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Indoor high-voltage vacuum circuit breaker series
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High-load switch series
Active filtering and reactive power compensation series
Circuit breaker component design and modification
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Overview Culture Style Development
Products
Indoor high-voltage vacuum circuit breaker series Microcomputer Protection Device Series Low-voltage product series Thermal overload relay series Multifunctional Instrument and Power Monitoring System Solution Three-position electrical appliance series Outdoor High Voltage Vacuum Circuit Breaker Series High-load switch series Active filtering and reactive power compensation series Circuit breaker component design and modification
Solution
Rail transit New energy power generation Petrochemical Metallurgical smelting Power transmission and distribution network Industrial Control Systems Commercial buildings Residential power distribution
News
New Dynamic
Service
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product center

Three-position electrical appliance series

Indoor high-voltage vacuum circuit breaker series
- VTX-3ASi series
Microcomputer Protection Device Series
Low-voltage product series
- Miniature circuit breaker series - Molded Case Circuit Breaker Series - Frame circuit breaker series - Dual power supply series - AC contactor series
Thermal overload relay series
Multifunctional Instrument and Power Monitoring System Solution
Three-position electrical appliance series
Outdoor High Voltage Vacuum Circuit Breaker Series
High-load switch series
Active filtering and reactive power compensation series
Circuit breaker component design and modification
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Three-position electrical appliance series

introduction

The three-position switch (3PS) is a core control device in power systems, integrating closing, isolation, and grounding functions to achieve safe circuit switching through a single operation. Its visible break design of over 20mm ensures maintenance safety, supports high breaking capacity (150kA+), and is widely used in substations and rail transit to ensure reliable operation and continuous system operation.

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