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The BB1-63 series 10A 600V DC circuit breaker is a protection device specially designed for direct current photovoltaic installations. This miniature bipolar circuit-breaker (2P) provides essential triple protection: against overload, short-circuit and reverse current.
With its rated voltage of 600V DC and rated current of 10A, it is ideal for protecting small- to medium-power residential solar installations. Its 6 kA breaking capacity and thermomagnetic type B tripping curve guarantee reliable, reactive protection in the event of an electrical fault.
Designed to fit into DC solar cabinets, controllers and junction boxes, this compact circuit-breaker benefits from an optimised arc extinguishing system, crucial for DC safety. Its extended temperature range (-25°C to +70°C) means it can be used in a variety of environmental conditions.
Compliant with IEC 60947-2 / GB14048.2 standards, this circuit-breaker offers IP40 protection on all sides and accepts cable cross-sections from 2.5 to 25 mm². Ideal for securing your solar panel strings, protecting your inverters and guaranteeing the reliability of your photovoltaic installation.
Standard DIN rail mounting. Long mechanical life: 20,000 cycles. Sold individually.
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The BB1-63 series 10A 600V DC circuit breaker is an electrical protection device specially developed to meet the stringent requirements of DC photovoltaic installations. Unlike standard AC circuit breakers, this model incorporates specific technologies to safely manage the particularities of DC current generated by solar panels.
This miniature two-pole circuit breaker provides three essential protection functions to guarantee the safety and reliability of your photovoltaic installation:
The BB1-63 circuit-breaker has electrical characteristics specifically optimised for DC solar applications:
One of the major characteristics of direct current compared with alternating current is the difficulty of breaking an arc. Unlike alternating current, which naturally passes through zero 100 times per second (at 50 Hz), direct current maintains a stable arc that can persist and damage the circuit-breaker contacts.
The BB1-63 circuit-breaker incorporates an arc extinguishing system specifically designed for DC current, using an extinguishing chamber with metal grids that effectively split, cool and extinguish the arc when the contacts are opened. This scientific design guarantees safe, rapid disconnection, which is essential for protecting photovoltaic installations.
An effective arc extinguishing system is crucial to maintaining a safer solar system and extending the life of the DC circuit breaker.
The DC 10A 600V circuit breaker can be used in a wide range of photovoltaic installation configurations:
To understand how to correctly integrate this circuit breaker into your installation, consult our detailed connection diagrams available on our website.
The 10A rating is particularly suitable for the following installations:
To correctly size your protections and cables, use our voltage drop calculator available free of charge in the Wattuneed toolbox.
Designed for intensive use, the BB1-63 circuit-breaker offers excellent durability:
These values demonstrate the superior robustness of this circuit breaker compared with market standards, guaranteeing reliable long-term protection with minimum maintenance.
The BB1-63 circuit-breaker is designed for easy integration into your existing electrical enclosures:
The circuit-breaker supports a wide operating temperature range (-25°C to +70°C), enabling it to be installed in a variety of environments, including outdoors in a suitable enclosure. The storage temperature ranges from -40°C to +85°C.
The BB1-63 circuit-breaker complies with current international standards for DC protection equipment:
These certifications guarantee the quality, reliability and safety of the product for use in professional electrical installations.
For complete protection of your solar array, the DC circuit-breaker should be used in conjunction with other safety devices:
Discover our complete range of DC protection enclosures and photovoltaic surge protectors to provide effective protection for your installation.
To ensure the correct operation and long life of your DC circuit breaker :
The DC 10A 600V circuit breaker is sold individually, ready to be installed on a standard DIN rail in your photovoltaic protection cabinet.
If you have any technical questions about sizing your DC protection, compatibility with your solar installation, or advice on choosing the right rating, our support team is at your disposal at support.wattuneed.com.
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