Schneider Electric (Barber Colman) N800-0555-P Positioner Kit

The Schneider Electric (Barber Colman) N800-0555-P Positioner Kit is a critical field-service solution for achieving precise, proportional control of pneumatic damper actuators. Specifically engineered for use with M556, M573, and M574 pneumatic actuators, this positive positioner kit ensures the actuator shaft maintains a position directly proportional to the control signal, overcoming friction and high load resistance. This kit is technically identical to the legacy 2850-054 model, providing a direct drop-in replacement for aging Barber Colman systems. The assembly includes an N800-0555 positioning relay, an N800-1501 feedback arm, and a set of calibrated springs designed for 5 psi and 10 psi spans.

For technicians performing pneumatic actuator troubleshooting, the N800-0555-P allows for adjustable start-point settings between 3 to 12 psig via a recessed brass knurled dial. By integrating this actuator feedback arm, you ensure that multiple dampers move at the same relative rate, eliminating lag in sequenced HVAC systems. The rugged construction and 1/4 in. O.D. plastic tubing fittings facilitate a fast, secure installation on standard housing screw posts. Whether you are maintaining vortex dampers or complex air handling units, this kit provides the mechanical advantage and signal reliability required for industrial-grade proportional control.

Key Benefits

• Exact Multi-Model Compatibility: Optimized for seamless integration with M556, M573, and M574 damper actuators.
• Broad Span Versatility: Includes specific 5 psi and 10 psi springs to handle various sequence and signal requirements.
• Precise Signal Response: Features a 3-12 psig adjustable start point to fine-tune pneumatic positioning accuracy.
• Legacy Support: Serves as the official replacement for the Barber Colman 2850-054, ensuring no modifications are needed for older installs.
• Feedback System Reliability: Includes the N800-1501 feedback arm for real-time mechanical correction against actuator load.

Common Questions

Can I use this kit to sequence multiple actuators?
Yes. By selecting the appropriate 5 psi or 10 psi springs and adjusting the start points, the N800-0555-P allows you to sequence multiple pneumatic actuators from a single controller signal.

How do I adjust the actuator start point with this kit?
The start point is adjustable from 3 to 12 psig. Rotate the recessed brass knurled wheel located in the center of the positioner. Turning the wheel outward toward the spring hook will raise the pressure required for the actuator shaft to begin moving.

What is included in the N800-0555-P kit?
The kit is a complete pneumatic positioner assembly containing the positioning relay, a feedback arm, and the necessary springs and mounting hardware for standard Barber Colman damper actuators.

This item is not eligible for free shipping.

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.