SureSwitch™ Relay - 49P11-843

Emerson SureSwitch™ Relay - 49P11-843


More Videos
Emerson SureSwitch Video
Contractor Installation Video
Universal Electronics Upgrade for Mechanical Compressor Contactors

5x contactor life

Sealed to keep out ants and debris

Microprocessor-controlled sealed compressor switching

Protects compressor from brownouts and short cycling

Ideal for Preventative Maintenance contracts

Microprocessor controlled sealed compressor switching

Line voltage brownout protection

Short cycle protection

Tricolor LED displays

Heavy-duty lug connectors

Zero chatter latching relay

Four-hole mounting matches mechanical contactors

Random start delay on power up and brownout recovery

Electrical Ratings
Line Voltage Input - 208/240 VAC, 50/60 Hz
Locked Rotor Amperes (LRA) - 200A
Selectable Energy Management Recovery
Control (Coil) Voltage (Y, C) - 24 VAC, 50/60 Hz

Operating Temperature Range
-40° to 158° F (-40° to 70° C)

Humidity Range
5 to 95% relative Humidity (non-condensing)

1 Pole or 1.5 Pole Applications
  • SureSwitch Relay breaks only one leg of the incoming 220VAC power and has an un-switched brass shunt on the second leg.
  • In most cases SureSwitch can also replace an existing 2 pole contactor, however, the condenser cannot have any switched 120V internal loads in these applications.
Brownout Protection
  • Auto shut off when line voltage drops below 180Vac for more than 4 seconds.
Short Cycle Protection
  • 0s or 180s selectable delay between cycles to extend the life of the compressor.
Random Start Delay
  • Delays operation for 3 minutes plus a 5-90 second random delay after power outage to protect the compressor and avoid brownouts.

2-3/4" W x 2-3/8" H x 3-7/8" L
With Universal Mounting & Wiring Adapter

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