EATON AZ-2-B63 Miniature Circuit Breaker 2P 63A B-Curve 25kA AC

The EATON AZ-2-B63 is a high-performance 2-pole miniature circuit breaker engineered to provide robust electrical protection in demanding environments. With a rated current of 63A and a B-type tripping characteristic, this device is specifically designed to safeguard electrical circuits against overcurrent and short-circuit events. Its impressive breaking capacity of 25kA makes it a reliable component for maintaining safety and operational continuity in complex electrical distribution networks.

Advantages

This circuit breaker offers exceptional reliability due to its high breaking capacity, which ensures effective fault clearing even in systems with significant potential fault currents. The B-curve characteristic provides a balanced response time, making it suitable for protecting cables and general electrical loads. Its 2-pole configuration allows for the simultaneous disconnection of both phases, enhancing safety during maintenance or fault conditions. The robust construction by EATON ensures long-term durability and consistent performance in industrial and commercial settings.

Suitable for

• Industrial electrical distribution boards
• Commercial building power systems
• Protection of general electrical circuits
• Applications requiring high short-circuit breaking capacity

This device may not be suitable for applications requiring a different tripping characteristic, such as C or D curves, which are often necessary for circuits with high inrush currents like large motors or transformers. It is also designed specifically for AC systems and should not be used in DC circuits unless explicitly rated for such use.

Key specifications

• Rated current: 63A
• Number of poles: 2
• Tripping characteristic: B-curve
• Breaking capacity: 25kA
• System type: AC

Installation should be performed by a qualified electrician in accordance with local electrical regulations. The device is typically mounted on a standard DIN rail within a distribution enclosure. Ensure that the supply is disconnected before beginning the installation process. Secure the breaker firmly onto the rail and connect the incoming and outgoing conductors to the appropriate terminals, ensuring all connections are tightened to the manufacturer's specified torque settings.

What to consider before purchase

• Verify that the 63A current rating matches your circuit requirements
• Ensure the B-curve characteristic is appropriate for your specific load type
• Confirm that the 25kA breaking capacity is sufficient for your installation's prospective short-circuit current
• Check that the physical dimensions are compatible with your existing distribution board space

Usage recommendations: Regularly inspect the circuit breaker for signs of thermal damage or loose connections. Periodically test the mechanical operation of the toggle switch to ensure it remains functional. Always adhere to the specific torque requirements provided in the technical documentation to prevent terminal damage.