Schneider GV2ME32C 3-pole thermal-magnetic circuit breaker

Schneider GV2ME32C is a 3-pole thermal-magnetic circuit breaker specifically designed for motor control and protection. It is suitable for AC circuits with a frequency of 50/60Hz and a voltage up to 690V, with a rated current adjustment range of 24-32A.

1. Core Functions and Protection Features

Full-Function Protection: Integrates overload, short-circuit, phase failure, locked rotor, and three-phase unbalance protection, complying with IEC 60947-2 e CEI 60947-4-1 padrões.

Thermal-Magnetic Trip Mechanism:

Proteção contra sobrecarga térmica: Detects overload current through a bimetallic strip, with an operating time meeting Class 10 padrões (tropeçando dentro 10 segundos) and manual reset capability.

Magnetic Trip Protection: Features a fixed instantaneous operating current of 416A±20% for short-circuit protection, ensuring reliable non-operation under starting inrush current.

Auxiliary Function Expansion: Supports installation of accessories such as undervoltage release (MN), shunt release (MX), and auxiliary contacts (por exemplo, YEDGVAE11, 1NO+1NC) to achieve remote control and status feedback.

2. Structural Design and Installation

Compact Size: With a width of only 45mm, it can be directly mounted on a 35mm DIN rail, supporting horizontal or vertical fixing to save distribution cabinet space.

Protection and Certifications: The main body has an IP20 protection rating, reaching IP55 with a cover; certified by CCC, CE, UL, CSA, etc., suitable for industrial and commercial environments.

Método de fiação: Adopts screw-clamp terminals compatible with various cable specifications. Wiring torque must be operated in accordance with manual requirements to ensure reliability.

3. Cenários típicos de aplicação

Motor Direct Start Control: Serves as a full-voltage starter, replacing the traditional contactor + thermal relay combination to simplify circuit design.

Protection for Pumps, Fans, and Other Equipment: Suitable for three-phase asynchronous motors with a rated current ≤32A, demonstrating stable performance especially in scenarios with frequent start-stop operations or large ambient temperature fluctuations.

Industrial Automation Systems: Cooperates with PLC or DCS systems to achieve remote emergency shutdown through shunt releases, enhancing system safety.

4. Selection and Usage Notes

Correspondência atual: Select the setting range based on the motor’s rated current. Por exemplo, the 24-32A GV2ME32C is suitable for motors with a rated current ≤32A. No entanto, it should be noted that high-efficiency motors (por exemplo, IE5) may have higher starting inrush current, so it is necessary to verify whether the magnetic trip value is sufficient.

Adaptabilidade Ambiental: Operating temperature range is -20℃ to +60℃. No additional adjustments are required when ambient temperature changes, as the thermal trip characteristic is equipped with built-in temperature compensation.

Installation Specifications: Ensure the spacing between the circuit breaker and adjacent equipment meets heat dissipation requirements. Avoid cable loosening during wiring to prevent overheating.

5. Market Feedback and Alternative Solutions

User Reviews: Users report high reliability and long service life (electrical life up to 100,000 operações). No entanto, it should be noted that false tripping may occur in high-efficiency motor applications due to insufficient magnetic trip value. It is recommended to prioritize upgraded models after 2023 (with improved magnetic trip value).

Modelos Alternativos: For a larger current range (por exemplo, 25-80UM), the Schneider GV3ME series can be considered; for electronic protection functions, the GV4PEM series offers more flexible setting options.

6. Technical Parameters and Price Reference

7. Manutenção e solução de problemas

Inspeção Regular: Clean contacts every 6 months, and check terminal tightness and trip mechanism flexibility.

Falhas Comuns:

Falso disparo: May be caused by insufficient magnetic trip value or excessively small thermal setting current. Verify the motor’s starting current and ambient temperature.

Ablação por contato: Replace the circuit breaker after long-term overload or short circuit to avoid protection failure due to contact adhesion.

Resumo

With its compact design, full-function protection, and high reliability, the GV2ME32C is an ideal choice for medium and low-power motor control. Durante a seleção, it is necessary to consider motor characteristics (por exemplo, starting current, efficiency class) and application environment, and match accessories if necessary to meet complex control requirements. For high-efficiency motor applications, it is recommended to prioritize upgraded GV2ME models or electronic protection solutions to ensure long-term stable operation.