EATON AZ-D100 Miniature Circuit Breaker, 1P, D-Curve, 100A, 15kA

The EATON AZ-D100 is a robust 1-pole miniature circuit breaker engineered to provide reliable protection for electrical circuits in demanding environments. This high-performance device is specifically designed to handle significant electrical loads, ensuring safety and operational continuity in industrial and commercial distribution systems. With its precise engineering, it effectively manages power flow while protecting downstream equipment from the risks associated with overcurrents and short circuits.

Advantages

The primary benefit of this circuit breaker is its D-type tripping characteristic, which allows it to tolerate high inrush currents without nuisance tripping. This makes it an essential component for circuits powering inductive loads such as large motors, transformers, or lighting systems with high startup demands. Its high breaking capacity of 15kA provides superior protection against severe short-circuit faults, enhancing the overall safety profile of the electrical installation. The compact 1-pole design facilitates efficient use of space within distribution boards while maintaining high performance standards.

Suitable for

• Industrial machinery and motor control centers
• Large-scale lighting systems with high startup currents
• Commercial electrical distribution panels
• Protection of transformers and inductive loads

This circuit breaker may not be suitable for residential applications where standard B or C curve characteristics are typically required for general-purpose household circuits. Using a D-curve breaker in circuits with low inrush currents may result in delayed protection during fault conditions.

Key specifications

• Number of poles: 1
• Tripping characteristic: D-curve
• Rated current: 100A
• Breaking capacity: 15kA
• System type: AC

How to use

The EATON AZ-D100 is designed for installation on standard DIN rails within electrical distribution enclosures. It should be mounted by a qualified electrician in accordance with local electrical codes and safety regulations. Ensure that the supply cables are properly sized for a 100A load and securely fastened to the terminals to prevent overheating. Once installed, the device can be manually toggled to the ON position to energize the circuit, and it will automatically trip to the OFF position if an overcurrent or short circuit is detected.

What to consider before purchase

• Verify that the D-curve characteristic matches the startup current requirements of your specific load.
• Ensure the 100A rating is appropriate for your circuit's total load and cable cross-section.
• Confirm that the 15kA breaking capacity meets the prospective short-circuit current levels of your installation site.

Usage recommendations

Regular inspection of the terminal connections is recommended to ensure they remain tight and free from oxidation. If the breaker trips, investigate the cause of the fault before resetting the device to ensure safe operation.