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mercoid bi-metal air temperature switches

Designed for use as a limit switch, fan control, or alarm switch, Model M-51Temperature Switch is used on all types of air conditioning ducts, furnaces, ovens, dryers, etc.

This Bi-Metal Air Temperature Switch may also be used with damper control systems to prevent the spread of fire through ducts. Adjustments for both set and reset points. Visible dial shows duct temperatures and switch set points.

 

FEATURES
  • UL listed, CSA Certified
  • Automatic or Manual reset
  • Spst mercury switch (SPDT switches available)
  • Visible dial shows duct temperature
  • Two adjustments
    • one sets high temperature set point
    • one sets low temperature reset

 

mercoid bi-metal air temperature switches M-51
Double Adjustable
Heavy Duty
Automatic Reset

Limit Switch
Fan Control
Alarm Switch

Service
Compatible gases

Switch Type
SPST mercury switch. Optional SPDT

Electrical Rating
10A @ 120 VAC/DC
5A @ 240 VAC/DC
3/4 HP @ 120/240 VAC single phase
1/3 HP @ 120/240 VDC

Electrical Connections
Screw terminal

Process Connection
Mounting flange. Reversible for flat or curved surfaces.

Enclosure Rating
Generl purpose

Mounting Orientation
Horizontal and level

Set Point Scale
Indication in oF standard. oC optional

Weight
5 lb (2.27 kg)

Conduit Connection
7/8" (22.23 mm) hole for ½" (12.7 mm) conduit hub

Set Point Adjustment
Internal moveable pointers for set point and reset point

Deadband
Adjustable from minimum in model chart to full range

Options
SPDT and DPST switches. Switch that closes on temperature increase.

Agency Approvals
UL and CSA. FM only on models M-51R-74 and MX-51R-75

 

Click here for full detailed product spec sheet

 

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