Front auxiliary contacts 2NO CTX mini 417151

Functional Extension of the CTX3 Mini Series

This auxiliary module enables flexible expansion of the control circuit when the standard number of contacts in the contactor is insufficient. It is designed for direct mounting on the front section of CTX3 Mini series contactors, eliminating the need for additional mounting rails or complex external wiring. This allows the installer to quickly add feedback signals to control circuits without replacing the main power unit.

Contact Configuration and Connection Method

The device is equipped with two normally open contacts (2NO), which close the circuit upon activation of the main contactor. This configuration is ideal for applications requiring "ON" status signaling or control of downstream automation components, such as indicator lamps or PLC inputs. The maximum rated current for these contacts is 3 A at 230 V AC (category AC-15), sufficient for safely switching typical signaling and control loads.

Wiring is performed via screw terminals, ensuring durable and mechanically stable connections resistant to vibrations commonly found in industrial distribution boards. This solution is preferred by installers due to the ease of verifying tightening torque and reliable contact performance even under long-term operation.

Applications and Practical Benefits

This module is a key component in building control systems for motors, ventilation, or industrial lighting where monitoring the operational status of the device is required. Top (front) mounting ensures the assembly maintains a compact distribution board structure, with the additional module not significantly increasing its width.

Key advantages of the solution:

• Rapid Expansion: Add feedback signals without replacing the entire contactor.
• Compact Design: Direct mounting on the front panel of the main device.
• Connection Reliability: Screw terminals guarantee electrical stability at currents up to 3 A.
• Versatility: Two normally open contacts allow dual use of the signal (e.g., local and remote signaling).

Please note that this module does not have its own drive mechanism – it operates solely as a passive component cooperating with the CTX3 Mini power contactor, which mechanically drives it during main circuit switching.