For the most accurate information, refer to individual product datasheets as some ratings may vary by model.

Voltage Rating:

42VDC; 48VDC

Current Rating:

25A~300A

Interrupting Rating:

3000A @ 30VDC

Reset Type:

Type I - Auto Reset; Type III - Manual Reset Push-To-Trip

 

High Amperage circuit breaker applications

High amperage circuit breakers are essential for protecting circuits that handle large currents across various applications. In heavy-duty and recreational vehicles, they are commonly installed alongside batteries as the main source of power protection, safeguarding high amperage draw applications and components such as winches, air compressors, and high-power audio systems. In marine applications, these circuit breakers provide crucial protection for batteries and alternators while reducing the risk of dangerous fires caused by short circuits. Additionally, high amperage circuit breakers are critical in DC audio systems, ensuring safe operation by preventing overloads. They are also vital for protecting machinery and large-scale electrical equipment used in manufacturing, construction, and mining.

 

FAQs

How do I reset a High Amperage Circuit Breaker?

Depending on your circuit breaker style, there are two methods to reset an OptiFuse high amperage circuit breaker:

Type I: These breakers automatically reset themselves once the bimetallic element has cooled down and cannot be reset manually.

Type III: When tripped, the lever on the top of the breaker will pop out. To reset the breaker, simply push the lever back into the case. If you want to manually open the breaker, press the button located on the top. This will cause the lever to pop out, indicating that the electrical connection within the breaker has been interrupted.

 

How is a high amperage heavy-duty circuit breaker installed?

High amperage heavy-duty circuit breakers can be installed using two methods: panel mount and surface mount.

Panel Mount: For panel mount circuit breakers, cables are connected to terminals located on the backside of the breaker. This installation method allows the breaker to be securely fixed to a panel or enclosure, providing a clean and organized appearance.

Surface Mount: For surface mount breakers, cables are connected to the two studs located on the front side of the breaker. This method offers easy access for wiring and is ideal for applications where quick installation and maintenance are essential.

 

Where should I mount my circuit breaker?

Where to mount your circuit breaker depends on various factors, including your application, available space, and the specific model in use.

For panel mount circuit breakers, you should identify a suitable location within a panel for installation. Surface mount circuit breakers offer more flexibility and can be placed in any appropriate location for your application.

Type III circuit breakers should be mounted in easily accessible areas since they require physical access for resetting after tripping. In contrast, Type I circuit breakers can be located in harder-to-reach spots, as they automatically reset and do not require manual intervention.