PSB-100-R87 Pressure Switch (05754428-R87)

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SKU: PSB-100-R87 (05754428-R87)

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PSB-100-R87 Direct Mount Pressure Switch- Set at Rising to 87 PSI (05754428-R87)

The PSB switch is a direct-mount switch for critical pressure points.
It has one limit contact that can be used to activate an alarm, actuate indicator lights or shutdown equipment.
The construction of this instrument is the same as Murphy’s time proven Swichgage® instrument. A precision machined brass mounting plate and port captures a high-quality, stamped beryllium copper diaphragm.
The single-pole, double-throw (SPDT) snap-switch is operated directly from the diaphragm for quick acting and positive switching. Trip point is factory preset according to your specifications. Housing is weather sealed to prevent entry of moisture, dust, etc.
A glass-filled nylon terminal block with screw terminal connections gives the PSB switch a real advantage in industrial engine applications. The PSB is ideal when reading is not desired, but pressure is critical to operational efficiency. Intended for use in general purpose non-classified areas.



  • Housing: Plated steel.
  • Pressure Connection: 1/8-27 NPT, Brass.
  • Diaphragm: Formed beryllium copper (heat treated).
  • Pulsation Dampener: Brass (removable for cleaning)
  • Terminal Block: Three #4-40 screws.
  • Accuracy: Trip point: ±3% of full scale.
  • Switch reset differential: ±7% of full scale.
  • Repeatability: ±1% of full scale.
  • Contact Rating: SPDT 3 A @ 30 VDC inductive.
  • Temperature Range:
    Ambient= -40°F (-40°C) thru 150°F (66°C)
    Process= -40°F (-40°C) thru 250°F (121°C)
  • Shipping Weight: 8 oz. (0.25 kgs).
  • Shipping Dimensions: 3 x 2-3/4 x 2-3/4 in. (76 x 70 x 70 mm).


Sales Bulletin

For California customers: Prop 65 WARNING: This product may have been manufactured with or uses components that can expose you to chemicals which are known to the State of California to cause cancer. For more information go to

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