J21K-254 | United Electric | Pressure

Relay Type: SPDT C-->N.O. @ setpoint Pressure rise

Relay Rating: 15 A resistive, 125/250/480 VAC

Setpoint: Internal Adjustment red 5/16 hex nut

Range: 0 to 90 psid (0 to 620 kPa) (model specific)

Differential:

J21K-140: 0.1 to 0.4 psi (0.7 to 3 kPa)

J21K-150: 0.3 to 0.7 psi (2 to 5 kPa)

J21K-232: 0.6 to 1 psi (4 to 7 kPa)

J21K-(254, 257): 2 to 4 psi (14 to 28 kPa)

Repeatability: ±1% over full range

Reset: Automatic reset by differential

Sensor Type:

J21K-1x0: Brass bellows diaphragm

J21K-2xx: Bronze bellows diaphragm

J21K-357: Stainless Steel bellows diaphragm

Operating Pressure Range:

J21K-140: 30" Hg vac to 30 psi (1241 kPa)

J21K-150: 30" Hg vac to 180 psi (1241 kPa)

J21K-232: 30" Hg vac to 110 psi (759 kPa)

J21K-254: 30" Hg vac to 200 psi (1379 kPa)

J21K-357: 30" Hg vac to 350 psi (2413 kPa)

Overpressure: (Burst) 180 psid (1241 kPa)

Max Operating Pressure: (Proof)

J21K-140: 6 psid (41 kPa)

J21K-150: 40 psid (276 kPa)

J21K-232: 25 psid (172 kPa)

J21K-254: 90 psid (620 kPa)

J21K-357: 70 psid (483 kPa)

Operating Temperature: -40° to 160°F (-40° to 71°C)

Operating Humidity: 10 to 90% Non-condensing

Wetted Parts: Brass, Bronze or SS bellows (See ordering)

Media Compatibility: Water, Glycol and Inert dry air

Process Connection: 1/4" FNPT

Wiring Terminations: 3 Screw terminals (Com, NO, NC), 14 AWG max

Mounting: 2 tab holes 0.25" dia

Enclosure Rating: Cast aluminum with 7/8" conduit hole, NEMA 4X