54 Series Overview

Pressure and Temperature Switches



The 54 Series offers the OEM a combination of reliable performance and low cost. Available in pressure and temperature versions, with single or dual SPDT outputs and enclosed or open frame (skeleton) construction, the 54 Series family provides design versatility.





Product Overview




The 54 has been field-proven in a wide variety of OEM applications, including medical, laboratory, fire protection and heating equipment.

NEMA 1 or open frame construction

SPDT or dual switch outputs

Reference dial or hex adjustment

Adjustable ranges:

        ◦ 30" Hg Vac to 6000 psi

            1 bar Vac to 414 bar

        ◦ -130 to 650ºF

            -90 to 340ºC

Approvals: UL, CSA, CE

JIT Delivery









Compact design

Choice of one or two switch outputs

Reference dial or hex screw-type setting

Optional 1/2” NPT (male) by 1/8” NPT (female)

   polysulfone® pressure connection

Optional external manual reset

NEMA 1 or open frame (skeleton) versions for

   OEM   applications

Brass bellows models






Polysulfone® is a registered trademark of Amoco



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


Ambient Temperature Limits


                    Pressure Models

                             Models 126-164, 610-614: -40 to 160°F (-40 to 71°C);

                             Models 22-28; 16008, 16009: 0 to 160°F (-18 to 71°C)

                    Temperature Models -40 to 160°F (-40 to 71°C). Set point typically shifts less than 1% of range for a 50°F

                            (28°C) ambient temperature change.        



Shock                                        Set point repeats after 15 G, 10 millisecond duration


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


Enclosure Classification          Types C54, C54A, B54, F54, E54, J54, J54A, H54: complies with NEMA 1 requirements.

                                                      Types C54S, B54S, F54S, E54S, J54S, J54AS, H54S: not applicable


Set point Repeatability


                    Pressure Models

                              Models 22-28, 16008-16009, 126-164: ± 1% of full scale range;

                              Models 610-614: ± 1.5% of full scale range

                     Temperature Models ± 1% of full scale range


Switch output                           One or two SPDT snap action switch(es); dual switch may be separated up to 100% of

                                                      range; switches may be wired “normally open” or “normally closed”


Electrical rating                       15A 125/250/480 VAC resistive except models 16008-16009 – 20A 480/VAC. Electrical

                                                     switches have limited DC capabilities. Consult UE for additional information.


Enclosure Material                  Lexan® black finish for Types J54, J54A, H54, B54, C54, C54A, E54, F54 only


Weight                                      Approximately 12 oz.


Electrical  Connection           Types J54 & H54, C54, C54A, B54, E54, F54: 7/8” diameter hole; Type J54A: 1-1/16”

                                                     diameter hole


Pressure Connection              Models 22-28, 16008, 16009: 1/4” NPT (male); 126-164, 610-614: 1/4” NPT (female)


Temperature Assembly           Bulb and Capillary: 6 feet copper or 304 stainless steel capillary Immersion Stem: Brass


Fill                                             Non-toxic oil


Temperature Deadband         Typically 1% of range under laboratory conditions (70°F circulating bath at rate of 1/2°F

                                                     per minute change)




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