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  • Ningbo Tianshun Electric Co., Ltd
  • Ningbo Tianshun Electric Co., Ltd
  • Ningbo Tianshun Electric Co., Ltd

Company Profile

Powering Progress with Reliable, Intelligent Electrical Solutions.

Tianshun Electric is a professional enterprise engaged in the research and development, production, and sales of high and low voltage switchgear and intelligent electrical products. With a team possessing over 20 years of experience in power transmission and distribution, we combine advanced engineering expertise with efficient management to provide comprehensive technical support across the entire lifecycle—from installation and commissioning to maintenance, training, and system upgrades. Our professional after-sales service team is committed to the principle of Rapid Response, Professional Maintenance.
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Power System
In power plants, substations, and transmission & distribution networks, our high and low voltage switchgear assemblies are used for power distribution, circuit protection, and fault isolation, ensuring safe and stable grid operation. Our products feature high reliability, intelligent monitoring, and remote operation capabilities, suitable for various voltage levels from 10kV to 35kV.
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Industrial Manufacturing
In steel, machinery, automotive, electronics and other industrial plants, our switchgear provides reliable power control and protection for production lines, large motors, and lighting systems. With high short-circuit withstand capability and modular design, our products are easy to maintain and expand, meeting the demanding requirements of continuous production.
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Building Construction
 In commercial complexes, hospitals, schools, and residential communities, our low voltage switchgear assemblies are used for building power distribution, fire pump control, elevator and HVAC power supply. With compact structure, safe operation, and support for intelligent power monitoring, our products contribute to building energy efficiency and electrical safety management.
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Transportation
In railways, subways, airports, ports, and EV charging stations, our switchgear is responsible for traction power supply, lighting distribution, and charger control. With vibration resistance, moisture and dust protection, our products adapt to complex transportation environments, ensuring 24/7 reliable operation of transportation facilities.
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Petrochemical Industry
 In refineries, chemical plants, and oil & gas pipelines, our explosion-proof high and low voltage switchgear is used for power distribution and motor control in hazardous areas. Our products comply with explosion-proof standards, featuring corrosion resistance, high sealing, and remote emergency stop functions, providing solid safety assurance for the petrochemical industry.
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New Energy
In wind farms, photovoltaic power stations, and energy storage stations, our switchgear is used for AC/DC side distribution, grid-connection protection, and system isolation. Our products support DC switching, intelligent reclosing, and wide-temperature operation, adapting to harsh outdoor environments, facilitating efficient integration of clean energy into the grid.
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Power System
In power plants, substations, and transmission & distribution networks, our high and low voltage switchgear assemblies are used for power distribution, circuit protection, and fault isolation, ensuring safe and stable grid operation. Our products feature high reliability, intelligent monitoring, and remote operation capabilities, suitable for various voltage levels from 10kV to 35kV.
VIEW MORE
Industrial Manufacturing
In steel, machinery, automotive, electronics and other industrial plants, our switchgear provides reliable power control and protection for production lines, large motors, and lighting systems. With high short-circuit withstand capability and modular design, our products are easy to maintain and expand, meeting the demanding requirements of continuous production.
VIEW MORE
Building Construction
 In commercial complexes, hospitals, schools, and residential communities, our low voltage switchgear assemblies are used for building power distribution, fire pump control, elevator and HVAC power supply. With compact structure, safe operation, and support for intelligent power monitoring, our products contribute to building energy efficiency and electrical safety management.
VIEW MORE
Transportation
In railways, subways, airports, ports, and EV charging stations, our switchgear is responsible for traction power supply, lighting distribution, and charger control. With vibration resistance, moisture and dust protection, our products adapt to complex transportation environments, ensuring 24/7 reliable operation of transportation facilities.
VIEW MORE
Petrochemical Industry
 In refineries, chemical plants, and oil & gas pipelines, our explosion-proof high and low voltage switchgear is used for power distribution and motor control in hazardous areas. Our products comply with explosion-proof standards, featuring corrosion resistance, high sealing, and remote emergency stop functions, providing solid safety assurance for the petrochemical industry.
VIEW MORE
New Energy
In wind farms, photovoltaic power stations, and energy storage stations, our switchgear is used for AC/DC side distribution, grid-connection protection, and system isolation. Our products support DC switching, intelligent reclosing, and wide-temperature operation, adapting to harsh outdoor environments, facilitating efficient integration of clean energy into the grid.
VIEW MORE

News and Information

  • 2026-04-08

    Maintenance of Low Voltage Circuit Breakers

    With the continuous development of science and technology and ongoing innovation in materials, the mechanisms of equipment have become more compact, durable, and have higher safety factors. Current equipment is evolving toward disassembly-free inspection and maintenance-free types. The following are inspection items for low voltage switches during system maintenance: a. Low voltage calibration of circuit breaker closing and tripping.b. Synchronization calibration of the circuit breaker.c. Primary DC resistance test.d. Primary insulation resistance test.e. Primary withstand voltage test.f. Adding lubricant to the transmission mechanism.g. Inspection and calibration of fuses.h. Inspection and calibration of the energy storage motor.i. Inspection of primary contacts and springs.j. Inspection and calibration of closing and tripping speed.k. Inspection and calibration of secondary circuits, auxiliary switches, and contacts.
    Ningbo Tianshun Electric Co., Ltd
  • 2026-04-08

    Maintenance of Knife Switches

    a. Inspection of fixed and movable blade contacts.b. Inspection of blade contact springs.c. Inspection of pivot pins.d. Calibration of closing and opening positions.e. Inspection and calibration of the transmission mechanism.f. Phase-to-phase and phase-to-ground insulation resistance calibration.
    Ningbo Tianshun Electric Co., Ltd
  • 2026-04-08

    Maintenance of Automatic Air Circuit Breakers

    Automatic air circuit breakers are structurally more complex than contactors and magnetic starters because they have a relatively complete arc extinguishing device. They can automatically trip the circuit in the event of overload, short circuit, undervoltage, or voltage loss. a. Closing and tripping test.b. Adding lubricant to the transmission mechanism.c. Phase-to-phase insulation resistance calibration.d. Overcurrent calibration of the switch.e. Inspection of incoming and outgoing contacts.f. Inspection of the arc extinguishing grid.g. Contact maintenance.
    Ningbo Tianshun Electric Co., Ltd