Dimensions
• LT4H-W digital timer
(units: mm
inch
)
Tolerance:
±
1.0
±
.039
• Dimensions for flush mount (with adapter installed)
• Dimensions for front panel installations
• Installation panel cut-out dimensions
The standard panel cut-out dimensions are shown
below. Use the mounting frame (AT8-DA4) and rub-
ber gasket (ATC18002).
• For connected installations
Note) 1: The installation panel thickness should be between 1
and 5 mm
.039 and .197 inch
.
Note)
2: For connected installations, the waterproofing ability
between the unit and installation panel is lost.
LT4H-W
SET/LOCK
DOWN
T2
T1
LOCK
TIMER
RESET
T2
OP.
T1
m
UP
h
s
48
1.890
44.5
1.752
44.5
1.752
7.5
.295
5.5
55.6
14.5
.217
2.189
.571
(Same for 8-pin type)
5.5
64.5
.217
2.539
7.5
.295
Screw terminal type
(Flush mount)
Screw terminal type
Pin type
Pin type
(Flush mount/Surface mount)
UP
DOWN
SET/LOCK
RESET
TIMER
LOCK
T2
OP.
T1
T2
T1
m
h
s
LT4H-W
SET/LOCK
RESET
TIMER
T2
T2
LOCK
T1
OP.
T1
DOWN
UP
LT4H-W
m
h
s
Panel
Rubber gasket
ATC18002 (supplied)
48
1.890
48
1.890
48
1.890
1.890
50
1.969
1
63.5
2.500
66
2.598
50
1.969
66
2.598
1
44.5
1.752
Mounting frame
AT8-DA4 (supplied)
48
Rubber gasket
ATC18002 (supplied)
Panel
AT8-DA4 (supplied)
90
3.543
(11p cap AT8-DP11
sold separately)
(8p cap AD8-RC
sold separately)
11-pin type
8-pin type
for flush mount
for flush mount
Mounting frame
( ) dimension is for 8-pin type.
(90.0)
95.5
(3.543)
3.760
AT8-DLA1
(sold separately)
Device installation rail
(11-pin type AT8-DF11K
sold separately)
DIN rail terminal block
(8-pin type AT8-DF8K
sold separately)
80min.
3.150min.
80min.
3.150min.
45
0
+0.6
1.772
0
+.024
45
0
+0.6
1.772
0
+.024
45
0
+0.6
1.772
0
+.024
A=(48
×
n – 2.5)
+0.6
0
A=(1.890
×
n – .098)
+.024
0
A
When n timers are continuously installed, the dimension
(A) is calculated according to the following formula (n:
the number of the timers to be installed):
LT4H-W
Applicable standard
Safety standard
EN61812-1
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)
1 kV (signal 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)
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Matsushita Electric Works, Ltd.
