The J21K differential pressure switch monitors the difference between two system pressures or vacuums and senses excessive flow deviation, or verifies that a filter is clogged. The J21K's rugged design - with epoxy coated enclosure andsealed metal bellows - lends itself to exacting applications.

Widely used in refrigeration (chiller) and compressor applications, the J21K can be used for filter status monitoring and proof offlow

UE DIFFERENTIAL PRESSURE SWITCH PCS 1.00 725.00 725.00

Series: J21K

Model: J21K-S150B-M201-M900-M444-

(QC1-D02)

Enclosure: Die cast aluminum, epoxy

powder coated; gasketed

Adjustable Range: 0 to 40 psid

Deadband: 0.3 to 0.7 psi

Differential Proof Pressure: 300 psid

Working Pressure: 30 "Hg Vac to 300 psi

Switch Setting: Please advise

Sensing Element: Welded 316L SS

bellows with 1/2” NPT (female)

pressure connection

Switch Output: One SPDT snap action switch

Electrical Rating: 15 A 125/250/480 VAC

resistive.

Electrical switches have limited DC

capabilities.

Consult factory for additional information.

Electrical Connection: 7/8" diameter

conduit hole

Approvals: UL listed, Cul certified; low

Voltage Directive (LVD) 73/23/EC &

93/68/EEC

C/w DO1 Certificate of Origin &

Certificate of Conformance from Factory

C/w DO1 Certificate of Origin &

Certificate of Conformance from Factory

Options:

-M201: Factory set switch

-M444: Paper ID tag

-M900: Watertight conduit fitting; converts

7/8” hole to 1/2” NPT fitting