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

 

This 120A circuit breaker combines functions of a resettable 120A fuse and on/off switch in one unit. It is ideal for any DC system that requires both overcurrent protection and manual isolation of the circuit. 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 overcurrent as a result of high power draw, short-circuits, wiring mistakes, equipment faults or any other high current event. The circuit breaker is resettable which makes it a superior alternative to fuses which require replacement when blown.

Additionally, the breaker has a manual-break option which allows it to be used as an isolator on/off switch for simple disconnection and reconnection of the system.

The circuit breaker is made 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;


• Sitting between off-grid inverter DC input and batteries;


• DC power distribution or charging circuits;


• Other DC automotive and marine applications.

Click on the Details and Specifications tab for more information.

-

 
-

-

Circuit breaker specifications:

-

-
• Rating: 120A

-
• Type: Thermal overcurrent protection device

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

-
• Operating temperature:
  - 32C to 82C

-
• Storage temperature:
  - 34C to 149C

-
• 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 panel or recess mounting.

 

The following documents are available to download:

Time vs Rated Current graph for Photonic Universe 120A Circuit breaker (CBR120)

Temperature derating graph for Photonic Universe 120A Circuit breaker (CBR120)