EATON AZ-3-C25 Miniature Circuit Breaker, 3-Pole, C-Characteristic, 25A, 25kA

The EATON AZ-3-C25 is a robust 3-pole miniature circuit breaker engineered to provide superior electrical protection in demanding environments. Designed for high-performance power distribution, this device effectively safeguards electrical circuits against overloads and short circuits, ensuring the longevity and safety of connected equipment. With its precise C-tripping characteristic and high breaking capacity, it serves as a reliable component for maintaining operational continuity in industrial and commercial electrical systems.

Advantages

This miniature circuit breaker stands out due to its exceptional breaking capacity of 25kA, which allows it to handle significant fault currents safely. The 3-pole configuration makes it perfectly suited for three-phase power systems, providing synchronized protection across all phases. Its C-characteristic is specifically optimized for applications with moderate inrush currents, preventing nuisance tripping while ensuring rapid response during genuine electrical faults. The durable construction ensures long-term reliability even in intensive use scenarios, making it a dependable choice for professional electrical installations.

Suitable for

• Industrial power distribution panels
• Commercial building electrical systems
• Three-phase motor protection
• Large-scale lighting and heating circuits

When it may not be suitable

This circuit breaker is not intended for residential applications where lower breaking capacities are sufficient and more cost-effective. It is also not suitable for circuits requiring specific D-curve characteristics for high-inrush loads like large transformers or motors.

Key specifications

• Number of poles: 3
• Rated current: 25A
• Tripping characteristic: C
• Breaking capacity: 25kA
• Mounting type: DIN rail

How to use

The device should be installed by a qualified electrician onto a standard DIN rail within a distribution board. Ensure that the supply cables are correctly sized for a 25A load and securely fastened to the terminals to prevent overheating. Once mounted, the breaker can be manually switched on or off using the front toggle. In the event of a trip, identify the cause of the fault before resetting the breaker to the ON position.

What to consider before purchase

• Verify that the 25A rating matches your circuit load requirements.
• Ensure the 25kA breaking capacity meets the short-circuit current rating of your installation site.
• Confirm compatibility with your existing 3-phase distribution board layout.

Usage recommendations

Always adhere to local electrical codes and safety regulations during installation. Regularly inspect the terminals for tightness and ensure the device is free from dust or moisture accumulation to maintain optimal performance.