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DIN48 SIZE
HOUR METER
TH14·TH24
Hour Meters
80.5
3.169
48
1.890
48
1.890
Silver panel
mm inch
Black panel
TH24 series (with reset button)
Silver panel
Black panel
TH14 series (without reset button)
RoHS Directive compatibility information
http://www.nais-e.com/
UL File No.: E42876
CSA File No.: LR39291
Features
1. High-performance compact syncronous motor
The accurately turning motor is employed to provide for longer
period of measurement.
2. Common for 50/60 Hz power frequency
A lever is used to select 50 Hz or 60 Hz. There is no need to
rearrange the control panel and other signal destinations.
3. Dimensions as per DIN 43700 standard
The units are in the 48 × 48 DIN standard size. They can be fit-
ted in panels and give refined metallic appearance.
4. Easier wiring
The flat terminals (#187) are quick and easy to connect.
5. Rotary indicator
The rotary indicator makes one turn every 2 minutes for moni-
toring.
6. Compliant with UL, CSA and CE.
Typical applications
Maintenance management of machine tools, automated
machines, control panels, forming machines, medical equip-
ment, generators, compressors, water treatment facilities,
presses, motors, etc.
Specifications
Rated operating voltage
Allowable operating voltage range
Rated frequency
Counting range
Minimum time display
Rated power consumption
Insulation resistance (Initial value)
Breakdown voltage (Initial value)
Max. temperature rise
Vibration resistance
Functional
Shock resistance
Functional
Destructive
Ambient temperature
Ambient humidity
Weight
12 V AC, 24 V AC, 48 V AC, 100 V AC, 110 V AC, 115 to 120 V AC, 200 V AC, 220 V AC, 240 V AC
85 to 115% of rated operating voltage
50/60 Hz (selectable by switch)
0 to 99999.9 hours (TH14 series)
0 to 9999.9 hours (TH24 series)
0.1 hours (6 min)
Approx. 1.5 W
Min. 100 M; Between live and dead metal parts (At 500V DC)
2,000 Vrms Between live and dead metal parts
55°C 131°F
10 to 55 Hz: 1 cycle/min double amplitude of 0.5 mm (10 min on 3 axes)
Min 98 m/s2 {10 G} (4 times on 3 axes)
Min 980 m/s2 {100 G} (5 times on 3 axes)
–10 to +50°C +14 to +122°F
Max. 85% RH (non-condensing)
145 g 5.11 oz (TH14 series)
150 g 5.29 oz (TH24 series)
Product types
Type
Operating
voltage
Part number
Silver panel Black panel
Operating
voltage
Part number
Silver panel Black panel
Operating
voltage
Part number
Silver panel Black panel
TH14 series
(without reset
button)
100V AC
200V AC
12V AC
TH141S
TH142S
TH143S
TH141
TH142
TH143
24V AC
48V AC
110V AC
TH144S
TH145S
TH146S
TH144
TH145
TH146
115 to 120V AC
220V AC
240V AC
TH147S
TH148S
TH149S
TH147
TH148
TH149
TH24 series
(with reset
button)
100V AC
200V AC
12V AC
TH241S
TH242S
TH243S
TH241
TH242
TH243
24V AC
48V AC
110V AC
TH244S
TH245S
TH246S
TH244
TH245
TH246
115 to 120V AC
220V AC
240V AC
TH247S
TH248S
TH249S
TH247
TH248
TH249
Note) Only the black-panel type is UL-recognized and CSA-certified. For this type, specify “U” at the end of the part number when ordering.
168

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TH14·TH24
Applicable standard
Safety standard
EN61010-1
Pollution Degree 2/Overvoltage Category II
EMC
(EMI)EN61000-6-4
Radiation interference electric field strength
Noise terminal voltage
(EMS)EN61000-6-2
Static discharge immunity
RF electromagnetic field immunity
EFT/B immunity
Surge immunity
Conductivity noise immunity
Power frequency magnetic field immunity
Voltage dip/Instantaneous stop/Voltage fluctuation immunity
EN55011 Group1 ClassA
EN55011 Group1 ClassA
EN61000-4-2 4 kV contact
8 kV air
EN61000-4-3 10 V/m AM modulation (80 MHz to 1 GHz)
10 V/m pulse modulation (895 MHz to 905 MHz)
EN61000-4-4 2 kV (power supply line)
EN61000-4-5 1 kV (power line)
EN61000-4-6 10 V/m AM modulation (0.15 MHz to 80 MHz)
EN61000-4-8 30 A/m (50 Hz)
EN61000-4-11 10 ms, 30% (rated voltage)
100 ms, 60% (rated voltage)
1,000 ms, 60% (rated voltage)
5,000 ms, 95% (rated voltage)
Dimensions (TH14 and TH24 series common)
mm inch
General tolerance: ±1.0 ±.039
Case
Mounting
bracket (supplied)
Decorative
nut
No.187 quick
connect terminal
(4.7 × 6.0 × 0.5)
(.185 × .236 × .020)
48
1.890
Rotary
indicator
5.5
.217
75
2.953
94
3.701
50
1.969
60Hz 44.8
1.764
50Hz
Frequency setting switch
Wiring diagram
M
Operating power supply
Panel mounting
Panel
Mounting
Case bracket (supplied)
Decorative
nut
50
1.969
• Panel cutout dimensions
45
+0.6
0
1.772
+.024
0
mm inch
5.5
.217
88.5
3.484
169