A9N18376

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The Schneider A9N18376 is a high-performance miniature circuit breaker designed for reliable electrical distribution. This 4-pole device is part of the Acti9 C120N range, offering a robust solution for managing electrical circuits with a rated current of 125 A at 30 °C. It features a thermal-magnetic trip unit technology and a C curve, ensuring effective protection against overloads and short circuits. With a breaking capacity of up to 20 kA at 220-240 V AC, this circuit breaker is suitable for a variety of applications. It supports both AC and DC networks, with a rated operational voltage of up to 500 V DC. The A9N18376 is designed for easy installation on a 35 mm symmetrical DIN rail, featuring a clip-on mounting mode. Its compact design, with dimensions of 81 mm in height, 108 mm in width, and 73 mm in depth, makes it an ideal choice for space-constrained environments. The device is compliant with EN/IEC 60947-2 and EN/IEC 60898-1 standards, ensuring high safety and performance levels. Additionally, it offers a mechanical durability of 20,000 cycles and an electrical durability of 5,000 cycles, making it a reliable choice for long-term use.
Specification Description
Part Number A9N18376
Manufacturer Schneider
Product Type Miniature Circuit Breaker
Range Acti9 C120
Device Short Name C120N
Number of Poles 4
Rated Current 125 A at 30 °C
Breaking Capacity 20 kA at 220...240 V AC, 10 kA at 380...415 V AC, 6 kA at 440 V AC, 10 kA at ≤500 V DC
Trip Unit Technology Thermal-magnetic
Curve Code C
Rated Operational Voltage 230...400 V AC, 220...240 V AC, 380...415 V AC, 440 V AC, ≤500 V DC
Rated Insulation Voltage 500 V AC
Rated Impulse Withstand Voltage 6 kV
Suitability for Isolation Yes, conforming to IEC 60947-2
Mounting Mode Clip-on
Mounting Support 35 mm symmetrical DIN rail
Control Type Toggle
Local Signalling ON/OFF indication
Mechanical Durability 20,000 cycles
Electrical Durability 5,000 cycles conforming to IEC 60947-2
Connections - Terminals Tunnel type terminals 1...50 mm² rigid, 1.5...35 mm² flexible
Tightening Torque 3.5 N.m
Earth-leakage Protection Separate block
IP Degree of Protection IP20 conforming to IEC 60529
Pollution Degree 3 conforming to IEC 60947-2
Overvoltage Category IV
Operating Altitude 2000 m
Ambient Air Temperature for Operation -25…70 °C
Ambient Air Temperature for Storage -40…85 °C
Dimensions (H x W x D) 81 mm x 108 mm x 73 mm
Net Weight 0.82 kg
Colour White
Product Certifications EAC
Standards EN/IEC 60947-2, EN/IEC 60898-1
Sustainable Offer Status Green Premium product
RoHS Compliance Compliant
REACh Compliance REACh free of SVHC

The Schneider A9N18376 is a robust and reliable miniature circuit breaker designed for effective distribution and protection in electrical systems. With a rated current of 125 A and a breaking capacity of up to 20 kA, this device ensures optimal performance in various voltage conditions. Its thermal-magnetic trip unit technology and C curve code make it suitable for a wide range of applications. The A9N18376 is easy to install with its clip-on mounting mode and is compatible with 35 mm symmetrical DIN rails. It offers excellent mechanical and electrical durability, making it a dependable choice for both residential and commercial settings.

What is the primary function of this miniature circuit breaker?

The primary function of this miniature circuit breaker is to protect electrical circuits from damage caused by overcurrent or short circuits by interrupting the flow of electricity when a fault is detected.

What is the rated current capacity of this circuit breaker?

This circuit breaker has a rated current capacity of 125 A at 30 °C.

How many poles does this circuit breaker have?

This circuit breaker is a 4-pole device, providing protection for four separate circuits.

What is the breaking capacity of this circuit breaker?

The breaking capacity of this circuit breaker is 20 kA at 220...240 V AC, conforming to EN/IEC 60947-2.

Is this circuit breaker suitable for use in DC networks?

Yes, this circuit breaker is suitable for use in DC networks with a rated operational voltage of up to 500 V DC.

What type of tripping technology does this circuit breaker use?

This circuit breaker uses thermal-magnetic tripping technology to detect and respond to overcurrent conditions.

What are the dimensions of this circuit breaker?

The dimensions of this circuit breaker are 81 mm in height, 108 mm in width, and 73 mm in depth.

What is the degree of protection provided by this circuit breaker?

This circuit breaker has an IP20 degree of protection, conforming to IEC 60529.

What is the mechanical durability of this circuit breaker?

The mechanical durability of this circuit breaker is rated at 20,000 cycles.

Can this circuit breaker be used for isolation purposes?

Yes, this circuit breaker is suitable for isolation, conforming to IEC 60947-2.

  • Electrical distribution in residential, commercial, and industrial buildings
  • Protection of electrical circuits from overloads and short circuits
  • Integration into electrical panels for circuit management
  • Use in renewable energy systems for circuit protection
  • Application in data centers for reliable power distribution
  • Implementation in manufacturing facilities for equipment safety
  • Utilization in HVAC systems for electrical safety and control
  • Deployment in lighting systems to prevent electrical faults

This content has been produced using multiple sources. EU Automation takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.

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