The Honeywell C6097A3004 pressure switch
Overview
The Honeywell C6097A3004 is a diaphragm-type pressure switch used to monitor gas or air pressure in combustion and ventilation systems. It is designed to sense falling pressure (break on fall), triggering a control or safety shutdown when pressure falls below a set threshold. Ideal for burner gas safety interlocks, blower pressure monitoring, or air/fan differential monitoring.
Features
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Detects positive gas (or air) pressure with reliable diaphragm actuation
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Break-on-fall switch logic (breaks control circuit when pressure drops below setpoint)
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Auto-reset capability (unless configured for manual reset)
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Setting range: 0.4 to 5.0 in. W.C.
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¼” NPT pressure connection
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Transparent cover over adjustment dial and scale plate
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Adjustment knob protected to prevent tampering
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Durable housing rated for IP54 enclosure
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Silver contacts rated for resistive and inductive loads
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Compatible with natural gas, LPG, or air service
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Optional vent connections and pressure taps available
Specifications
| Specification | Details |
|---|---|
| Model / Part | C6097A3004 |
| Switch Type | Break-on-fall gas/air pressure switch |
| Set Range | 0.4 – 5.0 in. W.C. |
| Connection Size | ¼” NPT |
| Electrical Rating | 24–250 VAC up to 5 A (resistive) |
| Housing / Enclosure | IP54 rated protection |
| Knob Adjustment | Protected adjustment screw / tamper-resistant cover |
| Materials | Aluminum die-cast housing, diaphragm (NBR) |
| Operating Temperature Range | –40 °F to +140 °F |
| Maximum Pressure (non-operating) | About 8.5 psi (600 mbar) |
| Switch Differential (Hysteresis) | ~0.10 to 0.16 in. W.C. |
| Weight | ~9.5 to 11.3 oz (270 to 320 g) |
| Mounting / Vent | Can include ⅛” NPT vent or differential port |
| Certification | UL, FM listed, CE / RoHS compliance |
Applications
The Honeywell C6097A3004 switch is commonly used in:
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Gas burner safety systems (monitoring gas inlet pressure)
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Vent or draft pressure detection in furnaces and boilers
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Combustion air blower monitoring and interlock
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Low-pressure differential monitoring for HVAC systems
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Gas valve train interlock systems
It protects downstream equipment by detecting pressure drop and triggering safe shutdown.
Benefits
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High sensitivity for low-pressure detection
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Simple dial adjustment for setpoint tuning
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Auto-reset (or lockout option) improves safety flexibility
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Tamper-resistant design supports compliance
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Robust construction suited for industrial environments
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Universal compatibility with gas, LP, or air systems





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