Products catalog

  • Switch for DC voltage protection | 300A | 12-48VDC | DaierTek

    Code: ECB-03-300A

    The DC circuit breaker is a reliable solution for protecting electrical systems against overcurrent and overvoltage. Designed for use in 12–48 VDC systems, it is ideal for cars, buses, RVs, trucks, boats, solar panel systems, audio amplifiers, and other DC-based installations.

    The device is resistant to water and dust and features a convenient manual reset mechanism, making it suitable for use as a protective switch. It is designed for surface mounting — on a panel or partition. 

  • Technical specifications:

    Rated current: 300 A

    Operating voltage: 12–48 VDC

    Protection class: Dustproof and splash-proof

    Reset type: Manual

    Mounting: Surface mounting (on panel or bulkhead)

    Housing: Waterproof, comes with protective screw caps

    Application: Cars, RVs, trucks, buses, boats, ATV winches, solar systems, audio amplifiers, and other DC equipment

    Functions:

    Protects devices from overcurrents and electrical shocks

    Prevents failures due to overcurrent and surges

    Can be used as a main disconnect switch

    Manual reset – allows easy and quick system reactivation after a protective shutdown

    Outdoor-resistant – safe for marine or harsh environments

    Compact design and easy installation

    Applications:

    Car audio and video systems

    Boat electrical installations

    Truck and bus electrical systems

    RV and camper electrical protection

    Solar energy modules and DC control systems

    ATV winch protection solutions

    Protection on fishing boats

    Pros:

    Robust construction, resistant to water and dust

    Versatile use in various DC systems

    Manual reset function – no need to replace fuses

    Suitable for emergency disconnection

    Simple panel or bulkhead installation

    Cons:

    Not intended for use in AC systems

    Requires proper installation to ensure full sealing 

    Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.
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