2364-220 Invensys Relay
Invensys 2364-220 Pneumatic-Electric Relay with two SPDT switches, 2 to 25 psig setpoint range
Schneider Electric / Invensys 2364-220 Pneumatic-Electric Relay – DPDT, 4-20 psig
Invensys 2364-220 Pneumatic-Electric Relay with two SPDT switches, 2 to 25 psig setpoint range
Overview
The 2364-220 relay is a pneumatic-electric relay that converts gradual air pressure changes into positive electrical switching actions. It features a Double Pole Double Throw (DPDT) switching action using two SPDT switches that fire simultaneously. Designed for reliable control in HVAC systems—such as unit ventilators, fan coils, unit heaters, and air handling units—this relay excels in demanding environments. It has a fixed differential for consistent, accurate switching.
Specifications
| Specification | Details |
|---|---|
| Brand / Model | Schneider Electric / Invensys 2364-220 |
| Switch Action | DPDT (two SPDT switches operating simultaneously) |
| Setpoint Range | 4 to 20 psi (≈ 27.6 to 137.8 kPa) |
| Differential (nominal) | ~ 2.5 to 3.0 psi (~ 17.2 to 20.7 kPa) |
| Electrical Rating (per switch) | 20 amps non-inductive at 120, 240, 480 VAC |
| Max HP Load | 1 HP at 125 VAC; 2 HP at 240 VAC |
| Max Air Pressure | 30 psi |
| Ambient Temperature Range | 32 to 140 °F (0 to 60 °C) |
| Dimensions | ~ 3-11/16 in high × 2-1/2 in wide × 2-7/16 in deep |
| Conduit Entry | ½-inch conduit opening |
| Air Connection | ¼-inch plastic tubing nipple |
| Weight | ~ 6 lbs |
Features & Benefits
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Fixed differential ensures reliable, repeatable switching behavior.
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Rugged design with diaphragm-based sensing delivers long service life.
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Simultaneous SPDT switching provides flexible circuit control.
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High electrical ratings support large loads directly.
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Mountable in any position; durable enclosure works in harsh HVAC environments.
Applications
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Control systems where air pressure changes need to be converted to electrical on/off signals.
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Startup/shutdown of unit ventilators, fan coil units, unit heaters, air handling units.
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Safety or control interlocks triggered by pneumatic pressure changes.
Installation & Maintenance Notes
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Ensure clean, dry control air supply; avoid excessive moisture.
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Mount with short, stiff tubing to avoid signal lag; use supplied spring clip when connecting plastic tube.
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Adjust setpoint with cover removed using adjustment disc; use external pressure gauge for precise calibration.
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Periodically check switches for contact wear or corrosion, especially with frequent cycling.
Warranty & Compliance
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Built to manufacturer specifications; designed for durable use in HVAC control systems.
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UL listed and meets applicable safety standards for pneumatic-electric relays.
Related Products
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2364-211 variant (SPDT instead of DPDT) for single-pole applications.
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Other pneumatic electric relays in the same family with different setpoint/differential options.
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Accessories or replacement parts (switch assemblies, diaphragms, tubing/connectors).
Documents
| User manual | 2364 Series |
| Weight | 6 lbs |
|---|---|
| Dimensions | 7 × 7 × 7 in |
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