Honeywell 43191680-105 Dual Auxiliary Switch

As a field technician, you know that precise position feedback is non-negotiable for high-performance hydronic systems. The Honeywell 43191680-105 is a robust dual auxiliary switch assembly designed specifically for professional integration with ML6420, ML6425, ML7420, and ML7425 series direct-coupled valve actuators. This dual-switch kit provides two independent SPDT (Single Pole Double Throw) switching functions, allowing for simultaneous equipment interlocking—such as enabling a pump or chiller—and remote stroke position monitoring.

The Honeywell 43191680-105 is rated for 24 VAC applications and features fully adjustable switching points across the entire length of the actuator's stroke. This versatility ensures you can calibrate the precise moment of contact to meet specific job site requirements. The assembly comes factory-wired to a dedicated terminal block, simplifying the installation process in the field. When your sequence of operations requires reliable end-switch confirmation, this HVAC valve actuator accessory delivers the industrial-grade performance expected from Honeywell building controls.

• Dual SPDT Switching: Provides two separate, independent dry contacts for flexible system interlocking and signaling.
• Adjustable Calibration: Set the exact switching point anywhere along the actuator stroke for tailored operation.
• Seamless Integration: Specifically engineered for a perfect fit inside the ML6420 series and ML6425 series actuator housings.
• Simplified Wiring: Includes a factory-wired terminal block to reduce labor time and eliminate potential wiring errors.
• Reliable Feedback: Ensures accurate status reporting to the BMS (Building Management System) for enhanced diagnostic capabilities.

Can these switches be used for line voltage applications?
No. These switches are rated for a maximum of 24 VAC. Using them with 120V or higher will result in immediate equipment failure and safety hazards.

Is this compatible with ML7421 or M6421 actuators?
While similar, this specific 105 model is optimized for the ML6420/6425 and ML7420/7425 footprint. Always verify your specific actuator's stroke length and internal mounting slots before installation.

Do I need special tools to adjust the switching points?
Adjustment is handled via the internal cams. A standard screwdriver is typically all that is required to secure the cam at your desired stroke position.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.