120A 12V/24V/48V Automatic over-current DC circuit breaker / switch - 4Boats
120A 12V/24V/48V Automatic over-current DC circuit breaker / switch - 4Boats
120A 12V/24V/48V Automatic over-current DC circuit breaker / switch - 4Boats

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


  • Dispatched in 2-3 days
  • 30 Day Return Policy
  • In stock, ready to ship
  • Backordered, shipping soon
Our stock levels are dynamic and can change frequently. If a product appears to be in stock, it may have already sold out. Please contact us if you have any questions about availability. Thank you for your understanding.

Regular price£24.99
Tax included.

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

This?ÿ120A circuit breaker?ÿcombines the functions of a?ÿresettable 120A fuse?ÿand an?ÿOn/Off switch?ÿin one unit.?ÿIt 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?ÿas 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?ÿignition 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;
  • 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:?ÿ 110g
  • Waterproof rating: IP67
  • International standard ratings (S.A.E. J1625, J1171, UL1500)

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

For the products under £150 the shipping is £6.99.

Free delivery for the most items over £150.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Recently viewed

Customer Reviews

Be the first to write a review

Why choose us

Untitled_1080_x_1080_px_1 - 4Boats


We source the best products from the Top suppliers only. We’ve taken years of feedback and have doubled down on providing the best service.

Untitled_1080_x_1080_px_2 - 4Boats


Our Suppliers and Partners are joining us in our commitment to challenge the way this industry operates. From product sourcing to fulfilling, they’re the best in the business.

Simple_Image_Play_Built_into_Routine_Cosmetics_TikTok_In-Feed_Ad_1080_x_1080_px_10 - 4Boats


All your orders are personally checked by a member of 4 BOATS and we make sure your orders are dispatched quickly so it arrives to your doorstep ASAP