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Selection chart Table 197: P74 Series Differential Pressure Control selection chart Product code number Switch action Range pressure differential psig (kPa) 1 Switch differential Pressure connections Bellows material For all non-corrosive liquids P74AA-1C Single-pole, single- throw (SPST) closes on decreases in pressure difference P74BA-1C SPST opens on decrease in pressure difference 8 to 70 adjustable (55 to 483) 8 to 30 adjustable 36 in. capillary with 1/4 in. flare nut Stainless steel P74EA-8C 36 in. capillary with 1/4 in. flare nut P74EA-10C 2 to 26 adjustable (14 to 207) 3.5 fixed P74FA-1C 1/4 in. external flare P74FA-5C 8 to 60 adjustable (55 to 414) 1/4 in. FNPT P74FA-10C Single-pole, double- throw (SPDT) (snap- acting) 2 to 26 adjustable (14 to 207) 1.5 fixed 36 in. capillary with 1/4 in. flare nut P74JA-2C SPDT (floating) 8 to 60 adjustable (55 to 414) 2.5 fixed 1/4 in. external flare Brass 1 Maximum continuous pressure to low pressure bellows - 180 psig (1,241 kPa) Technical specifications Table 198: Electrical ratings Motor ratings 120 V 208 V 240 V 277 V P74AA, P74BA - 1 Phase AC Full Load A 20.0 18.7 17.0 — AC Locked Rotor A 120.0 112.2 102.0 — AC Non-Inductive A 22.0 22.0 22.0 — Pilot Duty 125 VA, 120 to 600 VAC; 57.5 VA, 120 to 300 VDC P74EA AC Full Load A 16.0 9.2 8.0 — AC Locked Rotor A 96.0 55.2 48.0 — AC Non-Inductive A 16.0 16.0 16.0 16.0 Pilot Duty 125 VA, 120 to 600 VAC P74FA AC Full Load A 6.0 3.4 3.0 — AC Locked Rotor A 36.0 20.4 18.0 — AC Non-Inductive A 10.0 10.0 10.0 10.0 Pilot Duty 125 VA, 120 to 277 VAC P74JA 1 A; 24 VAC Class 2; 50/60 Hz 172 Refrigeration Products Catalog

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