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Macromatic THR-3856U Dual Time Encapsulated Time Delay Relay

Macromatic THR-3856U Time Delay Relay
Macromatic THR-3856U Dual Time Encapsulated Time Delay Relay

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Our Price: $67.06
MFG P/N: THR-3856U
MFG: Macromatic
Weight (lbs): 0.5

Delivery Time: 5-10 Business Days
Product Code: THR-3856U


The Macromatic THR-3856U is a programmable Time Delay Relay. This encapsulated, multi-range, multi-voltage relay has an input voltage of 24-240V AC and a 12-125V DC. It is a dual time, multi-function unit with 4 different settings and a time range of 0.1 sec to 1000 minutes. The THR3856U has an output of 10A SPDT which accommodates pilot duty and fractional HP loads. The ON & OFF times can be set or changed separately from each other. Featuring dimensions of 2" x 2", the encasement of the unit allows it to be used under more extreme conditions. Settings are made using DIP switches.

Repeat Cycle Off
Repeat Cycle On
Delayed Interval
Delayed Interval (Triggered)
Time Delay Options
Onboard Adjustable Time Delay
Onboard Fixed Time Delay


  • Relay Function- Multi-Function
  • Mounting Style- Surface Mount using a #8 or #10 screw
  • Termination- 0.25" Male Quick Connect Terminals
  • Relay Timing Range- 0.1 Sec - 1000 min
  • Input Voltage- 24-240V AC, 12-125V DC
  • Output- 10A SPDT
  • Voltage Tolerance- AC Operation: +10/-15% of nominal at 50/60 Hz.
    DC Operation: 10/-15% of nominal.
  • Load- 2VA
  • Setting Accuracy- Maximum Setting (Adjustable): +5%, -0%
    Minimum Setting (Adjustable): +0%, -50%
  • Repeat Accuracy- The greater amount of +/- 0.1% or +/- 0.04 Sec
  • Reset Time- Triggered with Input Voltage: 100ms
    Triggered with Control Switch: 40ms
  • Startup Time- 0.05 sec
  • Maintain Function Time- 0.01 sec
  • Operating Temperature- -28 C to 65 C (-18 F to 149 F)
  • Storage Temperature- -40 C to 85 C (-40 F to 185 F)
  • Output Contacts- 10A @ 240VAC / 7A @ 28VDC SPDT, 1/4hp @ 120VAC (N.O.)
  • Life- Mechanical: 10,000,000 Operations, Full Load: 100,000 Operations
  • Overall Dimensions- 2" H x 2" W x 1.14" D
  • Approvals- UL and CUL recognized

Macromatic THR Series Relay Installation Instructions

THR-3856U Dual Time Macromatic Time Delay Relay