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United Electric Controls
A Message From The CEO
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.
To learn about additional industry solutions please visit our Viewpoints/Whitepapers section.
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
Dec. 12-13, 2017 - CH4 Connections, The Methane Emissions Conference,
Fort Collins, CO, USA
January 23-25, 2018 - Energy Generation Conference, Bismark, ND, USA
January 23-25, 2018 - TAMU Instrumentation Symposium, College Station, TX, USA
We actively use feedback to improve our delivery and provide you with the best possible service.
400 Series Pressure, Vacuum, Differential Pressure
and Temperature Switches
The 400 Series is a versatile family of vacuum, pressure, differential pressure and temperature switches for applications that require single or multiple switching capabilities. Dual and triple switch versions provide multi-output for alarm and shutdown,
pre-alarm and alarm, high/low limit or level staging functions.
A wide variety of microswitch and process connection options, along with a weather-tight enclosure, make the 400 Series an ideal choice for most ordinary location applications. Its worldwide use is assured with approvals and certifications to agency standards.
Widely used throughout the process industries, the 400 Series provides threshold protection and control for many critical functions. Typical installations are found in industrial gas production, energy generation including pumps, turbines and compressors, pulp and paper, and water and wastewater treatment.
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
UL listed and cUL certified. FM approved.
CE compliant to low voltage directive and pressure equipment directive.
Optional ATEX or GOST intrinsic safety compliance.
One, two or three switch outputs may be separated up to 100% of range.
Wide variety of available options and pressure sensor modules.
Most models available for immediate delivery
Storage Temperature -65 to 160°F (-54 to 71°C)
Ambient Temperature -40 to 160°F (-40 to 71°C); set point typically shifts less than 1% of range for
Limits a 50°F (28°C) ambient temperature change
Set point Temperature models: ± 2% of full scale range
Repeatability Pressure: models 126-376, 520-535, 540-547, 570-572, S126B-S164B: ± 2% of
full scale range; models 440-457, 550-559: ± 1% of full scale range; models
610-614: ± 3% of full scale range
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 Designed to meet enclosure type 4X requirements
Switch output One, two or three SPDT switches, may be separated up to 100% of range
except models 521-524, 531-534: 50%; models 520, 525, 530, 535, 570-572:
30%; switches may be wired “normally open” or “normally closed”
Electrical rating 15 A 125/250/480 VAC resistive. Electrical switches have limited DC
capabilities. Consult factory for additional information.
Weight Approx. 3 to 7.5 lbs.; varies with model
Electrical Connection One 3/4” NPT and two 7/8” diameter knockouts
Pressure Connection All models 1/4” NPT (female) except models S126B-S164B, 520-535: 1/2” NPT
(female); models 540-547: 1/8" NPT (female)
Temperature ‘E’ types use the same assemblies as ‘F’ types, however, range spans are
Assembly limited due to use of reference dials
Bulb and capillary: 6 feet 304 stainless steel
Immersion stem: models 120 &121: nickel-plated brass; optional 316L
stainless steel available
Fill Temperature Models: Model 1BS: solvent filled; models 2-8: non-toxic oil filled
Temperature Type F typically 1% and type E, B & C typically 2% of range under laboratory
Deadband conditions (70°F ambient circulating bath at rate of 1/2°F per minute change)
Differential Differential pressure indication available J400K, J402K models 147-S157B;
Pressure Indicator accuracy approximately 1-1⁄2% mid 50% of range, 3% at ends; window is
(option M210) plexiglass and gasketed; indicator may be field adjusted for approximately
± 1% accuracy at any set point within range
400 Series Customer Drawings
12342 - Type B400, Models 120 & 121
12354 - Type B402, Models 120 & 121
12366 - Type B403, Models 120 & 121
12306 - Type C400, Models 120 & 121
12318 - Type C402, Models 120 & 121
12330 - Type C403, Models 120 & 121
12343 - Type E400, Models 2BSA to 8BS
12355 - Type E402, Models 2BSA to 8BS
12367 - Type E403, Models 2BSA to 8BS
12307 - Type F400, Models 1BS to 8BS
12319 - Type F402, Models 1BS to 8BS
12331 - Type F403, Models 1BS to 8BS
12333 - Type H400, Models 126 to 164 & S126B to S164B
12335 - Type H400, Models 270 to 274
12336 - Type H400, Models 358 to 376
12340 - Type H400, Models 440 to 443
12337 - Type H400, Models 448 to 454
12338 - Type H400, Models 550 to 555
12341 - Type H400K, Models 455 to 559
12345 - Type H402, Models 126 to 164
12347 - Type H402, Models 270 to 274
12348 - Type H402, Models 358 to 376
12349 - Type H402, Models 450 to 454
12350 - Type H402, Models 550 to 555
12353 - Type H402K, Models 455 to 559
12357 - Type H403, Models 126 to 164
12360 - Type H403, Models 358 to 376
12297 - Type J400, Models 126 to 164 & S126B to S164B
12299 - Type J400, Models 270 to 274
12300 - Type J400, Models 358 to 376
12304 - Type J400, Models 440 to 443
12301 - Type J400, Models 448 to 454
12302 - Type J400, Models 550 to 555
13436 - Type J400, Models 570 to 572
12303 - Type J400, Models 610 to 614
12785 - Type J400K, Models 147 & 157
12305 - Type J400K, Models 455 to 559
12309 - Type J402, Models 126 to 164 & S126B to S164B
12311 - Type J402, Models 270 to 274
12312 - Type J402, Models 358 to 376
12316 - Type J402, Models 441 to 443
12313 - Type J402, Models 448 to 454
12979 - Type J402, Models 520 to 525
12978 - Type J402, Models 530 to 535
12314 - Type J402, Models 550 to 555
13437 - Type J402, Models 570 to 572
12315 - Type J402, Models 610 to 614
12787 - Type J402K, Models 147 & 157
12317 - Type J402K, Models 455 to 559
12321 - Type J403, Models 126 to 164 & S126B to S164B
12323 - Type J403, Models 270 to 274
12324 - Type J403, Models 358 to 376
12328 - Type J403, Models 442 & 443
12325 - Type J403, Models 448 to 454
12326 - Type J403, Models 550 to 555
13438 - Type J403, Models 570 to 572
12327 - Type J403, Models 610 to 614
13714 - Type J402K, Models 540 to 543
13715 - Type J402K, Models 544 to 547
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