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DIN 48 SIZE
DIGITAL TIMER

LT4H-L
Timers

Features

1. Economically priced in anticipation
of market needs.
• Economically priced to provide

excellent cost performance.

2. Display is a bright reflective-type
LCD.
3. Inherits all of the characteristics of
the LT4H digital timer.
• Seesaw switches ensure easy

operation.

• IP66 environmental protection.
• Shortened body (70.1 mm 

2.760 inch

underhead).

4. UL, C-UL rating approved. CE
compliant.
5. Simultaneous release of DIN48
protective cover (soft type).
• Provides protection for surface and

buttons in dusty environments and from
dirty hands and gloves.

48

1.890

48

1.890

64.5

2.539

Part names

Time delay indicator

DOWN

UP

LOCK

RESET

s

m

h

L O C K

R S T

O P.

ON

8

7

6

5

4

3

2

1

Elapsed time display

DIP switches

Set time display

Time units display

Up keys

Down keys

Controlled output indicator

Reset indicator

Lock indicator

Reset switch

Lock switch

TIMER

LT4H

(Countdown time display)

Product types

UL File No.: E122222
C-UL File No.: E122222

mm 

inch

Time range

Product name

Operating mode

Output

Operating voltage

Power down

insurance

Terminal type

Part number

9.999 s (0.001 s~)
99.99 s (0.01 s~)
999.9 s (0.1 s~)
9999 s (1 s~)
99 min 59 s (1 s~)
999.9 min (0.1 min~)
99 h 59 min (1 min~)
999.9 h (0.1 h~)

DIN48 protective cover (soft type)

LT4H-L

digital timer

Option

Power ON delay (1)
Power ON delay (2)

Signal ON delay

Signal OFF delay

Pulse One-shot

Pulse ON-delay

Signal Flicker

Totalizing ON-delay

(8 modes)

Relay

(1 c)

Transistor

(1 a)

For the LT4H Series

100 to 240 V AC

24 V AC/DC

100 to 240 V AC

24 V AC/DC

12 to 24 V DC

12 to 24 V DC

Available

8 pins

LT4HL8-AC240V

LT4HL8-AC24V

LT4HLT8-AC240V

LT4HLT8-AC24V

LT4HL8-DC24V

LT4HLT8-DC24V

N-TC-48-1

LT4HL  02.1.9 6:25 PM  Page 1

Summary of Contents for LT4H-L

Page 1: ...lay DIP switches Set time display Time units display Up keys Down keys Controlled output indicator Reset indicator Lock indicator Reset switch Lock switch TIMER LT4H Countdown time display Product typ...

Page 2: ...ontact Electrical contact Allowable operating voltage range Breakdown voltage Initial value Insulation resistance Initial value Operating voltage reset time Temperature rise Functional Destructive Vib...

Page 3: ...between the unit and installation panel is lost LT4H TIMER RESET LOCK UP h m s OP RST LOCK DOWN M48 M1 890 M44 5 M1 752 55 6 2 189 14 5 571 5 5 217 7 5 295 Embedded installation front panel installat...

Page 4: ...of the set time in the subtraction direction downwards P RESET switch Resets the elapsed time and the output LOCK switch Locks the operation of all keys on the unit 9 8 7 2 3 4 5 6 11 10 DOWN UP LOCK...

Page 5: ...power outage countermeasure func tion The output remains ON even after the power is cut and restarted After timer completion stops at the display of the set value addition or stops at 0 sub traction I...

Page 6: ...1 2 and 3 on the side of the timer as shown Clears elapsed time value at power ON Time delay starts at start ON Ignores start input during time delay In order to have the time delay start at power ON...

Page 7: ...ted transformer Single coil trance AC power supply AC power supply Fig A Input contact point or transistor Input terminal Power supply 1 2 7 1 2 7 Input terminal Fig B Input contact point or transisto...

Page 8: ...an 40V DC because it may destroy the internal circuitry 5 Transistor output 1 Since the transistor output is insulated from the internal circuitry by a photocoupler it can be used as an NPN output or...

Page 9: ...1 496 Rear terminal socket Part No AT78041 31 4 dia 1 236 dia 32 5 dia 1 280 dia 34 6 1 362 26 1 024 8 6 339 8 315 30 dia 1 181 dia 14 dia 551 dia 1 2 3 4 5 6 7 8 31 4 dia 1 236 dia 34 6 1 362 30 dia...

Page 10: ...terproofing characteristic is lost 4 Installation Loosen the screws on the mounting frame spread the edge of frame and remove it 5 Correctly connect the pins while seeing the pin connection diagram 6...

Page 11: ...o n l i n e c o m p o n e n t s c o m 11 LT4HL 02 1 9 6 25 PM Page 11...

Page 12: ...shita Electric Works China Co Ltd Shanghai Branch Office Guangzhou Matsushita Electric Works China Co Ltd Guangzhou Branch Office Dalian Matsushita Electric Works China Co Ltd Dalian Branch Office She...

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