The Schneider A9N18372 is a compact, high-performance miniature circuit breaker that provides essential protection for electrical circuits. It is part of Schneider Electric’s Acti9 range, known for its innovative design and reliable operation.

Product Description

The A9N18372 is designed to protect circuits from overloads and short circuits, ensuring the safety of electrical installations. It features a thermal-magnetic mechanism that disconnects the circuit in case of abnormal conditions, preventing potential damage and ensuring system reliability.

Key Features

• Thermal-Magnetic Protection: Combines thermal and magnetic protection to handle overloads and short circuits effectively.
• Compact Design: Space-efficient design suitable for standard distribution boards.
• High Breaking Capacity: Capable of managing high fault currents.
• User-Friendly Operation: Designed for easy installation and maintenance.

Technical Specifications

To make the best use of the Schneider A9N18372, it’s essential to understand its technical specifications.

Voltage Rating

The A9N18372 operates at a maximum voltage of 230V AC, making it suitable for a wide range of residential and light commercial applications.

Current Rating

With a current rating of 10A, the A9N18372 is designed for circuits with relatively low to moderate power requirements, offering reliable protection without frequent interruptions.

Breaker Type

The A9N18372 is a Type C circuit breaker, meaning it trips at 5 to 10 times the rated current. This type is ideal for circuits with inductive loads like motors and transformers.

Dimensions and Weight

The breaker measures 18mm in width and weighs around 110 grams, making it compact and easy to install within standard electrical panels.

Design and Build Quality

The design and build quality of the A9N18372 contribute significantly to its performance and durability.

Materials Used

Constructed from high-quality, flame-resistant materials, the A9N18372 ensures safety and longevity under various operational conditions.

Durability and Reliability

The A9N18372 is built to withstand harsh environments and frequent use, providing reliable performance and reducing the need for replacements.

Design Aesthetics

Its modern and sleek design integrates well with contemporary electrical panels, enhancing both functionality and appearance.

Installation and Setup

Proper installation is crucial for the effective performance of the Schneider A9N18372.

Pre-installation Considerations

Before installation, ensure that the power supply is turned off and verify that the breaker’s specifications match the requirements of your electrical system.

Step-by-Step Installation Guide

1. Turn Off Power: Disconnect the main power supply.
2. Remove Existing Breaker: If replacing an old breaker, carefully take it out from the panel.
3. Install A9N18372: Mount the new breaker onto the DIN rail of your electrical panel.
4. Connect Wires: Attach the input and output wires to the breaker terminals.
5. Test the System: Restore power and test the breaker to ensure proper operation.

Common Installation Mistakes to Avoid

• Incorrect Wiring: Ensure that wires are correctly connected to avoid malfunction.
• Overloading the Breaker: Adhere to the rated capacity of the breaker.
• Improper Mounting: Securely mount the breaker on the DIN rail to ensure stability.