Legrand CTX3 Power Contactor 100A 3P 230V AC 2NO 2NC

The Legrand CTX3 power contactor is a robust electrical switching device engineered for demanding industrial and commercial environments. Designed to handle a rated current of 100A, this 3-pole contactor provides reliable performance for controlling power circuits, electric motors, and lighting systems. It operates on a 230V AC control voltage and includes a flexible auxiliary contact configuration of 2 normally open (NO) and 2 normally closed (NC) contacts, ensuring seamless integration into complex electrical control panels.

Advantages

This contactor stands out due to its high durability and consistent switching performance under heavy electrical loads. Its compact design allows for efficient space utilization within distribution boards and control cabinets. The inclusion of integrated auxiliary contacts simplifies the wiring process and enhances the versatility of the device in automated systems. Built to meet rigorous international standards, the unit offers long-term operational stability and reduced maintenance requirements in various industrial settings.

Suitable for

• Industrial motor control systems
• Commercial lighting management
• Power distribution panels
• Automated manufacturing machinery
• Heating and ventilation control systems

When it may not be suitable

This device is not intended for use in residential applications where lower current ratings are required or where the physical dimensions exceed the available space in standard consumer units. It is also not suitable for DC-only circuits unless specifically rated for such use.

Key specifications

• Rated operational current: 100A
• Number of poles: 3
• Control voltage: 230V AC
• Auxiliary contacts: 2 normally open (NO) and 2 normally closed (NC)

How to use

Installation should be performed by a qualified electrician in accordance with local electrical regulations. The contactor is typically mounted on a standard DIN rail or via screw mounting within an enclosure. Ensure that the power supply is disconnected before wiring. Connect the main power lines to the primary terminals and the control circuit to the coil terminals. Verify that the auxiliary contacts are correctly wired to your monitoring or feedback systems before energizing the circuit.

What to consider before purchase

• Verify that the 230V AC control voltage matches your existing control system.
• Ensure the 100A rating is appropriate for the peak load of your connected equipment.
• Check the physical dimensions to ensure compatibility with your existing electrical cabinet.
• Confirm the auxiliary contact requirements for your specific automation logic.

Usage recommendations

Regularly inspect the terminal connections for tightness and ensure the contactor is free from dust or moisture accumulation to maintain optimal performance and safety.