Legrand 421030 Al/Cu Cage Terminal for DPX3 Circuit Breakers

The Legrand 421030 Al/Cu cage terminal is a specialized electrical accessory engineered for seamless integration with DPX3 series circuit breakers. This component facilitates secure and efficient power distribution by providing a reliable connection point for aluminum and copper conductors. Designed for professional electrical infrastructure, it ensures high conductivity and mechanical stability within the Legrand power distribution ecosystem.

Advantages

This cage terminal offers superior versatility by supporting both copper and aluminum cables, making it an ideal choice for diverse electrical installation requirements. Its robust construction ensures a firm grip on conductors, which minimizes contact resistance and enhances the overall safety and longevity of the circuit breaker connection. The design is optimized for easy installation, allowing for efficient assembly within electrical panels while maintaining high performance standards under various load conditions.

Suitable for

• Professional electrical panel assembly
• Power distribution systems using DPX3 circuit breakers
• Industrial and commercial electrical installations requiring Al/Cu cable connections

When it may not be suitable

This terminal is specifically designed for use with the DPX3 series and may not be compatible with other circuit breaker models or brands. It is not intended for applications involving cable cross-sections outside the specified range or for environments where specialized non-standard terminal types are required.

Key specifications

• Material compatibility: Aluminum and Copper conductors
• Maximum capacity for flexible cables: 120 mm²
• Maximum capacity for rigid cables: 150 mm²
• Terminal type: Cage terminal
• Quantity: Set of 3 terminals

How to use

To install the Legrand 421030 cage terminal, ensure that the circuit breaker is completely de-energized and disconnected from the power supply. Insert the terminal into the designated slot on the DPX3 circuit breaker and secure it according to the manufacturer's torque specifications. Strip the insulation from your copper or aluminum conductor to the appropriate length, insert the conductor into the cage, and tighten the screw firmly to ensure a secure mechanical and electrical connection. Verify that the cable is held tightly and cannot be pulled out before restoring power.

What to consider before purchase

• Verify the compatibility of your specific DPX3 circuit breaker model
• Ensure the cable cross-section matches the 120 mm² or 150 mm² capacity requirements
• Confirm the number of terminals needed for your installation project

Usage recommendations

Always use a calibrated torque wrench to tighten the terminal screws to the manufacturer's recommended torque values to prevent damage to the conductor or the terminal itself. Ensure that the cable surface is clean and free of oxidation before insertion to maintain optimal electrical contact.