Introducing the 120A 12V/24V/48V Automatic Over-Current DC Circuit Breaker/Switch. This circuit breaker combines the functions of a resettable 120A fuse and an On/Off switch in one unit. It is ideal for any DC system that requires both over-current protection and manual circuit isolation.

The breaker is suitable for a wide range of DC system voltages from 12V to 48V. Like any fuse, this circuit breaker is designed to protect the system from over-current events such as high power draw, short-circuits, wiring mistakes, equipment faults, and other high-current events. The circuit breaker is resettable, making it a superior alternative to fuses that require replacement when blown. Additionally, the breaker has a manual-break option that allows it to be used as an isolator On/Off switch for simple disconnection and reconnection of the system. It is made from strong thermal plastic engineered to withstand high temperatures (UL94V-0 rated) and is also water-resistant (IP67 rated) and ignition protected (meets international standards S.A.E. J1625, J1171, UL1500).

Please remember the information below. This product is suitable for various DC applications, including connecting solar or wind charge controllers to batteries, between off-grid inverter DC input and batteries, DC power distribution or charging circuits, and other DC automotive and marine applications. For more details and specifications, click on the Details and Specifications tab. The circuit breaker specifications are as follows:

- Rating: 120A

- Type: Thermal overcurrent protection device

- Material: Thermal plastic (UL-rated 94V-0)

- Operating temperature: -32°C to 82°C

- Storage temperature: -34°C to 149°C

- Terminals size: M6

- Enclosure: IP67

- Size: 74 x 48 x 37 mm

- Weight: 110g

- Waterproof rating: IP67

- International standard ratings (S.A.E. J1625, J1171, UL1500)

Please note that this circuit breaker is intended for surface mounting.

120A 12V/24V/48V Automatic over-current DC circuit breaker / switch