Universal, Voltage, Solid-State Timers, THCU1023E Timers, Airotronics


Universal Voltage Solid-State Timers - THCU1023E Timers

Universal Voltage Solid-State Timers - THCU1023E Timers
THCU1023E Timer

THCU1023E is a universal voltage solid-state timer in a compact 2" x 2" configuration. This unit will operate from 19 VAC up to 265 VAC and from 10 VDC up to 120 VDC. Any time period between 1 second and 1023 seconds is available in 1 second increments and can be set with the dip switch.

The advanced digital circuitry provides this timing module with unsurpassed accuracy and reliability.


Timing Mode

Application of input voltage to the timer starts the time delay. At the end of the delay period, the load is energized. To reset, remove the input voltage to the timer.

  • Wide operating voltage, one model operates from 19-265 VAC and 10-120 VDC
  • Operates at 50/60Hz
  • DC polarity independent
  • Time range of 1 to 1023 seconds in 1 second increments
  • Binary dip-switch is easy to program
  • Digital timing accuracy
  • Time setting accuracy of 5% of set point
  • Repeatability of 0.1%
  • Extremely low off-state leakage current
  • Eliminates contactor “hum”
  • Compact, easy to hook up, in-line installation
  • Vertical mounting option available with MB-1 Bracket
  • Totally encapsulated for protection from harsh environments
  • 100% Operational testing before shipping

Repeat Accuracy: ±0.1% under fixed conditions

Time Range: 1 - 1023 seconds in 1 sec. increments

Reset Time: 25 milliseconds after timing cycle
200 milliseconds during timing cycle

Timing Tolerances: ±10% max/±5% typical

Operating Voltage: 19-265 VAC/10-120 VDC 50/60 Hz

Mode of Operation: Delay on Make

Operating Temperature: -25°C to +85°C

Transient Protection: 18 joules/ varister

Voltage Drop in"On" State: 4 volts max/ 3 volts nominal @ 1 amp peak

Output Leakage Current in "Off" State:

  • 6.4 mA @ 265 VAC
  • 3.3 mA @ 120 VAC
  • 1.6 mA @ 48 VAC
  • 1.0 mA @ 24 VAC

Switching Current:

  • 1 amp steady state max.
  • 10 mA min.
  • 10 amps inrush
Mode of Operation Series Input Voltage Time Ranges Time Adjustment Method
Delay On Make THC Standard size (2"x2")  
U 19-265 VAC

10-120 VDC

1 to 1023 sec. (in 1 sec. increments)

Site Design: Process Controls And Instrumentation