Solid-state Timer H3FA

• Four time ranges are selectable.
Models suffixed -[]A[]: 1 s, 10 s, 1 min, 10 min.
Models suffixed -[]B[]: 6 s, 60 s, 6 min, 60 min.

• Timer can be cleaned while mounted on a PC Board with the sealing tape affixed.

• Twenty-four-pin IC socket can be used for mounting the Timer.

• Mountable on a 1-inch pitch rack.
(H 19.5 × W 36.9 × D 17.75 mm)

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Description

Time Ranges

 

Model Rated time Time setting range
H3FA-A 1 s 0.1 to 1 s
H3FA-AU 10 s 1 to 10 s
H3FA-SA 1 min 0.1 to 1 min
H3FA-SAU 10 min 1 to 10 min
H3FA-B 6 s 0.6 to 6 s
H3FA-BU 60 s 6 to 60 s
H3FA-SB 6 min 0.6 to 6 min
H3FA-SBU 60 min 6 to 60 min

 

 

Note: 1. The above timing ranges apply when the internal variable resistor of H3FA is used.
2. The external variable resistor may also be used by opening the terminal connected to the internal variable
resistor.
3. Wire the appropriate terminal to select a time setting range. Refer to Rated Time and Terminal Connections on
Data Sheet for details.

 

Ratings

 

Item H3FA-A/ H3FA-B
H3FA-AU/ H3FA-BU
H3FA-SA/ H3FA-SB
H3FA-SAU/ H3FA-SBU
Rated supply voltage 5 V DC, 6V DC, 12V DC, 24 V DC *1 5/6 V DC *1
12/24 V DC *1, *2
Operating voltage range 5 V DC: 90% to 110% of rated supply voltage
6, 12, 24 V DC: 85% to 110% of rated supply voltage
Power consumption 5, 6 V DC: approx. 230 mW
12 V DC: approx. 270 mW
24 V DC: approx. 330 mW
5/6 V DC: approx. 80 mW
12 V DC: approx. 100 mW
24 V DC: approx. 240 mW
Control outputs Contact output: SPST-NO + SPST-NC,
3 A at 250 V AC with resistive load,
Minimum applied load: 10 mA at 5 V DC
(Failure level: P, reference value)
Solid-state output: 150 mA max. at 30 V DC
Residual voltage: 1.0 V max.
Ambient temperature Operating: -10°C to 55°C (with no icing)
Storage: -25°C to 65°C (with no icing)
Ambient humidity 35% to 85%

 

H3FA Specifications 4

Characteristics

 

Accuracy of operating
time
±0.5% FS max. *1, *3
Setting error 0 to 30 % FS max. (at 20°C , at rated voltage)
Reset time 10 ms max.
Influence of voltage ±1% FS max. (2% FS max. for 5, 6, 5/6 V DC-operated models)
Influence of temperature ±5% FS max. *1
Insulation resistance 100 MΩ min. (at 500 V DC)
Dielectric strength 1,500 V AC, 50/60 Hz for 1 min (between control output and operating circuit) *2
1,000 V AC, 50/60 Hz for 1 min (between contacts not located next to each other) *2
Vibration resistance Destruction: 10 to 55 Hz with 0.375-mm single amplitude in 3 directions for 2 hour each
Malfunction: 10 to 55 Hz with 0.25-mm single amplitude in 3 directions for 10 minutes each
Shock resistance Destruction: 1,000 m/s2 3 times each in 6 directions on 3 axes
Malfunction: 100 m/s2 3 times each in 6 directions on 3 axes
Life expectancy Mechanical: 10,000,000 operations min. (under no load at 1,800 operations/h) *2
Electrical: 100,000 operations min. (3 A at 250 V AC, resistive load at 1,800 operations/h) *2
Approved safety
standards
UL508, CSA C22.2 No.14
Weight Contact output models: approx. 15 g
Solid-state output models: approx. 10 g

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