Value Brand
Value Brand Fan and Limit 120-140 Temp Range
Surface-mount limit controller opens and closes at 120–140 °F with automatic reset for 120 V or 277 V AC circuits
- Automatic reset restores operation without manual intervention
- SPDT contact form switches both heating and cooling circuits
- Dual-voltage input handles 120V AC and 277V AC supplies
- Adjustable range sets fan on at 120°F and off at 140°F
- Surface-mount base fits standard 2 in by 1 5/8 in openings
HVAC Fan and Limit Controller
The Zoro Select unit combines a temperature limit switch with a fan bypass function for surface-mounted HVAC installations. It operates on 120V AC or 277V AC supply voltage with SPDT contact form and automatic reset action. The switch opens and closes on temperature rise at 120 degrees F and 140 degrees F set points.
Surface Mount Build and Wiring
The controller mounts on a surface base measuring 2 in length by 1 5/8 in width for direct attachment to equipment panels. SPDT contacts provide both normally open and normally closed wiring options for fan and limit circuits. Automatic reset restores operation once temperature falls below the set point without manual intervention.
Replaces Failed Limit Switches
This control replaces worn or failed fan and limit switches in existing HVAC systems using the same temperature ratings and voltage range. The upgrade is worth it when the original controller no longer cycles the fan or fails to open the safety circuit at the correct temperature. It is not suited for applications requiring adjustable temperature ranges or different voltage specifications.
Highlights
- Automatic reset restores operation without manual intervention
- SPDT contact form switches both heating and cooling circuits
- Dual-voltage input handles 120V AC and 277V AC supplies
- Adjustable range sets fan on at 120°F and off at 140°F
- Surface-mount base fits standard 2 in by 1 5/8 in openings
Specifications
| Brand | ZORO SELECT |
|---|
Questions about this item
What temperature range does the 120-140 controller manage?
The switch closes and opens between 120 and 140 degrees Fahrenheit.
What surface-mount footprint does the 2 by 1 5/8 inch base need?
A flat area at least 2 inches long by 1 5/8 inches wide for the mounting base.
How is the SPDT controller wired for automatic reset on a 277V AC circuit?
Connect line voltage to the common terminal; the switch toggles between open and close on temperature rise and resets automatically when temperature falls.
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