Description
Overview
The Schneider Electric (Barber Colman) 2373-501 is a pneumatic multi-input high and low selector relay engineered for demanding commercial HVAC control applications. This relay simultaneously monitors up to six pneumatic input signals and selects either the highest or the lowest signal for output, enabling precise proportional control in complex building automation and air handling systems.
Key Features
- Selects the highest and/or lowest of up to 6 pneumatic input signals
- Proportional action output for smooth, accurate control response
- 20 Psig main air operating pressure
- HI output port flow rate: 0.5 SCFH
- LO output port flow rate: 1.0 SCFH
- Designed for commercial building automation and HVAC pneumatic control systems
- Manufactured under the trusted Barber Colman legacy, now part of Schneider Electric
Applications
The 2373-501 is ideal for use in variable air volume (VAV) systems, multi-zone air handling units, and other pneumatic control networks where priority selection of high or low signals is required. It is commonly used to coordinate multiple zone demands, ensuring the most critical control signal is always acted upon.
Specifications
- SKU: 2373-501
- Brand: Schneider Electric (Barber Colman)
- Type: Multi-Input High and Low Selector Relay
- Number of Input Signals: 6
- Action: Proportional
- Main Air Operating Pressure: 20 Psig
- HI Output Port Flow Rate: 0.5 SCFH
- LO Output Port Flow Rate: 1.0 SCFH
Why Choose the Schneider Electric 2373-501?
Built on decades of Barber Colman pneumatic control expertise, the 2373-501 delivers reliable signal selection in multi-zone environments. Its dual-port output capability — with independent HI and LO ports — gives system designers the flexibility to drive separate downstream devices from a single relay, reducing component count and simplifying panel layouts.
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