Description
The Johnson Controls P72CG-1C is a PENN P72 Series pressure control with a Double-Pole, Single-Throw (DPST) switch. Per the manufacturer, the P70, P72 and P170 controls for high pressure applications "are designed primarily for high pressure cut-out control, head-pressure control, and condenser fan cycling control on commercial refrigeration and air conditioning applications. Controls are available in several pressure ranges and are compatible with most common refrigerants. You can also use the controls on other non-corrosive fluid applications."
What sets the P72 apart from the single-pole P70 is the switch: the P72 models have a double-pole, single-throw switch with load-carrying contacts that provide direct control of 120 V to 600 V single-phase motors and 208 V to 240 V three-phase motors, so a compressor or condenser fan motor can be switched without an interposing relay or starter. A pressure-actuated bellows is connected to a pressure tap on the controlled system by a capillary or field-installed hose; the bellows responds to system pressure changes and operates a snap-action electrical switch.
* Brand / Manufacturer: Johnson Controls (PENN)
* Model / Part Number: P72CG-1C
* Series: P72 Series pressure control (DPST switch only)
* Switch Action: DPST, open-high, automatic reset
* Operating Range / Differential: Not published by Johnson Controls for this dash number - verify the range, differential and pressure connection on the control nameplate before ordering
* Conduit: The G enclosure code specifies a 1/2 in. conduit opening, while Johnson Controls states most P72 models use a 3/4 in. opening - verify before ordering fittings
* Enclosure: Type 3R (NEMA 3R) rainproof; plated and painted steel case and cover; must be mounted upright with all gaskets in place
* Dimensions (H x W x D): 4-1/16 x 4-1/16 x 2-15/16 in. (104 x 104 x 74 mm)
* Shipping Weight: 3.3 lb (1.5 kg), individual pack
* Electrical Ratings (DPST, per set of contacts): 120/208/240 VAC - 24.0 FLA, 144.0 LRA, 24.0 resistive A; 480 VAC - 5.0 FLA, 30.0 LRA; 600 VAC - 4.8 FLA, 28.8 LRA
* Three-Phase Ratings (two-pole): 208 VAC - 15.9 FLA, 95.4 LRA; 240 VAC - 15.0 FLA, 90.0 LRA
* Pilot Duty: 125 VA at 120 to 600 VAC; 20 VA at 120 to 300 VDC
* Ambient Temperature: -40 to 140°F (-40 to 60°C)
* Wiring: Screw terminals; use copper conductors only
* Compliance: cULus Listed, UL 60730; United States Controllers, Refrigeration SDFY.SA516; Canada SDFY7.SA516
* Accessories: BKT38A-600R L-shaped horizontal surface mounting bracket; BKT40A-600R vertical surface mounting bracket
Typical applications include high pressure cut-out, head-pressure control and condenser fan cycling on commercial refrigeration and air conditioning systems, and the controls may also be used on air, water and other non-corrosive fluids. Mount the control in an accessible position and avoid sharp bends in the capillary tube. Note that only specific P70/P72 models are UL Listed as refrigeration pressure cut out controls; that listing is not published for this dash number, so do not apply this control as a safety or limit device unless the nameplate carries the listing. Except for models listed as pressure cut out controls, use this control only as an operating control - where failure or malfunction could lead to personal injury or property damage, incorporate additional supervisory, alarm, safety or limit devices into the control system. Do not make field repairs.. Johnson Controls. Johnson Controls. P72CG-1C.
Warranty Information
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