Emerson SureSwitch Relay
Emerson SureSwitch Relay
Item # 49P11-843

Universal Electronic Upgrade for Mechanical Compressor Contactors

Features and Benefits
  • Microprocessor controlled sealed compressor switching
  • Line voltage brownout protection
  • Short cycle protection
  • Tri-color LED display
  • Heavy-duty lug connectors
  • Zero chatter latching relay
  • Four-hole mounting matches mechanical contactors
  • Random start delay on power up and brownout recovery
  • Compressor test and cycle count by push-button
  • 5-year warranty
Product Specifications
2.75” x 3.875” x 2.375” (WHD)
Operating Voltage
240VAC, 50/60 Hz
Full Load Amperes
Lockout Rotor Amperes
Control Voltage
24VAC, 50/60 Hz
Operating Temperature
-40° to 158° F
Operating Humidity
5% - 95% non-condensing
Short Cycle Protection
Up to 180 seconds at 60 Hz; Up to 216 seconds at 50 Hz


April 2015 - Newsletter
The April newsletter features the Hot Pod, the SureSwitch Relay and Jackson Systems employee news.

Emerson Training
Emerson Training

Get ready for the heating season!

Learn about:

  • Universal Hot Surface Igniters
  • Integrated Furnace Control Kits
  • Hot Surface Ignition Modules
  • Spark Ignition Modules

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