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.

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

Features

• Compact size
• 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

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

Temperature 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)

Approvals
Type B54, C54, E54, F54 UL listed, CSA Certified Temperature: UL 873, file # E10667; CSA C22.2 No. 0 & 24, file # LR7814