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Specification
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Description
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Product switch action
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SPDT
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Pressure connection
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7/16-20 UNF for 6 mm (1/4 in. SAE external flare fitting), or 914 mm (36 in.) capillary with 6 mm (1/4 in.) flare fitting
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Ambient conditions
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Temperature: -40°C to 60ºC (-40°F to 140ºF)
Humidity: 0% to 95% R.H. non-condensing
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Enclosure
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Type 1: cast aluminum
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Dimensions
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Type 1 enclosure: 88 mm x 80 mm x 53 mm
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(H x W x D)
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(3.48 in. x 3.15 in x 2.09 in.)
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Approximate shipping weight
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Individual pack: (Type 1 enclosure): 0.5 kg (1.1 lbs)
Bulk pack: (Type 1 enclosure in multiples of 35 controls): 19 kg (41.88 lbs)
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Compliance
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cULus Listed; UL 60730, File SA516
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P77 for low pressure applications
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Purpose of control
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Pressure operating control: automatic reset controls
Pressure cut-out: manual reset controls
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Construction of control
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Electromechanical
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Number of cycles
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Automatic: 30,000 cycles
Manual reset: 6,000 cycles
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Method of mounting control
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Independently-mounted control
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Type 1 or Type 2 action
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Automatic: Type 1; Type 1.C; micro-interruption
Manual reset: Type 2
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Pollution degree
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Category 3
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Heat and fire resistance category
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N/A
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Rated impulse voltage
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4,000 V
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Ball pressure temperature
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N/A
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Field wiring rating
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90°C (194°F)
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Maximum overpressure
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20 bar (290 psi)
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Cover screw torque requirements
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Tighten enclosure screws to: 1.1–1.4 N·m (10–12 in·lb)
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P77 for high pressure applications
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Purpose of control
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Pressure operating control: automatic reset controls
Pressure cut-out: manual reset controls
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Construction of control
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Electromechanical
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|
Number of cycles
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Automatic: 30,000 cycles
Manual reset: 6,000 cycles
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Method of mounting control
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Independently-mounted control
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Type 1 or Type 2 action
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Automatic: Type 1; Type 1.C; micro-interruption
Manual reset: Type 2
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Pollution degree
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Category 3
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Heat and fire resistance category
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N/A
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Rated impulse voltage
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4,000 V
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Ball pressure temperature
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N/A
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Field wiring rating
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90°C (194°F)
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Maximum overpressure
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33 bar (479 psi)
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Cover screw torque requirements
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Tighten enclosure screws to: 1.1–1.4 N·m (10–12 in·lb)
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