TH4 Series (Single F13)


Lead Time: 10 Days

$117.88 (USD) / EACH

Description Of Function

Upon application of input voltage, the time delay relay is ready to accept a trigger. When the trigger is applied, the output is energized and the time delay (t) begins. At the end of the time delay (t), the output is de-energized unless the trigger is removed and re-applied prior to time out (before time delay (t) elapses). Continuous cycling of the trigger at a rate faster than the time delay (t) will cause the output to remain energized indefinitely.

Function Chart

Product Overview

  • Microprocessor-based for superior accuracy and repeatability
  • 30 Amp heavy-duty switching
  • Controls heavy loads without a separate contactor
  • Horsepower ratings up to 2HP @ 240V AC
  • Control voltages of 240V AC/DC, 120V AC/DC, 48V AC/DC, 12V DC and 24V AC/DC
  • Adjustable on-board potentiometers, remote potentiometers, or factory-set fixed time delays
  • High-contrast markings make connection and operation simple.
  • Quick-connect terminals for easy wiring
Enclosure Style

Encapsulated 2” x 3” enclosure with single screw mounting

Configuration / Contact Rating
Ratings SPDT (NO Contact) SPDT (NC Contact)
AC 240VAC G.P. 30A 15A
DC 28VDC RES. 20A 10A
Motor Load 115/120/125 1 HP 1/4 HP
Motor Load 230/240/250 2 HP 1/2 HP
Application Information
  • Voltage Tolerance: AC Operation: +10/-15% of nominal at 50/60 Hz; DC Operation: +10/-15% of nominal
  • Load (Burden): Maximum of 3 VA for all voltages
  • Setting Accuracy: Maximum Setting (Adjustable): +5%, -0%; Minimum Setting (Adjustable): +0%, -50%; Fixed Time Delay: +2% or 50ms, whichever is greater
  • Repeat Accuracy: Constant voltage and temperature: +0.1% or + 0.04 seconds, whichever is greater; Changing voltage and temperature within limits: +5% or + 0.1 seconds, whichever is greater.
  • Reset Time: Triggered with Input Voltage: 100ms; Triggered with Control Switch: 40ms
  • Start-up Time: Time from when power is applied until unit is timing: 0.05 seconds
  • Maintain Function Time: Time unit continues to operate after power is removed:  0.01 Seconds. Interruptions longer than this time may reset the timing cycle; Units Triggered by a Control Switch: Minimum required trigger switch closure time is 50ms.
  • Temperature: Operating: -28o to 65o C (-18o to 149o F); Storage: -40o to 85o C (-40o to 185o F)
  • Life: Mechanical: 10,000,000 operations; Full Load: 100,000 operations
UL #: E109466


Time-based control with high amperage switching allows effective and economical operation of heavy loads such as pumps, compressors, and heaters. This cost-effective solution can eliminate the need for a separate contactor reducing cost and saving space. Choose from adjustable on-board potentiometers, remote potentiometers, or factory-set fixed time delays.

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  • Function: Undercurrent only
  • Control Voltage: 24V AC/DC
  • Output: 10A SPDT
  • Trip Delay: 0.5-50 seconds
  • Enclosure Style: Encapsulated
  • Current Range: 5 - 50A
  • Sensing Delay On Power: 5 seconds
  • Communication Platform: None
  • Monitored Voltage: 102-138V AC
  • Output: 10A SPDT
  • Protection: Phase Loss, Phase Reversal, Voltage Unbalance, Undervoltage & Overvoltage
  • Standard Modifications: None
  • Enclosure Style: Plug-in
  • Control Voltage: 120V AC
  • Output: 4 Form C Contacts
  • Options: Standard (LED and Push-to-Test Included)
  • Terminal Configuration: Blade