EATON AZ-2-C125 Miniature Circuit Breaker, 2-Pole, C-Curve, 125A, 15kA

The EATON AZ-2-C125 is a high-performance 2-pole miniature circuit breaker engineered to provide dependable protection for electrical circuits in demanding environments. Designed for industrial and commercial power distribution, this device acts as a critical safety component by monitoring current flow and interrupting the circuit in the event of an overload or short circuit. With its robust construction and precise engineering, it ensures the integrity of electrical installations and helps prevent equipment damage.

Advantages

This circuit breaker offers exceptional reliability due to its high breaking capacity of 15kA, which allows it to handle significant fault currents safely. The C-curve tripping characteristic makes it versatile for various applications, providing a balanced response time that prevents nuisance tripping during minor inrush currents while reacting quickly to dangerous electrical faults. Its 2-pole configuration ensures that both phases are disconnected simultaneously, enhancing safety during maintenance or emergency shutdowns.

Suitable for

• Industrial power distribution panels
• Commercial building electrical systems
• Protection of high-current electrical equipment
• Main circuit protection in sub-distribution boards

When it may not be suitable

This device is not intended for residential applications where lower current ratings are typically required. It is also not suitable for DC circuits unless specifically rated for such use, as this model is designed for AC electrical systems.

Key specifications

• Number of poles: 2
• Rated current: 125A
• Tripping characteristic: C-curve
• Breaking capacity: 15kA
• 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 or enclosure. Ensure that the supply cables are correctly sized for a 125A load and securely fastened to the terminal connections to prevent overheating. Once installed, the toggle switch can be used to manually energize or de-energize the circuit as needed.

What to consider before purchase

• Verify that the 125A rating matches your circuit requirements
• Ensure the enclosure has sufficient space for a 2-pole module
• Confirm that the 15kA breaking capacity meets the short-circuit current levels of your installation

Usage recommendations

Regularly inspect the circuit breaker for signs of thermal damage or loose connections. If the breaker trips, investigate the cause of the fault before resetting the device to ensure continued safe operation.