TNPL Single Shot Timers, IC Digital Timing Circuits, Airotronics


TNPL Single Shot Timers For IC Digital Timing Circuits

TNPL Single Shot Timers For IC Digital Timing Circuits
TNPL Timers

The TN Single Shot on Make units meet the needs of customers who require IC digital timing circuits with octal, magnal round and QC bases for plug-in installation. The units are available in SPDT, DPST and DPDT relay forms up to 10 amp with fixed or adjustable time periods.


Timing Mode

Power must be applied to the input voltage terminals continuously. Upon closure of a Normally Open (N.O.) external initiate switch, the load is instantaneously energized and the time delay cycle starts. Maintained closure or actuation of the external initiate switch during the delay cycle will not affect the time delay period. When the delay period expires, the timer will reset to its original position and the timer is ready for another cycle.

  • CMOS IC digital timing
  • Multi-board construction
  • Relays are sealed
  • Proven circuitry
  • Standard octal (8 pin), magnal (11 pin) plug-ins or 4.75 mm (.187") blade terminal mountings
  • Fixed or variable time adjustment
  • Optional remote time adjustment
  • Timing ranges from .05 to 1000 seconds standard (special time settings and ranges up to 72 hours also available)
  • 0.1% Repeat accuracy
  • 100% Operational testing before shipping
Input Voltages:
  • VAC: 12, 24, 120,230,50/60/ Hz
  • VDC: 12, 24

Operating Voltage: ±20% of nameplate voltage

Relay Contact Ratings: 5 amps DPDT, 10 amp DPDT optional

Repeat Accuracy: ±0.1% under fixed operating conditions

Reset Time: 50 milliseconds

Tolerances: Fixed: ±10%, Optional: ±5%, ±1% Variable: +20%, -0 Optional:+10%, -0%
Note: Tolerances on variable units are with respect to
upper limit only. Timers with time periods greater than 10 sec. will have a 100 to 1 ratio, i.e., 1 to 100 seconds, 30 to
3000 seconds. Timers with time periods less than 10 sec. will have a 10 to 1 ratio, i.e., .99 to 9.9 seconds, .5 to 5 seconds.

Life Expectancy:
  • Mechanical: 1 million operations
  • Electrical: Up to 100,000 operations at full current load
  • Polarity Protection: All DC units have reverse polarity protection
  • Transient Protection: 25 joules
Temperature Ranges:
  • Storage: -40°C + 85°C
  • Operating: -25°C to +85°C
Housing Material: High Impact, UL approved black Lexan

Mode of Operation Series Input Voltage Time Ranges Tolerance Time Adjust. Method Base Style Options
Single Shot
On Make with
Isolated Cntrl. Sw.
or Input
Volt Cntrl. Sw.
TNPL 1 120 VAC
2 230 VAC
3 24 VAC
4 24 VDC

7 12 VDC
8 Special AC
9 Special DC
(Fixed: ±10%
Variable: +20% 10%)

E Optional
(Fixed: ±5%)

F Optional
(Fixed: ±1%)

G Optional
(Adjust.: +10%, -0%)
A Variable knob on timer

B Variable with external peotentiometer, AOT supplied

D Factory fixed time

C Factory fixed time with customer supplied resistor

1 8 pin round octal base

2 11 pin round magnal

3 11 pin spade .187 quick connect

X Standard 5 amps

H 10 amps (8 amps UL Recognized for USA and Canada)

0001 .1 to 1 sec.
0010 .1 to 10 sec.
0100 1 to 100 sec.
1000 10 to 1000 sec.
Any range up to 72 hours available on special order
Specify time in full seconds or hours followed by the letter "S" or "H" and the decimal amount of the main time unit and the decimal amount of the main time unit.
Examples: 5S5 is 5.5 secs.
5H5 is 5.5 hours

Site Design: Process Controls And Instrumentation