The Chint NM8NDC – 125H photovoltaic molded case circuit breaker is a DC molded case circuit breaker specially designed for photovoltaic systems. It is suitable for scenarios with a DC voltage level of up to 1000V, has a rated current of 125A, and features high breaking capacity as well as reliable overload and short – circuit protection functions. The following is a collation of key information:
Ⅰ. Technical Parameters and Performance
- Voltage and Current SpecificationsChint NXBLE-40C6 residual current circuit breaker (RCCB)
This circuit breaker is applicable to DC systems with a rated voltage of DC 1000V and below, and a rated current of 125A, conforming to the IEC 60947 – 2 standard. Its breaking capacity can reach Ics = 100% Icu (the operational breaking capacity is equal to the ultimate breaking capacity), enabling it to safely cut off fault currents.
- Environmental AdaptabilityChint NXR series thermal overload relays price
With an operating temperature range of – 40°C to + 70°C, it can adapt to harsh environments such as high temperatures and high altitudes, meeting the outdoor installation requirements of photovoltaic power stations.
- Structural DesignCHINT circuit breaker price
Adopting a modular design, it supports vertical or horizontal installation. The internal accessories can be flexibly replaced, facilitating maintenance. Some models (such as the NM8N HV series) also have the zero arcing characteristic, suitable for high – voltage scenarios.
Ⅱ. Applications in Photovoltaic Systems
- Core FunctionsCHINT surge protector price
DC Protection: Specifically designed for the DC side of photovoltaic systems, it can effectively protect equipment such as inverters and combiner boxes from overload and short – circuit damage.
Arc Prevention Capability: By optimizing the arc – extinguishing structure, it reduces the risk of arcing, in line with the high – safety requirements of photovoltaic systems.
Compatibility: It supports the use with special photovoltaic cables and connectors and is compatible with the interfaces of mainstream inverters.
- Certifications and Standards
– Comply with the IEC 60947 series of standards, and some models have passed CE certification.
– Although UL certification is not explicitly mentioned, other photovoltaic products of Chint (such as energy storage systems) have passed international certifications such as TÜV Süd, which can indirectly reflect its quality control level.
Ⅲ. Procurement and Selection Suggestions
- Price Reference
The price in the domestic market is approximately 456 to 1188 RMB, specifically varying according to channels and configurations (such as the number of poles and accessories). For the North American market, inquiries need to be made through local dealers. It is recommended to contact Chint’s overseas branches or authorized agents.
- Selection Considerations
Voltage Matching: Ensure that the DC voltage level (DC 1000V) of the circuit breaker is consistent with the design voltage of the photovoltaic system.
Breaking Capacity: Select an appropriate breaking capacity (such as 50kA or higher) according to the short – circuit current level of the system.
Accessory Expansion: It can be equipped with accessories such as auxiliary contacts and undervoltage release devices to achieve remote monitoring or intelligent protection.
Ⅳ. Adaptability to the North American Market
- Certifications and Compliance
At present, public information does not clearly state whether the NM8NDC – 125H has passed UL certification. If used in North American projects, it is recommended to directly contact Chint to confirm whether the product complies with standards such as UL 489 or UL 1699B, or consider its HV series (specially designed for high – voltage photovoltaics, supporting AC 1150V).
- Purchase Channels
North American users can consult dealers via WhatsApp: 0086 – 13811255435 or submit inquiries through the industrial e – commerce platform www.transformerandswitchgear.com.
Technical Support: For customized solutions or system integration suggestions, you can contact Chint New Energy’s technical team to obtain an overall solution for photovoltaic system protection.
Summary
The Chint NM8NDC – 125H is a cost – effective photovoltaic DC circuit breaker, suitable for overload and short – circuit protection in systems below 1000V. Domestic users can purchase through e – commerce platforms or dealers, while North American users need to focus on confirming certifications and supply channels. If higher voltage or North American – compliant products are required, the HV series can be considered or the manufacturer’s technical support can be consulted.
