- Industrial
- Electrical
- Safety Switches
- Collection_ safety switches & limits - heating
Safety switches safety switches & limits - heating Collection
Midwest Supply is your trusted source for a wide selection of affordable safety switches and accessories from leading brands like York, Nortek, Honeywell Home, and more. We offer a variety of switch actions (fusible, non-fusible, maintained) in durable materials (brass, steel, steel enclosures) to meet your industrial control requirements.
All Manufacturers
Airco Electrical Bosch Electrical Bradford White Electrical Broan Fans Electrical Buderus Electrical Burnham Boilers Electrical Carlin Electrical Electrical Electrical First Co Electrical Heat Transfer Prod Electrical Honeywell Home Electrical Honeywell Inc Electrical Intellihot Electrical Laars Electrical Mars Controls Electrical Mcdonnell Miller Electrical Modine Electrical
Navien Boilers & Water Heaters Electrical R.W. Beckett Electrical Rinnai Electrical Thermo Pride Furnaces Electrical Tjernlund Electrical Water Heater Parts Electrical Weil Mclain Electrical York Electrical
Navien Boilers & Water Heaters Electrical R.W. Beckett Electrical Rinnai Electrical Thermo Pride Furnaces Electrical Tjernlund Electrical Water Heater Parts Electrical Weil Mclain Electrical York Electrical
View Details
114639 | Flow Switch FS4-3RP-T Liquid with Test Feature 1 Inch NPT | Mcdonnell Miller
Brand: Mcdonnell Miller
SKU: 114639
View Details
109714-01 | Low Water Cut Off Control Xylem PSE801 with Harness and Probe | Burnham Boilers
Brand: Burnham Boilers
SKU: 109714-01
View Details
633900130 | Thermostat Plus Residential 90-160 Degrees Fahrenheit | Weil Mclain
Brand: Weil Mclain
SKU: 633900130
View Details
511624520 | Pressure Switch Air 1.4 Inch Water Column 10C382 | Weil Mclain
Brand: Weil Mclain
SKU: 511624520
View Details
511624511 | Pressure Switch Differential SPDT 0.90 Inch Water Column 10C214 | Weil Mclain
Brand: Weil Mclain
SKU: 511624511
View Details
511624510 | Pressure Switch Differential SPDT 1 Inch Water Column 10C213 | Weil Mclain
Brand: Weil Mclain
SKU: 511624510
View Details
510312021 | Limit Control Immersion 140-220 Degrees Fahrenheit Automatic Reset | Weil Mclain
Brand: Weil Mclain
SKU: 510312021
View Details
510300014 | Switch Spill 24V with Manual Reset 240 Degrees Fahrenheit | Weil Mclain
Brand: Weil Mclain
SKU: 510300014
View Details
510300013 | Switch Spill with Reset 210 Degrees Fahrenheit | Weil Mclain
Brand: Weil Mclain
SKU: 510300013
View Details
382200375 | Switch Block Temperature 350 Degrees Fahrenheit Open/250 Degrees Fahrenheit Close | Weil Mclain
Brand: Weil Mclain
SKU: 382200375
View Details
381300000 | Limit Aquastat Combination High/Low 3250 Plus for WGO Series | Weil Mclain
Brand: Weil Mclain
SKU: 381300000
View Details
950-0016 | Prover Old Style External J Box Mount SS2 SS2G Side Wall Vent Systems | Tjernlund
Brand: Tjernlund
SKU: 950-0016
View Details
52259-002U | Pressure Switch Antunes High Gas 52259-002U | R.W. Beckett
Brand: R.W. Beckett
SKU: 52259-002U
View Details
52259-001U | Pressure Switch Antunes Low Gas 52259-001U | R.W. Beckett
Brand: R.W. Beckett
SKU: 52259-001U
View Details
309200 | Switch 11MV for 61/64/67/69/70/764/767 | Mcdonnell Miller
Brand: Mcdonnell Miller
SKU: 309200
View Details
309100 | Flow Switch 11 Replacement with Manual Reset | Mcdonnell Miller
Brand: Mcdonnell Miller
SKU: 309100
View Details
179525 | Sensor RS-2BR-1 2 Level High Pressure 406 Degrees Fahrenheit 250 Pounds per Square Inch Gauge | Mcdonnell Miller
Brand: Mcdonnell Miller
SKU: 179525
View Details
165302 | Head Mechanism 94-HDLS Low Water Cut Off Controller Less Switch | Mcdonnell Miller
Brand: Mcdonnell Miller
SKU: 165302
Application
- 10C403
- 10C437
- 10C438
- Auto-Draft Inducers
- ES2 X-2 CGE AG
- G124X Boilers
- GV 3 Series Boilers
- HE/VHE Series
- Independence Series Boilers
- L8148E1299
- Low Water Cut Offs Water Feeder
- Low Water Cut Offs; Steam Boilers
- Plus 30/40/60/80
- SS1-R Side Wall Vent Systems
- T50M/80M/140M/199M/399M
- WHKE Millivolt Interlock Kit
Part Number
Pressure
Product Type
- 2 Level High Pressure
- Adapter
- Air
- Air Differential
- Air Negative
- Antunes High Gas
- Antunes Low Gas
- Aquastat 100-240DEG F Manual Reset Less Well
- Aquastat High Limit for Burnham Series 8H Boiler L4080B1212
- Block Temperature
- Blocked Vent
- Boiler
- Bulk Pack
- Combination High/Low
- Cutoff
- Cutoff with Manual Reset
- Differential
- Differential SPDT
- ECO
- Electric Replacement
- Electric with Manual Reset
- For 61/64/67/69/70/764/767
- For Combi Aspen
- For Combi K2WTC
- Gas
- General Purpose Liquid SPDT
- General Purpose SPDT with NEMA-1 Enclosure
- General Purpose SPDT with NEMA-4 Enclosure
- Green Label
- High
- High Sensitivity Liquid SPDT
- High Temperature
- Igniter Sensor Electronic LEC PENN Y75AA-3D
- Immersion
- Kit for Hydrolevel 48-140
- Liquid with Test Feature
- Low
- Low Strap-On New Style
- Low Water Cut Off Controller Less Switch
- Main
- Manual Reset with Bracket
- Mark II
- Old Style External J Box Mount
- On/Off
- Plus Residential
- Potentiometer Automatic Reset
- Redundant Limit
- Repair Kit
- Replacement for 21 Series
- Replacement with Manual Reset
- SPST Proving
- Spill 24V with Manual Reset
- Spill with Reset
- Suction
- Thermodisc Flue ECO
- Vent Blocked 200DEG F Setpoint
- Vent Blocked Manual Reset
- Water
- Water Hex Tee
- Water with Blue Dot
- Water with Gasket
- With Engagement/Overflow Switch
- With Screw
- Xylem PSE801 with Harness and Probe
- with Sensing Tube
Size
Temperature
Used on
- 80M/140M/199M
- ALP080-210 Boilers
- Alpine 80-105
- Aspen
- CGi-2.5-3-4 Series 1
- CH/NCB Model
- E/Q Series
- E110CN/CP E75CN/CP
- EZ Gas Burner
- EZ Gas Burner Pro Series
- Elite Boilers
- Elite FT
- Freedom and CHG Series Boilers
- GA124/17
- GA124/23
- GA244/37
- GA244/44
- GB142 Series
- GV
- GV90+
- Gas Fired Boilers
- HE-Series 3 HE-II Series 3-4-5
- HE-Series 3 HE-II Series 3-5
- HSJ; UC1; HSUL-J ; HST-J; HS115-J; HS1; HSUL-1; HST-1; HS115-1; Side Wall Power Venters
- HW Series Boilers
- K2WT-180B 180WTC
- K2WT80-180B
- MC50/80/99/120
- Model SSB
- Multilevel Control
- Pennant / Mighty Therm II
- Pennant Pool Heater
- SS2; SS2G Side Wall Vent Systems
- SSB-512
- SSB85-SSB160
- Series 61/64/67/69/70
- Series 93; 193; 94 and 194 Combination Low Water Cut-Offs/Pump Controllers
- T/EL/ELP
- T/EL/EP/ELP
- T/MC/EL/EP/ELP
- T50M/80M/140M/199M/399M/MC
- VHE Series 2
- WGO Series
- Water
Committed to customer satisfaction
as experts in Safety Switches
Recently Viewed
Popular Products
View all →
NGR02-BBA | Gas Regulator | 3/4" | 1/4" Orifice | GREEN 6.5-16" WC | Norgas Controls
Brand: Norgas Controls
SKU: NGR02-BBA
BA/10K-2-H210-D-BBX | Duct Humidity (%RH) Sensor with Optional Temperature Sensor | BAPI
Brand: BAPI
SKU: BA/10K-2-H210-D-BBX
N5D-1500-S | GAS REGULATOR 1-1/2" NPT 7-11"WC CSA | Norgas Controls
Brand: Norgas Controls
SKU: N5D-1500-S
ZPS-ACC04-1 | Room Pressure Pickup Ports with Temperature Sensor | BAPI
Brand: BAPI
SKU: ZPS-ACC04-1
B214 | Characterized Control Valve (CCV), 1/2", 2-way | Belimo
Brand: Belimo
SKU: B214
EPRC1501-NL | 1-1/2" X 1" F1807 PEX Reducing Coupling Lead Free | Everflow
Brand: Everflow
SKU: EPRC1501-NL