Legrand 421026 Al/Cu Cage Terminal for DPX3 3P 120mm2

The Legrand 421026 Al/Cu cage terminal set is a professional-grade accessory engineered specifically for integration with DPX3 circuit breakers. This set includes three terminals designed to facilitate secure and efficient electrical connections in 3-pole configurations. By supporting both aluminum and copper conductors, these terminals ensure high conductivity and long-term reliability within power distribution systems.

Advantages

These cage terminals offer superior mechanical strength and electrical performance, ensuring that connections remain stable even under demanding operational conditions. The design allows for versatile cable management, accommodating various conductor types while maintaining a compact footprint. The use of high-quality materials prevents oxidation and ensures consistent contact pressure, which is vital for the safety and longevity of electrical installations.

Suitable for

• Professional electrical panel assembly
• Power distribution systems using DPX3 circuit breakers
• Industrial and commercial infrastructure projects
• Installations requiring reliable Al/Cu cable termination

When it may not be suitable

This terminal set is exclusively designed for use with specific Legrand DPX3 circuit breakers and is not compatible with other series or brands. It is not intended for applications involving cable cross-sections outside the specified range or for environments where specialized high-temperature or corrosive-resistant terminals are required.

Key specifications

• Compatibility: DPX3 3-pole circuit breakers
• Conductor type: Aluminum and Copper
• Capacity (Flexible cable): 1 x 120 mm²
• Capacity (Rigid cable): 1 x 150 mm²
• Capacity (Bars): 18 mm
• Quantity: Set of 3 terminals

How to use

Installation should be performed by a qualified electrician in accordance with local safety regulations. First, ensure that the circuit breaker is fully disconnected from the power supply. Insert the cage terminals into the designated slots on the circuit breaker housing. Secure the cables into the terminals, ensuring they are fully seated, and tighten the screws to the manufacturer-recommended torque settings to ensure a secure electrical connection.

What to consider before purchase

• Verify the compatibility of your specific circuit breaker model
• Ensure the cable cross-section matches the terminal capacity
• Confirm that the installation requires a 3-pole configuration

Usage recommendations

Always use a calibrated torque wrench during installation to prevent damage to the terminal threads and to ensure optimal contact pressure for the conductors.