Image not available
Illustrative purposes only
57T01-843
TIME DELAY RELAY, 7A, 277VAC, PANEL
⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.
- Manufacturer: WHITE RODGERS
- Product type: Time Delay Relays - Electromechanical
- Contact Voltage VDC:-; Time Min:2s; Time Max:80s; Product Range:-; Contact Configuration:-; Contact Current:7A; Relay Mounting:Panel; Contact Voltage VAC:277V; Relay
- SVHC: No SVHC (17-Dec-2014)
- Time Max: 0
- Time Min: 2s
- Product Range: -
- Relay Mounting: Panel Mount
- Contact Current: 0
- Relay Terminals: Quick Connect
- Nom Input Voltage: 24VAC
- Timing Adjustment: -
- Contact Voltage VAC: 277V
- Contact Voltage VDC: -
- Contact Configuration: -
| Delivery and price | |
|---|---|
| Units per pack | 10 |
| Price | 24.42 € |
| Current stock | 10+ |
| Lead time | 30 days |
Datasheet
57T01-843 BLOWER TIME DELAY RELAY ## 57T01-843 BLOWER TIME DELAY RELAY The 57T01-843 Time Delay Relay is for use in air handlers installed in compressor-run air conditioning and heat pump systems to delay the blower shut-off after the compressor has shut off. Replaces Trane part numbers D155079P01 and RLY 2807. ## FEATURES - Allows residual cooled air to be blown into the controlled space, increasing the efficiency of the system in cooling. - Depending on electrical hookup in a heat pump system, delay of blower shut-off could also occur in heating. ## 57T01-843 ## SPECIFICATIONS Electrical Ratings: |**Model Number**|**Contact Ratings:**<br>Power Pole(Amperesperpole)-|**Contact Ratings:**<br>Power Pole(Amperesperpole)-| |---|---|---| |**57T01-843**||208/240/277 VAC| ||Full Load|7| ||Locked Rotor|36| ||Resistive|15| ||U.L. Approved Horsepower|3/4HP| Pilot Duty Pole . . . . . . . . . . . . . . . . . . . . . 3 VA at 24 VAC (Minimum) 25 V at 24 VAC (Maximum) Input Voltage. . . . . . . . . . . . . . . . . . . . . . . 24 VAC nominal Total Power Consumption. . . . . . . . . . . . . 0.5 VA (relay de-energized) 4.0 VA (relay energized) **www.white-rodgers.com** 80
Updated at June 3, 2026
About Novapart
Novapart is a B2B electronic component broker specialising in stock shortages and cost reduction. We source hard-to-find parts and identify compliant alternatives across a catalogue of 410,000+ components from 500+ manufacturers.
Learn more →Stock Shortage Specialist
When a component is unavailable, discontinued or has an unacceptable lead time, we tap into our network of vetted European and Asian distributors to source what you need — without compromising on quality or traceability.
Request a quote →Compliant Alternatives
We identify pin-to-pin, electrically equivalent substitutes that meet the same certifications (RoHS, AEC-Q100, REACH) as your original specification — validated against datasheets, not just part numbers. Often at a lower cost.
BOM Analysis service →