The 40.5kV Wind and Solar Vacuum Circuit Breaker from Dongfa Intelligent is designed for 40.5kV switching and distribution applications in wind power, solar power, energy storage, and other new energy systems. The product uses a vacuum interruptor and spring operating mechanism, with rated current options of 630A and 1250A and rated short-circuit breaking current options of 20kA, 25kA, and 31.5kA. The mechanical life of the circuit breaker is 10,000 operations, with AC/DC 220V or 110V operating mechanism voltage options.
The 40.5kV Wind and Solar Vacuum Circuit Breaker has a mechanical life of 10,000 operations. The rated operating sequence is O-0.3s-CO-180s-CO, providing the operating sequence required for the specified switching conditions.
The opening time is 20-50ms, while the average opening speed during the first 12mm is 1.0-1.8m/s. Contact closing bounce is ≤5ms and contact closing/opening asynchronism is ≤2ms.
The spring operating mechanism supports AC/DC 220V and 110V, allowing the operating voltage to be matched with the control circuit configuration of the corresponding switchgear system.
| Parameter | Specification |
| Product Type | Wind and Solar Vacuum Circuit Breaker |
| Rated Voltage | 40.5kV |
| Rated Frequency | 50Hz |
| Rated Current | 630A-1250A |
| Rated Short-Circuit Breaking Current | 20kA / 25kA / 31.5kA |
| Rated Short-Time Withstand Current / Time | 20-31.5kA / 4s |
| Rated Peak Withstand Current | 50kA-80kA |
| Power-Frequency Withstand, 1min | 95kV / 118kV (Phase/Earth / Isolation Gap) |
| Lightning Impulse Withstand | 185kV / 215kV |
| Control Circuit Power-Frequency Withstand, 1min | 2kV |
| Rated Operating Sequence | O-0.3s-CO-180s-CO |
| Mechanical Life | 10,000 operations |
| Spring Operating Mechanism Voltage | AC/DC 220V, 110V |
| Parameter | Specification |
| Contact Gap | 18±2mm |
| Over-Travel | 6±2mm |
| Closing Time | 30-70ms |
| Contact Closing Bounce | ≤5ms |
| Contact Closing/Opening Asynchronism | ≤2ms |
| Average Closing Speed, Last 6mm | 0.6-1.3m/s |
| Opening Time | 20-50ms |
| Average Opening Speed, First 12mm | 1.0-1.8m/s |
For a 40.5kV Wind and Solar Vacuum Circuit Breaker, the rated voltage is 40.5kV and the rated current range is 630A-1250A. Selection should be based on the voltage and load current requirements of the corresponding system.
The available rated short-circuit breaking current options are 20kA, 25kA, and 31.5kA. The required value should be confirmed according to the short-circuit level of the installation.
Before selecting the Breaker, confirm the required AC/DC operating voltage, switchgear dimensions, phase spacing, mounting interface, and other installation conditions.
For replacement or retrofit projects, the existing equipment information can be used to confirm the suitable configuration. The required information may include the original circuit breaker model, nameplate, mounting dimension drawing, switchgear model, rated current, short-circuit breaking current, operating voltage, and required quantity.
The 40.5kV Wind and Solar Vacuum Circuit Breaker can be used in 40.5kV switching and distribution sections of wind power systems where the specified voltage, current, and short-circuit parameters are required.
For photovoltaic power generation systems, the circuit breaker can be configured according to the 40.5kV system voltage, rated current, short-circuit level, control voltage, and switchgear installation requirements.
The product is also applicable to 40.5kV switching and distribution applications associated with energy storage and distributed new energy systems, subject to the project electrical and installation parameters.
The company is located in Yueqing Economic Development Zone, Wenzhou, Zhejiang, with an area of more than 2,000m². It has 17 employees, including 4 technical and R&D personnel, with 2 production lines and 1 testing equipment set. Monthly production capacity is 600-700 units, with annual capacity of 7,000-8,000 units.
Dongfa Intelligent operates under ISO 9001, ISO 14001, and ISO 45001 management systems. Product testing can include resistance testing, mechanical operation testing, power-frequency withstand testing, and vacuum degree inspection according to product requirements.
For 40.5kV Wind and Solar Vacuum Circuit Breaker projects, configuration can be confirmed according to rated current, short-circuit breaking requirements, operating mechanism voltage, mounting dimensions, and switchgear information. Technical questions are targeted for a response within 1 working day, while after-sales issues can be initiated within 24 hours. OEM/ODM support is available according to drawings and technical requirements.
Standard products have a lead time of 7-15 working days, while customized products require 15-30 working days. The standard MOQ is 1 unit. Product documents and customization requirements can be confirmed according to the project configuration.
Dongfa Intelligent supplies high-voltage electrical equipment to Southeast Asia and parts of Europe. The 40.5kV Wind and Solar Vacuum Circuit Breaker can be configured and documented according to the electrical and installation requirements of overseas new energy and power distribution projects.
The rated voltage is 40.5kV, with a rated frequency of 50Hz.
The rated current range is 630A-1250A.
The available rated short-circuit breaking current options are 20kA, 25kA, and 31.5kA.
It refers to the mechanical life of the circuit breaker, specified as 10,000 operations under the corresponding operating conditions.
The spring operating mechanism supports AC/DC 220V and 110V.
The original model, nameplate, mounting dimensions, switchgear information, rated current, short-circuit breaking current, operating voltage, and required quantity can be provided for configuration confirmation.
Standard products typically require 7-15 working days, while customized products require 15-30 working days. The final lead time is confirmed according to the product configuration.
For a 40.5kV Wind and Solar Vacuum Circuit Breaker selection request, provide the required rated current, short-circuit breaking current, operating mechanism voltage, switchgear model or mounting dimensions, and quantity. Dongfa Intelligent can use these technical details to confirm the applicable product configuration.
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No. 281, Wei 18th Road, Yueqing Economic Development Zone, Yueqing, Wenzhou, Zhejiang, China
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