Pole Mounted Vacuum Circuit Breaker

Pole Mounted Vacuum Circuit Breaker for Reliable Overhead Distribution Networks

Modern utilities require switching equipment that is not only reliable during fault interruption but also easy to install, operate, and maintain throughout its service life. Our Pole Mounted Vacuum Circuit Breaker is specifically developed for medium-voltage overhead distribution systems where installation space is limited and uninterrupted power supply is essential. Built around maintenance-free vacuum interruption technology, it provides dependable protection for utility feeders, industrial parks, renewable energy projects, mining facilities, and rural electrification networks.

This product family also includes the 12KV Pole Mounted Circuit Breaker, the intelligent 12KV Automatic Recloser Circuit Breaker, the weather-resistant 12KV Outdoor Vacuum Circuit Breaker, and the compact Outdoor Pole Top Circuit Breaker, allowing utilities to standardize equipment across complete overhead distribution networks while reducing spare parts inventory and maintenance complexity.

Designed for Faster Installation and Lower Lifecycle Cost

Unlike conventional outdoor switchgear requiring complex foundations, the Pole Mounted Vacuum Circuit Breaker is engineered for direct installation on concrete poles, steel poles, or H-frame structures. Its lightweight modular construction shortens installation time while reducing lifting equipment requirements. Factory-adjusted operating mechanisms eliminate on-site calibration, helping EPC contractors complete commissioning faster and reducing labor costs.

The sealed vacuum interrupter completely removes the need for insulating oil or SF6 gas handling. Combined with corrosion-resistant stainless steel operating cabinets and UV-resistant polymer insulation, the breaker requires only routine visual inspection throughout most of its operating life. This significantly lowers scheduled maintenance expenses while improving long-term network reliability.

Main Advantages

Optimized for overhead distribution lines, substations, renewable energy plants and industrial feeders
Factory-assembled structure minimizes installation and commissioning time
Maintenance-free vacuum interrupter eliminates oil replacement and gas leakage inspections
Compact pole-mounted design reduces civil engineering costs
Excellent resistance to humidity, dust, salt fog and heavy industrial pollution
Supports local manual operation and remote electrical control
Compatible with distribution automation systems, RTUs and SCADA platforms
Long mechanical service life helps reduce total ownership cost

Advanced Construction Features

Design Element	Engineering Advantage	Customer Benefit
Vacuum Interrupter Technology	High-speed arc extinction inside sealed vacuum chambers without oil or SF6 insulation media	Lower maintenance requirements and improved environmental compliance
Solid Insulated Epoxy Pole Structure	Phase-to-phase insulation is integrated into compact epoxy resin housings with excellent dielectric strength	Reliable operation in polluted, humid and coastal environments
Outdoor Stainless Steel Control Cabinet	Weather-resistant enclosure protects control components against dust, rain and corrosion	Longer equipment lifespan and reduced field maintenance
Magnetic Actuator / Spring Operating Mechanism	Provides stable opening and closing performance with low operating energy requirements	Suitable for remote locations with limited auxiliary power supply
Integrated Current Sensing System	Optional CTs and sensors provide real-time electrical monitoring	Improves fault detection and supports smart grid operation
Remote Communication Capability	Supports IEC 61850, DNP3 and Modbus communication protocols	Easy integration with SCADA and distribution automation systems

Typical Applications

The Pole Mounted Vacuum Circuit Breaker is widely used in medium-voltage distribution systems where reliability, accessibility and fast fault isolation are critical.

Utility Distribution Networks: Protects overhead feeders and improves grid stability by quickly isolating short circuits.
Renewable Energy Projects: Provides reliable switching protection for solar farms, wind power plants and distributed generation systems.
Industrial Power Systems: Ensures safe operation of factories, mining facilities and large commercial facilities with medium-voltage loads.
Rural Electrification Projects: Offers economical protection solutions for long-distance distribution lines where maintenance access is limited.
Smart Grid Applications: Supports remote monitoring, automatic fault management and intelligent power restoration.

Technical Specifications

Parameter	Specification
Rated Voltage	12 kV
Rated Frequency	50 / 60 Hz
Rated Current	630 A / 1250 A
Rated Short Circuit Breaking Current	20 kA / 25 kA
Rated Peak Withstand Current	50 kA / 63 kA
Short-Time Withstand Current	20 kA / 25 kA for 3 seconds
Mechanical Endurance	10,000 operating cycles
Electrical Endurance	30 full short-circuit interruptions
Operating Mechanism	Magnetic actuator or motor-charged spring mechanism
Insulation System	Vacuum interrupter + solid epoxy insulation
Protection Degree	IP55 outdoor enclosure
Operating Temperature	-40°C to +55°C
Control Voltage	24 / 48 / 110 / 220 V DC
Communication Options	IEC 61850 / DNP3 / Modbus
Applicable Standards	IEC 62271-100, IEC 62271-111, ANSI C37.60

Hot Products

126KV Outdoor SF6 Circuit Breaker
Anqiang Power's independently developed 126KV outdoor SF6 circuit breaker boasts superior quality, and the company has a dedicated production workshop for sulfur hexafluoride circuit breakers. This is an outdoor high-voltage circuit breaker with a rated voltage of 126KV and a rated frequency of 50Hz, using sulfur hexafluoride gas as the insulation and arc-extinguishing medium.
11KV Oil Immersed Transformer
Anqiang Power is a China factory specializing in 11KV oil immersed transformers. The rated capacity of these oil-immersed transformers can be customized according to customer requirements, ranging from 30KVA to 2500KVA. The products feature high efficiency and low loss, saving significant electricity consumption and operating costs. They are widely used in power grid upgrades, substations, petrochemical industries, and ring network construction projects.
27.5kV Outdoor High Voltage Circuit Breaker
The 27.5kV outdoor high voltage circuit breaker is a power station switchgear independently developed by Anqiang Power. It is used in three-phase AC power systems with a frequency of 50Hz and a voltage of 27.5kV, for switching on and off load current, overload current, and short-circuit current. We can also customize it according to the user's rated voltage parameters.
Outdoor High Voltage Disconnect Switch
Anqiang Power's Outdoor High Voltage Disconnect Switch are commonly used equipment in power systems. Their main function is to isolate voltage during equipment or line maintenance to ensure safety. They cannot interrupt load current or short-circuit current and should be used in conjunction with circuit breakers. When shutting down power, the circuit breaker should be opened first, followed by the disconnect switch; when restoring power, the disconnect switch should be closed first, followed by the circuit breaker.
Oil Immersed Electromagnetic Voltage Transformer
Anqiang Power is a China supplier of oil immersed electromagnetic voltage transformers. This voltage transformer is an outdoor, single-phase, single-stage type, suitable for power systems with a rated frequency of 50Hz or 60Hz and a rated voltage of 66KV-220KV, for use in voltage and energy measurement and relay protection.
12kV Withdrawable Indoor Circuit Breaker
The 12KV withdrawable indoor circuit breaker is a best-selling product series of Anqiang Power. It is suitable for indoor switchgear with three-phase AC 50Hz and a rated voltage of 12KV. It is generally used for the control and protection of industrial and mining enterprises, power plants and substations, and electrical facilities, and is also suitable for applications requiring frequent operation.

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Pole Mounted Vacuum Circuit Breaker