744-C Pressure Switch

Rugged stainless steel switch ideal in extreme environments

Ideal for use in areas with limited installation space, the 744-C model is a miniature piston-operated, field adjustable pressure switch designed to withstand challenging operating conditions—including exposure to oil, water, dust, impact forces and vibration.

Features

  • Adjustable pressure
  • Piston
  • 25-6000psig range


Advantages

  • Snap-action electrical switch tested to 1 million cycles
  • High overpressure capability
  • Close accuracy and repeatability
  • High shock and vibration survivability

Applications

  • Off road equipment
  • Industrial OEM equipment
  • Train braking systems
  • Compactors
  • Compressors

Specifications

  • Temperature range from -40 to 250°F
  • Pressure connection: 1/4"-18 and 1/8"-27 NPT, 9/16"-18 UNJF-3A
  • At 28 VDC:
    • 7 amps resistive
    • 4 amps inductive
    • 2 1/2 amps lamp load
  • 3 terminal tabs #8-32 with SEMS screws
  • Aluminum electric module housing
  • 303 stainless steel hydraulic module housing
  • Aluminum hard coat anodized adjusting sleeve
  • Tamper-resistant locking device
  • Nitrile "o"-ring
  • UL listed
  • NEMA Type 4 rating
  • Integral pressure port snubbing
  • Inherent rugged construction
Operating Pressure Data


Series 
Range
Indicator 
Range
Number 		 Adjustment Range Dead Band* Max System Pressure Proof Pressure
PSIG BAR PSIG BAR PSIG BAR PSIG BAR
744 1 150 25 - 140 1.72 - 9.65 4 / 14 0.28 / 0.97 1500 103 2250 153
744 6 300 50 - 275 3.45 - 18.96 10 / 27 0.69 / 1.86 2400 165 3500 241
744 2 575 100 - 540 6.89 - 37.23 15 / 45 1.03 / 3.10 3000 207 4500 310
744 3 1550 275 - 1500 18.96 - 103.42 45 / 130 3.10 / 8.96 4500 310 6800 469
744 4 3500 625 - 3400 43.09 - 234.42 150 / 240 10.34 / 16.55 6500 448 10000 690
744 5 6100 1100 - 6000 75.84 - 413.68 250 / 425 17.24 / 29.30 7500 517 12000 827