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PENN Controls Products Catalog

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P70 and P170 models Are also available with SPST Open High switch action, and are typically used for capacity control. Models with single-pole, double-throw (SPDT) or four-wire, two-circuit switch action allow users to install alarm devices or other control circuits. P72 models Have a double-pole, single-throw (DPST) switch with load-carrying contacts that can provide direct control of 208 to 240 V single-phase motors up to 3 horsepower, and 208 to 220 V 3-phase motors up to 5 horsepower. See the DPST Electrical Ratings (P72A, B, C, and D Models) that follow. Selection chart Table 157: Selection chart for standard P70, P72, and P170 Controls for low pressure applications Product code number Switch action Range psi (kPa) Differential psi (kPa) Pressure connection Max. overpressure Max. working pressure Limited knob adjustment MICRO-SET controls (for non-corrosive refrigerants) P70AB-12C 36 in. capillary with 1/4 in. flare nut P170AB-12C SPST open low 1/4 in. external flare connector Supplied, but not assembled P70EA-14C 36 in. capillary with 1/4 in. flare nut P170EA-14C SPDT 1 to 3 open low 1 to 2 close low 12 in. Hg to 80 (-41 to 551) Minimum 5 (34) Maximum 35 (241) 1/4 in. external flare connector 525 psig (3,617 kPa) 80 psig (551 kPa) None All-range controls (for non-corrosive refrigerants) P70AB-1C 1/4 in. external flare connector P70AB-2C Minimum 7 (48) Maximum 50 (345) Supplied, but not assembled P70BA-1C 36 in. capillary with 1/4 in. flare nut P70BA-10C SPST open low Manual reset lockout P70EA-10C SPDT 1 to 3 open low 1 to 2 close low 5 (34) fixed 1/4 in. external flare connector P72AA-1C None P72AB-1C DPST open low 36 in. capillary with 1/4 in. flare nut P170AB-2C SPST open low 1/4 in. external flare connector Mounted on differential screw P70CA-1C 36 in. capillary with 1/4 in. flare nut P170CA-1C SPST open high 20 in. Hg to 100 (-68 to 690) Minimum 7 (48) Maximum 50 (345) 1/4 in. external flare connector 325 psig (2,239 kPa) 100 psig (690 kPa) None All-range controls (ammonia-compatible) P70AA-5C SPST open low P70CA-4C SPST open high P70GA-11C Minimum 7 (48) Maximum 50 (345) P70HA-3C Four-wire, two- circuit Line M1 close low Line M2 open low 20 in. Hg to 100 (-68 to 690) Manual reset lockout 1/4 in. SS internal NPT 325 psig (2,239 kPa) 100 psig (690 kPa) None Note: To order models not listed in the selection chart, please contact Johnson Controls/PENN ® Refrigeration Application Engineering at 1-800-275-5676. 135 Refrigeration Products Catalog

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