J40 Series Overview

Skeleton Pressure and Vacuum Switches



The J40 can be utilized in OEM applications where compact size and performance are required. The sealed bellows sensor provides

a “leak-free” sensor for applications where elastomers are unacceptable. Proven reliability involving sterilizers, plasma-cutting, anesthesia equipment, and even protective switching devices for power equipment, have made the J40 a versatile OEM pressure switch.


Technical Brochure

Customer Drawings

Product Certifications/Approvals

Product Installation & Maintenance Temperature

Product Overview




Open frame construction

SPDT switch output

Sealed metal bellows sensors

Compact size

Proven reliability

       • 30 "Hg Vac to 300 psi

       • 1 bar Vac to 20,5 bar

  Approvals: UL, CSA

  JIT Delivery






  Sealed metal bellows sensor

  Brass or phosphor bronze wetted material

  Compact size

  Easy external adjustment

  AdjustaOptional adjustable deadband switch

  UL recognized for the US and  Canada; CE compliant

    to LVD & PED



Storage Temperature                -65° to 160°F (-54 to 71°C)


Ambient Temperature               -40° to 160°F (-40° to 71°C)



Shock                                         Set point repeats after 15 G, 10 millisecond duration


Vibration                                    Set point repeats after 2.5 G, 5-500 CPS


Enclosure Classification          Not applicable


Set Point Repeatability             ± 1% of full scale range


Switch output                           One SPDT; switch may be wired “normally open” or “normally closed”


Electrical rating                       15 A 125/250 VAC resistive. Electrical switches have limited DC capabilities. Consult

                                                     UE for additional information.


Weight                                       Approx. 4 oz.


Electrical  Connection             Direct to switch terminals


Pressure Connection               Models 218-230: 1/4” NPT (female);  Models 256-274: 1/8” NPT (male)


Mounting                                  Via NPT pressure connection





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