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H3RN-2-B AC24

Solid-state timer


24 VAC 50/60 Hz, Output Time-limit: DPST-NO, ON delay/Interval/Flicker ON start/Flicker OFF start, Time range: 0.1 to 1 s (4 range), 8-pin

Rated power supply voltage 24 VAC 50/60 Hz
Control output (Type) Time-limit: DPST-NO
Connecting method 8-pin round socket (Push-In Plus Terminal Block)

Item list of H3RN-[]-B

  • Ratings/Specifications
Rated power supply voltage24 VAC 50/60 Hz
Allowable voltage variable range85 to 110% of the power supply voltage
Power consumptionRelay ON: Approx. 0.8 VA
Reset voltage10% max. of rated supply voltage
Number of time ranges4
Operation modeON delay, Interval, Flicker ON start, Flicker OFF start
Control output (Type)Time-limit: DPST-NO
Control output (Contact output)Resistive load: 3 A at 250 VAC (cosφ=1)
Minimum applicable load: 10 mA at 5 VDC (failure level: P Reference value)
Ambient temperature rangeOperating: -10 to 55 ℃ (with no icing)
Storage: -25 to 65 ℃ (with no icing)
Ambient humidity rangeOperating: 35 to 85%
Accuracy of operating time±1% FS max. (±1% ±10 ms in a range of 1 s)
Setting error±15% FS ±50 ms max.
Reset time0.5 s max. (including halfway reset)
Influence of voltage±2% FS max.
Influence of temperature±2% FS max.
Insulation resistance100 MΩ min. (at 500 VDC)
Dielectric strengthBetween operating power circuit and control output: 2,000 VAC 50/60 Hz 1 min
Between contacts of different polarity: 2,000 VAC 50/60 Hz 1 min
Between non-continuous contacts: 1,000 VAC 50/60 Hz 1 min
Impulse withstand voltageBetween power terminals: 1 kV
Noise immunity±1.5 kV square-wave noise by noise simulator (pulse width: 100 ns/1 µs, 1-ns rise)
Static immunityMulfunction: 4 kV, Destruction: 8 kV
Vibration resistanceDestruction: 10 to 55 Hz, 0.75 mm single amplitude each in 3 directions for 1 hour
Malfunction: 10 to 55 Hz, 0.5 mm single amplitude each in 3 directions for 10 min
Shock resistanceDestruction: 980 m/s2, 3 times each in 6 directions
Malfunction: 100 m/s2, 3 times each in 6 directions
Life expectancy (relay output)Electrical: 100,000 operations min. (3 A at 250 VAC, resistive load at 1800 operations/h)
Mechanical: 10 million operations min. (under no load at 1,800 operations/h)
Degree of protectionIP40 (excluding terminal section)
Connecting method8-pin round socket (Push-In Plus Terminal Block)
Case colorBlack
WeightApprox. 18 g
  • Dimensions

Outline drawing

  • Internal connection

Internal connection

  • Operating chart

Operating chart

ON delay


Flicker OFF start

Flicker ON start


Solid-state timer