Switch for DC voltage protection | 300A | 12-48VDC | DaierTek
Code: ECB-03-300AThe 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.
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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.This product is marked with the CE label, which confirms that it complies with all applicable European Union directives and regulations. CE marking is not just a formality – it is an important indicator of quality and safety, ensuring that the product has been properly assessed, tested, and can be safely used throughout the EU market.
CE certification means that the product has been evaluated according to the main criteria:
Safety requirements – ensures that the product does not pose a risk to the user or the environment
Electromagnetic compatibility (EMC) – the device does not interfere with other equipment and is resistant to external disturbances
Environmental standards – complies with current ecological and material usage requirements
Operational reliability – the product is suitable for long-term use according to its intended purposeCE marking allows this product to:
be legally supplied and used in all European Union countries
ensure a high level of quality and safety
be used in residential, commercial, and industrial environmentsThe CE mark is a declaration of the manufacturer’s responsibility, confirming that the product complies with all applicable standards and has been assessed according to EU legislation.
What does this mean for you as a buyer?
Safe use in everyday activities
Reliable performance and reduced risk of failure
Compliance with EU standards and requirements
Suitability for professional solutions
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