United Electric H400K-457 Pressure Switch
The United Electric H400K-457 is a rugged, differential pressure switch designed for precision monitoring in HVACR and industrial process systems. Engineered with a Buna-N diaphragm and an epoxy-coated NEMA 4X aluminum enclosure, this unit provides high-level protection against moisture and debris in demanding field environments. It features a broad adjustable pressure range of 0 to 30 PSID, allowing technicians to fine-tune SPDT switch actuation points via a tamper-resistant internal reference dial. This model is recognized as the manufacturer-recommended direct replacement for H105K-457 and H105K-457-9942, ensuring a seamless drop-in fit for existing 400 Series installations.
For contractors managing pump control, air compressor monitoring, or safety shutdowns, the H400K-457 delivers repeatable performance with a deadband range of approximately 0.1 to 0.4 PSI. The 1/4" NPT female process connection and 3/4" NPT electrical conduit ports facilitate standard piping and wiring layouts. With a structural proof pressure rating of 225 PSI, this switch maintains setpoint integrity even when subjected to occasional system surges, making it a reliable choice for fluid and gas regulation applications.
Key Benefits- Enhanced Enclosure Protection: The NEMA 4X/IP66 rated die-cast aluminum housing is epoxy-coated to resist corrosion in harsh environments.
- Simplified Calibration: Features an internal calibrated reference dial for rapid setpoint adjustments without the need for external gauges during initial setup.
- Legacy Compatibility: Specifically designed to replace obsolete H105K-457 units, maintaining the same mounting footprint and electrical specifications.
- Versatile Media Handling: Compatible with air, water, and non-corrosive gases, supported by a durable Buna-N/aluminum wetted assembly.
What is the difference between proof pressure and working pressure?
Proof pressure (225 PSI for this model) is the maximum pressure the sensor can withstand without permanent damage, whereas the working pressure is the standard operating range where the switch maintains its accuracy and repeatability.
Can this switch be used for both rising and falling pressure?
Yes, the SPDT (Single Pole Double Throw) contact configuration allows you to wire the switch to activate a circuit on either a pressure rise or a pressure fall, depending on the terminal connections used.
Is this unit suitable for outdoor installation?
The NEMA 4X enclosure is designed to protect against windblown dust, rain, and hose-directed water, making it suitable for both indoor and outdoor service in typical HVACR applications.
This item is not eligible for free shipping.
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.
Original: $636.85
-65%$636.85
$222.90United Electric H400K-457 Pressure Switch
The United Electric H400K-457 is a rugged, differential pressure switch designed for precision monitoring in HVACR and industrial process systems. Engineered with a Buna-N diaphragm and an epoxy-coated NEMA 4X aluminum enclosure, this unit provides high-level protection against moisture and debris in demanding field environments. It features a broad adjustable pressure range of 0 to 30 PSID, allowing technicians to fine-tune SPDT switch actuation points via a tamper-resistant internal reference dial. This model is recognized as the manufacturer-recommended direct replacement for H105K-457 and H105K-457-9942, ensuring a seamless drop-in fit for existing 400 Series installations.
For contractors managing pump control, air compressor monitoring, or safety shutdowns, the H400K-457 delivers repeatable performance with a deadband range of approximately 0.1 to 0.4 PSI. The 1/4" NPT female process connection and 3/4" NPT electrical conduit ports facilitate standard piping and wiring layouts. With a structural proof pressure rating of 225 PSI, this switch maintains setpoint integrity even when subjected to occasional system surges, making it a reliable choice for fluid and gas regulation applications.
Key Benefits- Enhanced Enclosure Protection: The NEMA 4X/IP66 rated die-cast aluminum housing is epoxy-coated to resist corrosion in harsh environments.
- Simplified Calibration: Features an internal calibrated reference dial for rapid setpoint adjustments without the need for external gauges during initial setup.
- Legacy Compatibility: Specifically designed to replace obsolete H105K-457 units, maintaining the same mounting footprint and electrical specifications.
- Versatile Media Handling: Compatible with air, water, and non-corrosive gases, supported by a durable Buna-N/aluminum wetted assembly.
What is the difference between proof pressure and working pressure?
Proof pressure (225 PSI for this model) is the maximum pressure the sensor can withstand without permanent damage, whereas the working pressure is the standard operating range where the switch maintains its accuracy and repeatability.
Can this switch be used for both rising and falling pressure?
Yes, the SPDT (Single Pole Double Throw) contact configuration allows you to wire the switch to activate a circuit on either a pressure rise or a pressure fall, depending on the terminal connections used.
Is this unit suitable for outdoor installation?
The NEMA 4X enclosure is designed to protect against windblown dust, rain, and hose-directed water, making it suitable for both indoor and outdoor service in typical HVACR applications.
This item is not eligible for free shipping.
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.
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Description
The United Electric H400K-457 is a rugged, differential pressure switch designed for precision monitoring in HVACR and industrial process systems. Engineered with a Buna-N diaphragm and an epoxy-coated NEMA 4X aluminum enclosure, this unit provides high-level protection against moisture and debris in demanding field environments. It features a broad adjustable pressure range of 0 to 30 PSID, allowing technicians to fine-tune SPDT switch actuation points via a tamper-resistant internal reference dial. This model is recognized as the manufacturer-recommended direct replacement for H105K-457 and H105K-457-9942, ensuring a seamless drop-in fit for existing 400 Series installations.
For contractors managing pump control, air compressor monitoring, or safety shutdowns, the H400K-457 delivers repeatable performance with a deadband range of approximately 0.1 to 0.4 PSI. The 1/4" NPT female process connection and 3/4" NPT electrical conduit ports facilitate standard piping and wiring layouts. With a structural proof pressure rating of 225 PSI, this switch maintains setpoint integrity even when subjected to occasional system surges, making it a reliable choice for fluid and gas regulation applications.
Key Benefits- Enhanced Enclosure Protection: The NEMA 4X/IP66 rated die-cast aluminum housing is epoxy-coated to resist corrosion in harsh environments.
- Simplified Calibration: Features an internal calibrated reference dial for rapid setpoint adjustments without the need for external gauges during initial setup.
- Legacy Compatibility: Specifically designed to replace obsolete H105K-457 units, maintaining the same mounting footprint and electrical specifications.
- Versatile Media Handling: Compatible with air, water, and non-corrosive gases, supported by a durable Buna-N/aluminum wetted assembly.
What is the difference between proof pressure and working pressure?
Proof pressure (225 PSI for this model) is the maximum pressure the sensor can withstand without permanent damage, whereas the working pressure is the standard operating range where the switch maintains its accuracy and repeatability.
Can this switch be used for both rising and falling pressure?
Yes, the SPDT (Single Pole Double Throw) contact configuration allows you to wire the switch to activate a circuit on either a pressure rise or a pressure fall, depending on the terminal connections used.
Is this unit suitable for outdoor installation?
The NEMA 4X enclosure is designed to protect against windblown dust, rain, and hose-directed water, making it suitable for both indoor and outdoor service in typical HVACR applications.
This item is not eligible for free shipping.
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.
