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Main product image of Remote Bulb Commercial Temperature Controller, 5 F to 95 F, 5 ft. Capillary, Copper Bulb Sensing Element
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Remote Bulb Commercial Temperature Controller, 5 F to 95 F, 5 ft. Capillary, Copper Bulb Sensing Element

Brand:
Honeywell
SKU:
T678A1155
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Remote Bulb Commercial Temperature Controller, 5 F to 95 F, 5 ft. Capillary, Copper Bulb Sensing Element
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We no longer carry T678A1155
Unavailable since August 29, 2026

Product Highlights

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Product Highlight: Voltage
240v, 277v, 120v
Product Highlight: Max Temp (F)
125°F Max Temp
Product Highlight: Differential
1°F
Product Highlight: Temperature Range (F)
5°F - 95°F

Description

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Remote bulb thermostats regulate temperature of air or liquids in ducts, pipes, tanks and boilers.

Features
  • Suitable for applications requiring temperature control of air or liquids where controller must be placed outside the sensing area
  • Typical uses include control of dampers and valves in heating, cooling and heating-cooling systems
  • Fast response models (available for use in return air duct) operate approximately four times faster than standard models.
  • Controller can be mounted in any position
  • Ambient temperature compensation provides good temperature control
  • Refer to T775 Electronic Remote Temperature Controller where more exact control is required and/or remote controller location is preferred
  • T678 Models Have a Maximum Connected Load of 2000 VA


Specifications
  • Application: Regulates temperature of air or liquids in ducts, pipes, tanks and boilers
  • Output Type: Relay
  • Type: Remote Bulb
  • Output: 2 SPDT
  • Voltage: 120 Vac or 240/277 Vac
  • Frequency: 50, 60 Hz
  • Sensor Element: Copper bulb
  • Number of Sensor Inputs: 1

Specs

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Application:

Commercial

Remote Bulb Temperature

Output:

Relay

Voltage:

240v

277v

120v

Hertz:

60

50

Contact Ratings 120v:

125 VA

Contact Ratings 240v:

125 VA

Contact Ratings 277v:

125 VA

Sensor Type:

Copper Bulb

Sensor Inputs:

1

Bulb Size:

1/2" x 4-3/16"

Capillary Length:

5 ft.

Max Temp (F):

125°F

Temperature Range (F):

5°F - 95°F

Differential:

1°F

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