2P 500V 16A DC Miniature Circuit Breaker

The 2P 500V 16A DC miniature circuit breaker is a miniature protection device independently developed and manufactured by us to meet the protection needs of DC circuits. It belongs to the GreenWatt supplier DC circuit breaker series. Unlike AC circuit breakers, this product is specifically adapted to the constant current and zero-crossing characteristics of DC circuits. Its optimized arc-extinguishing structure allows for rapid disconnection of abnormal circuits such as overloads and short circuits, preventing equipment damage and safety hazards. The 2-pole design allows simultaneous disconnection of both poles, ensuring safe isolation of the DC system. The combination of a 16A rated current and a 500V rated voltage precisely matches the usage requirements of small photovoltaic systems, DC control cabinets, and communication DC power supplies, making it an indispensable basic protection component in DC power distribution.

Key Product Features

1. Precise Protection, Safe and Reliable

The GreenWatt 2P 500V 16A DC miniature circuit breaker features precise overload and short-circuit protection. When the current in the circuit exceeds the rated value of 16A, the product will automatically trip, cutting off the circuit. In the event of a short-circuit fault, it can respond quickly, avoiding the safety risks caused by continuous arcing. The product has optimized tripping characteristics, which can flexibly trigger protection according to abnormal circuit conditions. It will not trip falsely due to instantaneous current fluctuations, nor will it cause equipment damage due to response delays, providing comprehensive protection for DC circuits and equipment. The protection performance of this product has undergone rigorous testing and meets multiple international and domestic certification standards such as CE, CB, TUV, and CCC, making it safe for use in various DC scenarios.

2. Compact Design, Easy Installation

The GreenWatt 2P 500V 16A DC miniature circuit breaker adopts a miniature structure design, making it compact and easily embedded in electrical cabinets and distribution boxes with limited space. It is especially suitable for use in scenarios with dense components, such as photovoltaic systems. The product supports standard DIN rail mounting, requiring no complex tools. Simply slide the product to the designated position on the rail and secure it, significantly improving installation efficiency and reducing labor costs. Furthermore, the product's U-shaped terminal block design allows for flexible wiring to accommodate various copper wire specifications, meeting the wiring needs of different scenarios.

3. High Durability and Wide Compatibility

In manufacturing the GreenWatt 2P 500V 16A DC miniature circuit breaker, we use high-quality flame-retardant materials and superior conductive components, possessing excellent high-temperature resistance, moisture resistance, and corrosion resistance, making it suitable for various complex environments, including industrial and outdoor applications. The product boasts a mechanical life of up to 20,000 cycles and an electrical life of up to 10,000 cycles, ensuring stable long-term operation and requiring minimal maintenance, effectively reducing user costs. This product is widely applicable, suitable for small photovoltaic arrays, DC communication power supplies, DC control cabinets, small DC motor protection, etc., making it a highly versatile DC miniature circuit breaker.

Technical Advantages

I. Optimized Arc Extinguishing Structure

Addressing the characteristics of DC circuits—no natural zero-crossing point and long arc duration—the GreenWatt 2P 500V 16A DC miniature circuit breaker features a structurally upgraded internal arc extinguishing system. By increasing the arc chamber space, optimizing contact spacing, and incorporating a magnetic blow-out arc-initiating design, the arc can be rapidly drawn into the arc-extinguishing grid and cooled in stages after formation, thereby shortening the arcing time, reducing contact erosion, and improving the stability of the breaking process.

II. More Precise Tripping Control

This product employs a thermomagnetic tripping principle. Under overload conditions, it achieves delayed breaking through a thermal element; under short-circuit conditions, it achieves instantaneous tripping through a magnetic system. Internal parameters are rigorously calibrated, remaining stable under slight current fluctuations to minimize false tripping, while providing rapid response under severe overload or short-circuit faults, balancing protection sensitivity and operational stability.

III. Safety and Environmentally Friendly Material Design

The GreenWatt 2P 500V 16A DC miniature circuit breaker uses materials compliant with RoHS 2.0 standards. The housing is made of flame-retardant engineering plastic, improving safety performance in high-temperature environments. The optimized terminal structure ensures tighter contact, effectively reducing contact resistance and temperature rise, minimizing potential risks during long-term operation.

IV. Modular Expansion Capability

This model adopts a modular structure, allowing for the expansion of auxiliary or alarm contacts according to system requirements, enabling remote signal feedback or status monitoring functions. The modular design facilitates future maintenance and upgrades, and allows for flexible combination in different projects, enhancing the overall system's adaptability.