Schneider Electric (Barber Colman) 2354-501 Relay

The Schneider Electric (Barber Colman) 2354-501 is a professional-grade Pneumodular Diverting Relay designed for high-performance pneumatic control systems. Engineered for SPDT switching, this snap-acting device is critical for applications requiring precise interlocking functions, such as diverting supply lines between two different branch outputs or feeding/exhausting HVAC branch lines based on pressure thresholds. With a robust 60 SCFH air capacity, it ensures rapid response times for pneumatic actuators, dampers, and valves.

This HVAC pneumatic relay features a factory-calibrated 4-8 Psig setting. For field accuracy, the operational states are clearly defined: at pressures below 4 Psig, the Common (C) and Normally Open (NO) ports are connected; as pressure rises above 8 Psig, the relay switches to connect the Common (C) and Normally Closed (NC) ports. Designed for seamless mechanical room installation, the unit includes integrated barbed nipples compatible with 1/4" O.D. or 5/32" I.D. tubing. Its modular design allows for efficient surface mounting or manifold integration using standard 22-120 sockets, making it a reliable choice for maintaining building automation integrity.

• Enhanced Control Logic: Facilitates complex pneumatic sequences including day/night switching and summer/winter transitions.
• High Flow Efficiency: The 60 SCFH capacity minimizes signal lag in large-scale air handling units and VAV systems.
• Versatile Compatibility: Fits standard Barber Colman Pneumodular manifolds for quick field replacement and reduced downtime.
• Snap-Acting Mechanism: Prevents hunting and signal bleed by ensuring a definitive switch between ports.

• Can the 2354-501 be used as a high-pressure selector? While primarily a diverting relay, its SPDT configuration allows it to switch between two different pneumatic supply sources relative to a pilot signal.
• What is the maximum pressure rating for this relay? This unit is rated for a maximum operating pressure of 30 psig, suitable for most low-pressure control branch and main lines.
• Is this relay compatible with non-Schneider systems? Yes, the standard barbed connections and 4-8 psi range make it compatible with most legacy pneumatic systems from manufacturers like Johnson Controls or Honeywell.

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.