Switches > Temperature Switches > UE 54 Series


United Electric (UE) 54 Series General Service Temperature Switches

UE's 54 Series temperature switch offers the OEM a combination of reliable performance and low cost. Available 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 variety of OEM applications, including medical, laboratory, fire protection and heating equipment. Buna-N diaphragm and O-ring construction. For use in process temperatures below 200°F.

Key Specifications

  • NEMA 1 or Open Frame Construction
  • SPDT or Dual Switch Outputs
  • Reference Dial or Hex Adjustment
  • Adjustable Ranges from 30" HgVac to 6000 PSI
  • UL, CSA, and CE Approvals

Specifications, Manuals, and Supporting Literature

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Model Selection Guide

Use this table to find the right model for your application.  Don't see the option you need? Call a Lesman sales specialist at 800-953-7626

Adjustable Range Max.
Stem Length
and Bulb
Size (OD)
°F °C
E54: Internal reference dial, 6 ft. copper capillary and bulb.
0 to 150
50 to 300
150 to 650
-15 to 65
10 to 150
70 to 340
3/8" x 6-7/8"
3/8" x 4-1/2"
3/8" x 3-5/8"
E54: 6ft. stainless steel capillary.
50 to 300
150 to 650
150 to 650
10 to 150
3/8" x 4-1/2"
3/8" x 3-5/8"
C54: Internal adjustment via hex nut, brass immersion stem, 3/8" NPT conn.
0 to 225 -15 to 110 250/120 2-1/8" Stem BT C54-103
B54: Internal reference scale, brass immersion stem, 3/8" NPT conn.
0 to 225
200 to 425
-15 to 100
95 to 220
2-1/8" Stem BT
2-1/8" Stem BT
B54S: Skeleton construction, immersion stem, adjustment with reference dial.
0 to 225 -15 to 110 250/120 2-1/8" Stem BT B54S-103


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