Zhejiang Dongfa Intelligent Electrical Technology Co., Ltd. is a China-based manufacturer of the 12kV Outdoor Pole-Mounted Vacuum Circuit Breaker. Designed for 12kV, 50Hz outdoor distribution systems, this breaker is used for circuit switching and short-circuit fault interruption on overhead lines and outdoor distribution points. Its pole-mounted structure is configured according to outdoor installation requirements, including support structure, electrical connections, grounding, and control interfaces.
The breaker is developed specifically for outdoor pole-mounted installation rather than adapting an indoor breaker for outdoor use. Its installation configuration can be matched with the support structure and connection arrangement of the distribution system.
The mechanical life reaches 30,000 operations, while the rated current breaking operations reach 10,000. This makes the breaker suitable for distribution systems requiring repeated switching during service.
630A and 1250A rated current options are available, with 16kA and 20kA short-circuit breaking capacities. The appropriate configuration can be selected according to the circuit load and system fault level.
12kV Outdoor Pole-Mounted Vacuum Circuit Breaker provides 42kV/48kV power-frequency withstand voltage and 75kV/85kV lightning impulse withstand voltage for the specified insulation points of the 12kV system.
| Parameter | Specification |
| Product Type | Outdoor Pole-Mounted Vacuum Circuit Breaker |
| Rated Voltage | 12kV |
| Rated Frequency | 50Hz |
| Rated Current | 630A / 1250A |
| Rated Short-Circuit Breaking Current | 16kA / 20kA |
| Rated Short-Time Withstand Current | 16kA / 20kA |
| Rated Peak Withstand Current | 40kA / 50kA |
| Rated Short-Circuit Making Current | 50kA |
| Rated Short-Time Withstand Duration | 4s |
| Power-Frequency Withstand Voltage | 42kV / 48kV |
| Lightning Impulse Withstand Voltage | 75kV / 85kV |
| Rated Operating Sequence | O-0.3s-CO-180s-CO |
| Rated Current Breaking Operations | 10,000 |
| Short-Circuit Current Breaking Operations | 50 |
| Mechanical Life | 30,000 operations |
| Secondary Circuit Power-Frequency Withstand Voltage | 2000V, 1 min, excluding electronic components |
The 12kV Outdoor Pole-Mounted Vacuum Circuit Breaker is suitable for utility distribution, overhead lines, industrial park distribution systems, mining power supply, and outdoor medium-voltage replacement projects.
Pole-mounted installation requires the support structure, mounting dimensions, electrical connections, grounding arrangement, and control system to be checked together. The installation details should be confirmed according to the actual site configuration.
For an existing installation, please provide the original breaker model, mounting dimension drawings, electrical parameters, operating requirements, and required quantity. These details can be reviewed before production to confirm compatibility.
One unit is acceptable for standard products. Standard products generally require 7-15 working days, while customized products generally require 15-30 working days.
OEM/ODM services are available for nameplates, packaging, manuals, and product configurations according to customer requirements.
For product selection, replacement, or configuration questions, the technical team provides a response within 1 working day after receiving the required project information.
The 12kV Outdoor Pole-Mounted Vacuum Circuit Breaker is produced within Dongfa Intelligent's established high-voltage electrical manufacturing system. The company has been engaged in this field since 2012 and operates its own factory in Yueqing Economic Development Zone, Wenzhou, Zhejiang, China. Production covers component assembly, complete equipment manufacturing, technical adjustment, and final inspection.
The factory covers more than 2,000m² and operates 2 production lines with 17 employees, including 4 technical and R&D personnel. The current production capacity is approximately 600-700 units per month, with annual capacity of around 7,000-8,000 units. One set of testing equipment is used for product inspection before shipment.
Each 12kV Outdoor Pole-Mounted Vacuum Circuit Breaker is subject to factory inspection before delivery. The inspection process includes:
Relevant test records can be provided upon request for project documentation and technical verification.
Dongfa Intelligent manufactures its high-voltage electrical products according to applicable GB and IEC requirements. Its quality management system is certified to ISO 9001, ISO 14001, and ISO 45001, with CNAS and IAF recognition associated with the certification system.
Key high-voltage product lines have also undergone type testing by the National High-Voltage Electrical Apparatus Quality Supervision and Inspection Center (Xi'an High-Voltage Apparatus Research Institute). The testing covers electrical performance, insulation levels, mechanical performance, and interrupting characteristics according to the applicable product standards.
Dongfa Intelligent's product range extends from high- and low-voltage electromagnetic coils to complete high-voltage electrical equipment, including indoor vacuum circuit breakers, outdoor isolating vacuum load switches, indoor load switches, and indoor and outdoor disconnect switches. This product experience supports the manufacturing and technical development of outdoor vacuum circuit breakers for 12kV distribution applications.
12kV Outdoor Pole-Mounted Vacuum Circuit Breaker is configured specifically for outdoor pole-mounted distribution systems, including its mounting arrangement and connection requirements.
The available rated current is 630A or 1250A, while the short-circuit breaking current is 16kA or 20kA. Selection depends on the circuit load and system fault level.
Please provide the original breaker model, mounting dimensions or drawings, electrical parameters, operating requirements, and quantity for compatibility review.
For the 12kV Outdoor Pole-Mounted Vacuum Circuit Breaker, one unit is acceptable for standard products. OEM orders can be discussed according to the project requirements.
Standard products generally require 7-15 working days, while customized products generally require 15-30 working days.
Address
No. 281, Wei 18th Road, Yueqing Economic Development Zone, Yueqing, Wenzhou, Zhejiang, China
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