Schneider CVS63BS25A molded case circuit breaker (MCCB)

 Schneider CVS63BS25A is a molded case circuit breaker (MCCB) in the EasyPact CVS series.

 Meaning of Model Designation

CVS: Indicates the product series.

63: Represents the frame current, which is 63A.

B: Denotes the breaking capacity. At a voltage of 400V, its ultimate short-circuit breaking capacity is 25kA.

S: Stands for the standard type.

25A: Signifies the rated current, which is 25A.

 Main Specifications

Rated Insulation Voltage: 690V.

Rated Operating Voltage: Suitable for AC circuits with a frequency of 50/60Hz and a rated operating voltage of 440V or below.

Trip Unit Type: Equipped with a standard TM-D thermal-magnetic trip unit, which provides both overload protection and short-circuit protection functions.

Mounting Methods: Can be installed horizontally, vertically, in a flat-up position, or at the top position. Available mounting types include fixed mounting, plug-in mounting, and withdrawable mounting.

 Product Features

Reliable Performance: Complies with standards such as IEC 60947-2 and holds certifications including Gost, CCC, and CCS.

Versatile Functions: Has an isolation function. Leakage protection can be achieved by installing a Vigi module or a Vigi Rex relay.

Good Compatibility: Shares common accessories and auxiliary components with other molded case circuit breakers of Schneider, which helps reduce costs.

As a molded case circuit breaker in the EasyPact CVS series, the circuit compatibility verification for Schneider CVS63BS25A requires matching and confirming the product performance with the core parameters, load type, protection requirements of the circuit, while conducting verification in accordance with standards and specifications. The specific methods are as follows:

 1. Verify the Basic Electrical Parameters of the Circuit

Voltage Parameters: The rated insulation voltage of this circuit breaker is 690V, and its rated operating voltage is suitable for AC circuits of 440V or below. It is necessary to confirm that the voltage of the circuit to be adapted falls within this range, and the circuit frequency is AC 50/60Hz. This avoids insulation damage or equipment malfunction caused by overvoltage.

Current Parameters: Its frame current is 63A and rated current is 25A. The long-term operating current of the adapted circuit must be ≤25A. Meanwhile, the instantaneous short-circuit current in the circuit must not exceed its breaking capacity (the ultimate short-circuit breaking capacity of Type B is 25kA at 400V), so as to prevent the circuit breaker from failing to effectively interrupt the circuit in case of a short circuit.

Pole Number Matching: The molded case circuit breakers in the CVS series are commonly available in 3-pole and 4-pole configurations. It is necessary to confirm whether the circuit to be adapted is a three-phase three-wire or three-phase four-wire system, and select the CVS63BS25A circuit breaker with the corresponding number of poles. This avoids problems such as leakage and open circuit caused by mismatched pole numbers.

 2. Match the Load Type of the Circuit

This circuit breaker is equipped with a standard TM-D thermal-magnetic trip unit, which provides dual protection against overload and short circuit. It is preferentially suitable for power distribution circuits with resistive loads (such as lighting) or general inductive loads (such as office equipment). If it is used in a load circuit with a large starting current (such as a motor circuit), it is necessary to additionally check whether the starting current will trigger an erroneous trip. If necessary, match it with appropriate accessories to adjust the tripping curve, ensuring that the motor start is not affected while the protection function is realized. Leakage protection circuits (such as power distribution circuits in humid environments) can also be adapted by adding a Vigi module.

 3. Verify Based on Installation and Application Scenarios

Adaptation to Installation Environment: It supports multiple mounting methods such as horizontal and vertical mounting, and is suitable for installation scenarios in conventional power distribution cabinets and distribution boxes. It is necessary to confirm that the space at the installation location can meet the installation dimensions of the circuit breaker and its accessories (such as leakage modules). Additionally, the environment should be free from severe dust, corrosive gases, violent vibrations, etc.; otherwise, the operational reliability of the circuit breaker may be affected, and additional protective measures must be taken.

Compliance Verification: This circuit breaker complies with standards such as IEC 60947-2 and CCC. For projects where the circuit to be adapted is located, if there are specific industry specifications (such as building electrical codes, industrial power distribution standards, etc.), it is necessary to confirm that the circuit design and circuit breaker selection meet the requirements of these specifications to avoid compliance issues.

 4. Cross-Verification with Official Materials

- You can log in to the Schneider Electric official website support center, search for the technical manuals or product data sheets of the EasyPact CVS series, and check whether the rated parameters, adaptation scenarios, and other information of CVS63BS25A are consistent with the circuit to be confirmed.

- You can also consult Schneider's official technical customer service, provide details such as the voltage, current, and load type of the circuit, and obtain professional suggestions on compatibility judgment.