ABB S401M-C16NP Miniature Circuit Breaker

1. Product Overview

The ABB S401M-C16NP is an industrial-grade Miniature Circuit Breaker (MCB) designed to provide overload and short-circuit protection in low-voltage distribution systems. Its compact size, reliable performance, and ease of installation make it suitable for residential, commercial, and industrial applications.

2. Main Technical Specifications (Typical)

• Model: S401M-C16NP

• Product Type: Miniature Circuit Breaker (MCB)

• Poles: 1P + N (single pole plus neutral)

• Rated Current: 16 A

• Rated Voltage: 230/400 V AC

• Trip Characteristic: Type C (suitable for general loads such as lighting, sockets, and some inductive loads)

• Breaking Capacity: 6 kA (typical)

• Mounting: 35 mm DIN rail

• Operating Temperature: -25 ℃ to +40 ℃

• Protection Class: IP20

• Standards Compliance: IEC/EN 60898-1

• Operation: Quick on/off toggle handle

3. Advantages and Features

• Reliable Protection
  Provides dependable overload and short-circuit protection to safeguard circuits and equipment.

• Compact Design
  Saves space and is ideal for multi-circuit distribution boards.

• Easy Installation and Maintenance
  Standard DIN rail mounting simplifies installation and replacement.

• Type C Trip Characteristic
  Suitable for general domestic and commercial loads including lighting, outlets, and small motors.

• High Reliability and Durability
  Industrial-grade construction ensures stable long-term performance.

4. Applications

• Residential electrical circuit protection

• Commercial building low-voltage distribution

• Industrial control and load protection circuits

• Motor and equipment control circuits

• Lighting and socket circuit protection

• Small equipment and panel power distribution

5. Precautions for Installation and Use

1. Match Rated Parameters
   Verify that the breaker’s current and voltage ratings match the circuit’s requirements.

2. Correct Wiring
   Follow wiring diagrams carefully and ensure proper connection to avoid short circuits.

3. Environmental Conditions
   Install in dry, ventilated locations free of moisture, dust, and corrosive gases.

4. Routine Inspection
   Periodically check mechanical operation, connections, and overall condition.

5. Safe Operation
   Handle switching under load with caution and comply with safety protocols.

6. Professional Installation
   Installation and maintenance should be carried out by qualified electrical personnel.

The structure and details of the product：

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