Schneider Electric (Barber Colman) 2354-502 Relay

The Schneider Electric (Barber Colman) 2354-502 Relay is a precision-engineered pneumodular diverting relay designed for demanding pneumatic control systems. This SPDT pneumatic switch provides reliable snap-acting performance for critical HVAC automation functions, including diverting supply lines or managing branch line exhaust. Factory-set for a 16-19 psig switching range, the 2354-502 diverting relay ensures seamless transitions: below 16 psig, the NO and C ports are connected, while above 19 psig, the NC and C ports establish continuity.

Built for efficiency in commercial environments, this relay features a robust 60 SCFH air capacity, making it compatible with high-demand pneumatic switching applications. The unit is equipped with versatile barbed nipples that accommodate 1/4" O.D. or 5/32" I.D. tubing, allowing for rapid field installation or panel mounting on standard manifold sockets. As a direct replacement for legacy Barber Colman R504-2 models, the 2354-502 is a staple for technicians maintaining building pressure, day/night setback controls, and complex interlocking sequences.

• Snap-Acting Precision: Eliminates signal fluttering during pressure transitions for more stable system operation.
• High Flow Rate: 60 SCFH capacity provides fast response times in branch line feeding and exhausting.
• Standard Connectivity: Integrated barbed nipples ensure secure logic line connections without extra fittings.
• Field Versatility: Can be mounted in any orientation and fits standard 22-120 manifold sockets for clean panel layouts.

What is the primary application for the 2354-502?
This relay is typically used for diverting a single supply line to one of two branch lines, or switching between two supply sources to a single output, common in summer/winter or day/night HVAC changeover logic.

Can I use this relay with lubricated air systems?
No. Like most precision pneumatic components, this device requires clean, dry, and oil-free control air to prevent internal diaphragm damage and ensure consistent switching action.

Is the switching differential adjustable on this model?
The 2354-502 comes with a fixed factory setting of 16-19 psig. For applications requiring different setpoints or adjustable ranges, you should consult the specific series data sheet for alternative models like the 2353 series.

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.