Delixi Electric の CDV2s-32 シリーズ モーター スタート プロテクター

The CDV2s-32 Series Motor Start Protector (full name: CDV2s Motor Circuit Breaker) from Delixi Electric is an intelligent protection device specifically designed for three-phase AC motors. It integrates the functions of a circuit breaker and a thermal overload relay, and can directly replace the traditional “サーキットブレーカー + thermal relay” combination solution. It is suitable for various motor control scenarios in industrial, commercial and other fields. The following is its core information:

1. Core Functions and Technical Parameters
2. Protection Capabilities

Full-scenario Protection: Supports multiple protection functions such as short circuit, overload, phase failure and undervoltage, with precise operation realized through the built-in intelligent release.

Phase Failure Protection Characteristics: When the load of any two phases is unbalanced (e.g., phase failure), it will operate within 2 hours under 1.15 times the rated current, effectively preventing the motor from being burned due to phase loss.

Short-circuit Breaking Capacity: The minimum breaking capacity is 10kA, and the maximum can reach 100kA (depending on the specific model), which can handle high short-circuit current scenarios.

2. Electrical Parameters

Rated Voltage: AC 50/60Hz, with a maximum support of 690V (covering common industrial voltages such as 380V and 400V).

Setting Current Range: 0.1-32A, providing 15 subdivided specifications (e.g., 0.1-0.16A, 24-32A, etc.), suitable for motors ranging from 0.06kW to 22kW.

AC-3 Application Category: It can directly control the start and stop of the motor, and is suitable for occasions with infrequent operations (e.g., ≤120 times per hour); for frequent operations, it is recommended to use it with a contactor.

3. Certifications and Standards

It has obtained international certifications such as CCC, CE, SEMKO and CB, and complies with the standards of IEC 60947-4-1 (Low-voltage Switchgear) and GB/T 14048.4 (Motor Protection Circuit Breakers).

1. Design and Installation
2. Compact Structure

With a width of only 45mm, it can be directly installed on a 35mm standard guide rail, saving space in the distribution box.

The modular design supports expansion accessories, such as auxiliary contacts (front-mounted/side-mounted), undervoltage releases, shunt releases, etc., to meet complex control requirements.

2. Convenient Operation

Button-type Control: The start, stop and reset of the motor are realized through the panel buttons, with intuitive operation.

Tool-free Installation: The release and the circuit breaker are connected by a snap-fit design, supporting one-handed quick assembly and disassembly.

Wiring Design: It is equipped with upper and lower double-hole terminal blocks, supporting the connection of multi-strand hard wires or flexible wires, with a maximum wire cross-sectional area of up to 6mm².

III. Application Scenarios

1. Direct Motor Driven

It can replace the contactor to directly control the motor under low operating frequency (e.g., fans, water pumps), simplifying the circuit design.

Typical Cases: The 17-23A specification can drive a 15kW motor, and the 24-32A specification can drive a 22kW motor.

2. Use with Contactors

For equipment that starts and stops frequently (e.g., conveyors, compressors), it is recommended to be combined with CJX2s series contactors to extend the service life.

Wiring Scheme: The CDV2s serves as the power-side protection, and the contactor is responsible for frequent on-off operations, forming a complete “protection + control” solution.

3. Replacement of Imported Solutions

It is compatible with the installation dimensions and functions of similar products such as Schneider GV2-ME and Siemens 3VL, and can be directly replaced to reduce costs.

1. Model Selection and Price Reference
2. Specification Selection

Select the corresponding setting range according to the rated current of the motor. For example:

For a 1.5kW motor (rated current of approximately 3A), select the 0.63-1A specification;

For a 15kW motor (rated current of approximately 30A), select the 24-32A specification.

If auxiliary contact status feedback is required, models with “1NO + 1NC” or “2NO” auxiliary contacts can be selected.

2. Price Range

The price of the basic model (without auxiliary contacts) is approximately 13.96-175.77 RMB, depending on the current specification:

Small current range (e.g., 0.1-0.16A): approximately 14-30 RMB;

Large current range (e.g., 24-32A): approximately 150-176 RMB.

The price of models with auxiliary contacts or waterproof enclosures will increase by 20%-30%.

1. Installation and Maintenance Recommendations
2. Environmental Requirements

Operating Temperature Range: -5℃ to +40℃, humidity ≤90%RH (no condensation).

Avoid installation in environments with high temperature, strong vibration or strong electromagnetic interference.

2. Wiring Precautions

The main circuit wiring must be firm to avoid heat generation caused by poor contact;

For the wiring of auxiliary contacts, the normally open (NO) and normally closed (NC) contacts must be distinguished, and connected according to the control logic.

3. Regular Maintenance

Check the wear of the contacts every 6 months, and replace them in time if there is ablation;

Test the tripping characteristics every year to ensure the normal operation of the protection function.