SCHNEIDER TeSys ® GV2/GV3 series motor circuit breakers

SCHNEIDER TeSys  ®   GV2/GV3 series motor circuit breakers

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Since entering the Chinese market in 1987, Schneider Electric has introduced circuit breaker technology to China through its Tianjin Meilan Rilan joint venture factory, gradually promoting the improvement of China's electrical safety standards and industrialization process. At present, Schneider Electric has 77 offices, 26 factories, 6 logistics centers, 3 research and development centers, and over 700 distributors in China, with nearly 22000 employees, providing advanced product support and comprehensive technical services for the Chinese market.

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TeSys series motor circuit breakers: a comprehensive overview of domestic and imported product lines

Schneider Electric's TeSys series motor circuit breakers are divided into two product lines: domestic and imported, covering various types of thermal magnetic and electromagnetic types, suitable for motor protection scenarios with different power, voltage, and environmental requirements.

2.1 Domestic TeSys motor circuit breakers: GV2-ME and GV2-PM

The domestically produced GV2 series is a thermal magnetic motor circuit breaker suitable for AC 50/60Hz systems, with a rated current coverage of 0.1A to 32A and a maximum motor power of 15kW (400V). The product complies with various international standards such as IEC 947, EN 60204, UL 508, CSA, and has obtained CCC and CE certifications.

The core features include:

Excellent breaking capacity: Within the voltage range of 230V~690V, the maximum breaking current (Icu) can reach 100kA, especially in 400V systems with a breaking capacity of 15kA~50kA.

Thermal magnetic dual protection: The thermal element provides overload protection and has automatic compensation function for ambient temperature; Magnetic components provide short-circuit protection, with a trip threshold of 13 times the thermal set current.

Modular design: supports the installation of various accessories such as auxiliary contacts, undervoltage trip, and shunt trip, with strong scalability.

Flexible installation: Can be installed on 35mm standard rails, panels, or porous mounting plates, supporting vertical or horizontal installation.

2.2 Imported TeSys motor circuit breakers: GV2/GV3 series

The imported product line is more diverse, including:

GV2ME/GV2P: Thermally magnetic, rated current up to 32A, with a maximum breaking capacity of 100kA.

GV3ME/GV3P: Thermally magnetic, current up to 80A, suitable for higher power motors (up to 37kW).

GV2LE/GV2L/GV3L: Electromagnetic type, to be used in conjunction with thermal overload relay, suitable for precise overload protection scenarios.

GV2RT: Designed for motors with high starting peak current, the magnetic trip threshold is increased to 20 times In.

Further optimization of imported products in terms of structure, wiring, and applicable environment:

There are various wiring methods: GV2ME can choose screw clamping or spring terminals; The GV3 series uses EverLink ® Screw connection system, resistant to vibration and creep.

High protection level: Some models have a protection level of IP65, suitable for harsh environments.

Complete certification: equipped with UL, CSA, CCC, GOST, ATEX (partial) and other multinational certifications.

Core technical parameters and performance analysis

3.1 Breaking ability and current limiting characteristics

The breaking capacity of an electric motor circuit breaker is the key to evaluating its protective performance. In the 400V system, the GV2/GV3 series has Icu values ranging from 10kA to 100kA, and most products have high operating breaking capacity (Ics), with some reaching 100% of Icu. When used in conjunction with current limiting modules (such as GV1-L3), it can further improve the breaking performance and limit the thermal stress of short-circuit current, protecting downstream cables and equipment.

3.2 Thermal Magnetic Release Curve and Protection Characteristics

The thermal magnetic trip curve intuitively reflects the action time of the circuit breaker under overload and short circuit conditions. The GV2/GV3 series offers a multi curve family starting from cold and hot states, ensuring that the motor does not malfunction under starting current surges and provides reliable protection in the event of sustained overload. Electromagnetic circuit breakers (GV2L/GV3L) require LRD or LR2K series thermal relays to achieve inverse time overload protection.