50A 12V/24V/48V Automatic over-current DC circuit breaker / switch

Please make a note of the following information:

This circuit breaker is a 50A 12V/24V/48V automatic over-current DC circuit breaker/switch. It combines the functions of a resettable 50A fuse and an On/Off switch in one unit. It is suitable for any DC system that requires both over-current protection and manual isolation of the circuit, and can be used with a wide range of DC system voltages from 12V to 48V.

Like a fuse, this circuit breaker is designed to protect the system from over-current events caused by high power draw, short-circuits, wiring mistakes, equipment faults, or any other high current event.

The circuit breaker is resettable, making it a superior alternative to fuses which require replacement when blown. It also has a manual-break option, allowing it to be used as an isolator On/Off switch for simple disconnection and reconnection of the system.

Constructed from strong thermal plastic engineered to withstand high temperatures (UL94V-0 rated), the breaker is also water-resistant (IP67 rated) and ignition protected (meets international standards S.A.E. J1625, J1171, UL1500).

This product is suitable for a wide range of 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.

Circuit breaker specifications:

- Rating: 50A

- 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.

You can also download the following documents:

- Time vs Rated Current graph for Photonic Universe 50A Circuit breaker (CB50)

- Temperature derating graph for Photonic Universe 50A Circuit breaker (CB50)