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United Electric (UE) J21K NEMA 4X General Service Differential Pressure Switches

• Adjustable Ranges Within 30" HgVacD to 90 PSID
• Single SPDT Switch Output
• UL Listed and CSA Certified
• Welded 316 Stainless Steel Sensors
• Repeatability ±1% Adjustable Range
• Models Available from Stock

The UE J21K differential pressure switch maintains the difference between two system pressures or vacuums, senses excessive flow deviation, or verifies that a filter is clogged. It is designed with two separate opposing sensors that are connected by a rod to actuate the snap switch. The J21K's rugged design, with epoxy coated enclosure and sealed metal bellows, lends itself to exacting applications. Widely used in chiller and compressor applications, the J21K can be used for filter status monitoring and proof of flow.

Supporting Documentation
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Type	Description	Size
	Lesman Catalog Section: Pressure and Temperature Switches	1.6MB
	United Electric Switches Application Datasheet Faxback Form	16K
	United Electric's Guide to Choosing a Mechanical Switch	136K
	United Electric J21K NEMA 4X General Service Mechanical Differential Pressure Switch Series Specification Bulletin	287K
	United Electric J21K NEMA 4X General Service Mechanical Differential Pressure Switch Installation and Maintenance Instructions	188K

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Last Ed. Date: 01/29/2010 11:02 AM