GV2-ME20C from Schneider Electric thermomagnetic circuit breaker

GV2-ME20C from Schneider Electric is a thermomagnetic サーキットブレーカー specifically designed for motor protection. It is suitable for AC circuits with a frequency of 50/60Hz and a voltage up to 690V, providing short-circuit protection, 過負荷保護, phase-failure protection, and direct control functions.

I. Basic Parameters and Functions

1. 定格電流

Setting Current Range: 13-18あ, suitable for three-phase motors with a power of approximately 9kW.

Magnetic Tripping Current: 223あ (about 12.4 定格電流の倍), enabling rapid response to short-circuit faults.

2. トリップ特性

Thermomagnetic Trip Unit: Combines long-time delay protection against overload (via thermal element) and instantaneous protection against short-circuit (via electromagnetic element).

Tripping Class: Complies with IEC Standard Class 10A, ensuring the overload current is cut off within 10 秒.

3. Structure and Protection

3-Pole (3P) Design: With a width of only 45mm, it saves installation space.

保護等級: IP20 (for the main unit) and IP55 (when equipped with a waterproof box), supporting dustproof and waterproof environments.

4. Certifications and Compliance

– Certified by CE and CCC, meeting international and Chinese electrical safety standards.

II. コア機能とアプリケーションシナリオ

1. Comprehensive Protection Capabilities

短絡保護: Boasts an interrupting capacity of up to 15kA, which can quickly cut off short-circuit current to prevent equipment damage.

過負荷保護: Built-in thermal relay triggers tripping through the deformation of bimetallic strips, responding to motor overheating.

Phase-Failure Protection: Automatically detects three-phase current imbalance to prevent motor burnout due to phase failure.

2. Control and Expansion

Manual Operation: Button-type control, supporting local start/stop and locking functions.

Remote Control: Can be equipped with an Under-Voltage Release (UVR) or Shunt Trip Release (SHR) to realize remote tripping.

アクセサリの拡張: Supports auxiliary contacts (例えば, GVAE11, GVAN11) and adapters (例えば, GV2-AF3), which can be combined with contactors to form a complete starter system.

3. 代表的な用途

産業分野: Direct starting and protection of motors for pumps, fans, compressors, 等.

Commercial Scenarios: Equipment with high reliability requirements, such as food processing machinery and packaging machinery.

Ⅲ. Technical Details and Installation

1. Environmental Adaptability

動作温度: -20℃ to +60℃, with a built-in temperature compensation function to ensure stability in different environments.

Storage Temperature: -40℃ to +80℃, adapting to extreme transportation and storage conditions.

2. 設置方法

DIN Rail Mounting: Compatible with TH35-7.5mm rails, supporting vertical or horizontal fixing.

Wiring Method: Screw-in terminals, suitable for wires with a cross-sectional area of 2.5mm² or less, with a tightening torque of 1.7N·m.

3. Service Life and Maintenance

Mechanical Life: 100,000 operations; Electrical Life: 100,000 operations (under AC-3 duty cycle), significantly higher than that of ordinary circuit breakers.

Modular Design: Facilitates maintenance and replacement of components.

IV. Price and Procurement

1. 市場価格

Retail Price per Unit: Approximately 126-180 人民元 (data as of 2025). Discounts are available for bulk purchases.

2. 代替モデル

– For higher current requirements, GV2-ME21C (17-23あ) or GV3-ME20 (10-16あ) can be selected.

– For intelligent requirements, an upgrade to models with electronic trip units in Schneider’s TeSys series can be considered.

V. Selection and Precautions

1. Current Matching

– Select the setting range based on the rated current of the motor, and it is recommended to reserve a 10%-20% margin to cope with load fluctuations.

2. Tripping Curve

– The thermomagnetic tripping curve (magnetic tripping at 12.4×In) is suitable for the inrush current characteristics of motors, avoiding frequent false tripping.

3. Installation Environment

– Ensure the installation location has good ventilation, and avoid high-temperature or humid environments that may affect the accuracy of thermal protection.

VI. Certification and Compliance Inquiry

– The compliance of the product can be verified by accessing the “Product Certificate Inquiry” function on Schneider Electric’s official website and entering the model or CCC certificate number (例えば, 2003010304032561).

For further technical support or customized solutions, it is recommended to contact the local service center of Schneider Electric or visit its official website for detailed information.