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PM4H-W Twin Timers


UL/C-UL , CE , Lloyd Approved

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1.A single twin timer unit that repeats (variable) ON/OFF.

2.Multiple ranges with a 0.1 s to 500 h time specification on a single unit.

3.The output ON/OFF operation is indicated by red and green LED’s. It’s easy to check the operation at a glance.

4.The AC free power supply and shorter body make it easier to use.

5.A new screw terminal type has been added to the conventional pin type. Wiring can be done easily with a screwdriver.

6.Compliant with UL, CSA, CE and LLOYD.


Time Range

All types of PM4H-W timer have multi-time range.
16 time ranges are selectable.
1s to 500h (Max. range) is controlled.

Time unit sec min hrs 10h
1 Control time range 0.1s to 1s 0.1 min to 1 min 0.1h to 1h 1.0h to 10h
5 0.5s to 5s 0.5 min to 5 min 0.5h to 5h 5h to 50h
10 1.0s to 10s 1.0 min to 10 min 1.0h to 10h 10h to 100h
50 5s to 50s 5 min to 50 min 5h to 50h 50h to 500h





Type Item PM4H-W
Rating Rated operating voltage 100 to 240V AC, 12V DC, 24V AC/DC, 48 to 125V
Rated frequency 50/60Hz common (AC operating type)
Rated power consumption Approx. 10VA (100 to 240V AC) Approx. 2.5VA (24V AC) Approx. 2W (12V DC, 24V DC, 48 to 125V DC)
Output rating 5A 250V AC (resistive load)
Operation mode Cyclic (OFF-start/Twin operation)
Time range 1s to 500h 16 time ranges switchable (T1, T2time setting individually)
Time accuracy Note:) Operation time fluctuation ±0.3% (power off time change at the range of 0.1s to 1h)
Setting error ±5% (Max. setting time value)
Voltage error ±0.5% (at the operating voltage changes between 85 to 110%)
Temperature error ±2% (at 20°C ambient temp. at the range of -10 to +50°C/ +14 to +122 °F)
Contact Contact arrangement Timed-out 2 Form C
Contact resistance (Initial value) Max. 100mohm (at 1A 6V DC)
Contact material Silver alloy
Life Mechanical 2×107
Electrical 105(at rated control capacity)
Electrical function Allowable operating voltage range 85 to 110% of rated operating voltage (at 20°C coil temp.)
Insulation resistance (Initial value) Min. 100Mohm Between live and dead metal parts Between input and output Between contacts of different poles Between contacts of same pole (At 500V DC)
Breakdown voltage (Initial value) 2, 000Vrms for 1 min Between live and metal parts 2, 000Vrms for 1 min Between input and output 2, 000Vrms for 1 min Between contacts of different poles 1, 000Vrms for 1 min Between contacts of same pole
Min. power off time 300ms
Max. temperature rise 55°C/ 131 °F
Mechanical function Shock resistance Functional Min. 98m/s2(4 times on 3 axes)
Destructive Min. 980m/s2(5 times on 3 axes)
Vibration resistance Functional 10 to 55Hz: 1 cycle/min double amplitude of 0.5mm (10min on 3 axes)
Destructive 10 to 55Hz: 1 cycle/min double amplitude of 0.75mm (1h on 3 axes)
Operating condition Ambient temperature -10 to +50°C/ +14 to +122 °F
Ambient humidity Max. 85%RH
Atmospheric pressure 860 to 1, 060hPa
Ripple factor (DC type) 20%
Others Protective construction IP65 on front panel (using rubber gasket ATC 18002) (only for IP65 type)
Weight 120g/ 4.233 oz (Pin type), 130g/ 4.586 oz(Screw terminal type)
  1. Unless otherwise specified, the measurement conditions at the maximum scale time standard are specified to be the rated operating voltage (within 5% ripple factor for DC), 20℃/ 68℉ ambient temperature, and 1s power off time.
  2. For the 1s range, the tolerance for each specification becomes ±10ms.