United Electric H400K-457 Pressure Switch 323613-751 The heater should be fastened

The heater should be fastened firmly around the lower section of the compressor assembly

making it ideal for standard motor starting duty

and the internal diaphragm instantly seals

balancing flow capacity with a more compact and cost-effective body design than full-port alternatives

Key Benefits Ensures precise airflow distribution across internal system components to prevent localized overheating

United Electric H400K-457 Pressure Switch 323613-751 The heater should be fastenedThe 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