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United Electric Controls
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United Electric Controls has more than 80 years of proven experience providing rugged pressure and temperature electromechanical and electronic switches to Chemical & Petrochemical, Power, Water & Wastewater and Oil & Gas industries, as well as many other challenging OEM applications.
UE pressure switches, pressure transducers and pressure transmitters, temperature switches and temperature sensors are designed for rugged, industrial environments.
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United Electric Controls has more than 150 distributors worldwide. Please visit our distributor locator page to find a distributor near you.
Three Manufacturing Divisions
Lean manufacturing for maximum productivity
Operational excellence (OpX) reduces waste
One-piece-flow for optimum manufacturing efficiency
Technical Sales: 617.923.6977
United Electric Controls Company
180 Dexter Ave
Watertown, MA 02472-4200
We actively use feedback to improve our delivery and provide you with the best possible service.
100 Series Pressure, Vacuum,
Differential Pressure and Temperature Switches
The 100 Series is a cost-effective pressure and temperature switch for process plants and OEM equipment. The rugged, one piece enclosure features a slanted cover for wiring accessibility.
A wide variety of microswitch and process-connection options make this versatile series ideal for applications requiring a rugged weather-proof mechanical switch.
Typical applications that utilize the 100 Series are heat tracing, freeze protection, processing equipment (pumps, compressors), inputs for annunciator panels, and fire suppression systems.
Rugged, NEMA 4X, epoxy coated enclosure
SPDT or DPDT switch output
Easy access wiring
Single switch output
Internal reference scale and adjustable deadband available
Adjustable ranges: ◦30 "Hg Vac to 5000 psi
• 1 bar Vac to 344 bar
• 0.2 "wcd to 500 psid
• 0,5 mbar d to 34,5 bar d
• -180 to 650 ºF
• -117 to 340ºC
Approvals: UL, CSA, CE, TUV
UL listed and cUL certified.
CE compliant to low voltage directive and pressure equipment directive.
Optional ATEX or GOST intrinsic safety compliance
Single switch (SPDT or DPDT) output
Welded stainless steel diaphragm models
Ultra low pressure, “wc models
Optional sensor material for corrosive media
Polished stainless steel flushmount connection
Pump switch models with wide adjustable deadband
Storage Temperature -65 to 160°F (-54 to 71°C)
Ambient Temperature -40 to 160°F (-40 to 71°C); models 520-525, 540-548, 700-706, 15731-15736: 0 to
Limits 160°F (-18 to 71°C); Set point typically shifts less than 1% of range for a 50°F (28°C)
ambient temperature change
Set point repeatability Temperature models: ± 1% of adjustable range
Pressure models 15623, 15731-15737, 171-174, 218, 270-376, 520-535, 540-543, 700-
706, 560-564: ± 1% of adjustable range; models 190-194, 183-189, 483-494, 544-548,
565-567, 610-680, 15884: ±1.5% of adjustable range
Internal set point lock on all pressure models
Shock Set point repeats after 15 G, 10 millisecond duration
Vibration Set point repeats after 2.5 G, 5-500 Hz
Enclosure Die cast aluminum, epoxy powder coated, gasketed, captive cover screws
Enclosure Classification Enclosure type 4X
Switch Output One SPDT snap action switch; switch may be wired “normally open” or “normally closed”
Electrical Rating 15A 125/250/480 VAC resistive except for H100-15623, 15731-15737, 15884, 20A
125/250/480 VAC resistive, B100-13546 and E100-13545, 22A/480 VAC. Electrical
switches have limited DC capabilities at 24-30 VDC, 2A resistive and 1A inductive. 125
VDC, 0.5A resistive, 0.03A inductive. Consult factory for additional information.
Weight 2-7 lbs; Varies with model
Electrical Connection 1/2” NPT (female); Two 7/8” diameter knockouts
Pressure Connection Models 15623, 218, 270-376, 610-680, 701-706, 15731-15884: 1/4” NPT
(female); Models 171-194, 483-494, 520-535, 15737: 1/2” NPT (female); Models 540-
548: 1/8” NPT (female); Models 560-564: 2” Sanitary Fitting; Models 565-567: 1.5”
Sanitary Fitting (Sanitary fittings mate with Tri-Clamp® fitting systems)
Temperature Assembly Bulb and capillary: 6 feet 304 stainless steel except for E100-13545, 10 feet 304
stainless steel Immersion stem: nickel-plated brass (standard) except for B100-13546
stainless steel; optional 316L stainless steel
Fill Models 1BS/BC are solvent filled, models 2-8 non-toxic oil filled
Temperature Deadband Type F typically 1% and type B, C, and E typically 2% of range under laboratory
conditions (70°F ambient circulating bath at rate of 1/2°F per minute change)
Heat Tracing or Thermostats designed specifically for heat tracing and freeze protection ambient sensing
Freeze Protection applications are available with types B100 and E100
100 Series Customer Drawings
12711 - Type B100, Models 120 & 121
12702 - Type C100, Models 120 & 121
12710 - Type E100, Models 2BCA to 8BS
12703 - Type F100, Models 1BC to 8BS
12745 - Type H100, Model 218
12837 - Type H100, Models 171 to 174
12848 - Type H100, Models 183 to 186/483 to 486
12842 - Type H100, Models 188 to 189/488 to 489
12705 - Type H100, Models 190 to 194/490 to 494
12706 - Type H100, Models 270 & 274
12704 - Type H100, Models 358 to 376
12961 - Type H100, Models 520 to 525
12965 - Type H100, Models 530 to 535
12985 - Type H100, Models 560 to 564
12986 - Type H100, Models 565 to 567
12707 - Type H100, Models 610 to 616
12708 - Type H100, Model 680
12709 - Type H100, Models 701 to 706
13416 - Type H100K, Models 540 to 543
13417 - Type H100K, Models 544 to 548
12709-30 - H100-15731 thru 15737
12709-29 - H100-15623
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