Chint RT28N-32X

Chint RT28N-32X is a fuse base suitable for low-voltage power distribution systems, mainly used for overload and short-circuit protection of circuits.

 I. Product Positioning and Functions

1. Type and Application

It belongs to the RT28 series cylindrical cap fuse base and needs to be used in conjunction with RT28 series fuse links (e.g., RT28-32) to form a complete protection unit. It is applicable to power distribution lines with an AC frequency of 45-62Hz, a rated voltage up to 500V, and a rated current up to 32A.

2. Core Functions

- Overload Protection: When the circuit current exceeds the rated value, the fuse link heats up and melts, cutting off the circuit.

- Short-Circuit Protection: It quickly breaks the circuit when a short-circuit fault occurs, preventing equipment damage or fire risks.

- Status Indication: The "X" in the model indicates that the base has a built-in fuse indicator light (red color), which automatically turns on when the fuse link melts, facilitating quick fault location.

 II. Key Technical Parameters

1. Electrical Parameters

- Rated Voltage: 500VAC (compatible with common voltage levels such as 220V).

- Rated Current: 32A (the maximum current of the fuse link that the base can be adapted to).

- Breaking Capacity: 20kA (capable of safely breaking short-circuit current).

- Certification Standards: Complies with GB 13539 and IEC 60269 standards, and has passed the CCC certification.

2. Physical Characteristics

- Pole Configuration Options: Supports three configurations of 1P, 2P, and 3P to meet different circuit requirements.

- Fuse Link Size: Suitable for cylindrical fuse links of 10×38mm (e.g., RT28-32 series).

- Installation Method: 35mm DIN rail installation, which is simple and firm.

- Overall Dimensions: Taking 3P as an example, the width is approximately 79mm, the height is 81mm, and the depth is 61mm.

 III. Typical Application Scenarios

1. Industrial Control

It is used for power protection of motor control circuits and automated equipment, such as the front-end protection of PLCs (Programmable Logic Controllers) and frequency converters.

2. Building Power Distribution

It is suitable for branch circuit protection of lighting systems and small distribution boxes, especially in scenarios with high space requirements.

3. Secondary Circuits

It serves as a protection component for control circuits (e.g., 24V, 220V signal circuits) to prevent system paralysis caused by short circuits.

 IV. Usage Precautions

1. Environmental Conditions

- Operating Temperature: -5℃ to +40℃, with the 24-hour average temperature not exceeding 35℃.

- Altitude Limit: ≤2000m; if the altitude exceeds this limit, derating is required (e.g., the current correction factor is 0.8 at 3000m).

- Avoid installation in humid, flammable environments or environments with corrosive gases.

2. Installation and Maintenance

- When replacing the fuse link, the power must be cut off and insulating gloves should be worn to avoid electric shock risks.

- The indicator light needs to be powered by the load circuit to work normally; ensure the integrity of the circuit during installation.

- Regularly check whether the base contacts are oxidized to ensure good contact.

3. Selection Recommendations

- Select the fuse link according to the load type: Type gG is suitable for general circuits, and Type aM is suitable for motor protection.

- If used in capacitor cabinets, it is recommended to switch to the RT36 series to meet higher breaking requirements.

 V. Comparison with Similar Products

 VI. Summary

With its compact design, reliable protection, and visual fault indication, Chint RT28N-32X has become a preferred solution for medium and low-power circuit protection. Its standardized rail installation and compatibility allow it to be widely used in industries, construction, and other fields. In practical use, it is necessary to select the product reasonably based on load characteristics and environmental conditions, and follow safety specifications to ensure stable operation of the system.