Value Brand
Value Brand Fan and Limit 170-190°F 120/277V AC
Surface-mount limit control with fan bypass, SPDT contacts, automatic reset, and 120/277V AC operation at 170–190°F
- Automatic reset restores operation after temperature drops
- Dual-voltage input works with 120 and 277 V AC systems
- SPDT contact form switches both open and close on rise
- Surface-mount base fits 2 by 1 5/8 in openings
- Adjustable range covers 170 to 190 °F for flexible limit control
Zoro Select Limit Controller for HVAC Systems
The Zoro Select 6UED3 is a surface-mount temperature limit controller with an integrated fan bypass. It serves HVAC technicians and facility managers who need automatic reset protection on heating equipment operating at 120V AC or 277V AC.
Switching Behaviour at 170 and 190 Degrees
The SPDT contacts open and close on temperature rise at both 170 and 190 degrees Fahrenheit. Automatic reset restores the circuit once temperatures fall, providing continuous cycling under sustained load without manual intervention.
Surface Mount with Two-Inch Base
The unit mounts on a 2 by 1 5/8 inch base using surface screws. Wiring to the SPDT terminals requires correct line-voltage polarity; miswired fan bypass or reversed sensor leads are the typical installation errors.
Highlights
- Automatic reset restores operation after temperature drops
- Dual-voltage input works with 120 and 277 V AC systems
- SPDT contact form switches both open and close on rise
- Surface-mount base fits 2 by 1 5/8 in openings
- Adjustable range covers 170 to 190 °F for flexible limit control
Specifications
| Brand | ZORO SELECT |
|---|
Questions about this item
Does the 120/277V AC controller generate noticeable heat or noise when running continuously?
The SPDT switch operates silently with no moving parts, so it produces no audible noise and negligible heat during all-day operation.
What existing wiring or components are required to install this surface-mount limit controller?
You need a 120V AC or 277V AC supply circuit and a compatible fan or heating load wired to the SPDT contacts for automatic reset control.
Will this 170-190°F limit switch work with an older furnace that uses a millivolt gas valve?
No, the controller requires 120V AC or 277V AC input voltage and is not compatible with millivolt systems.
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