Free shipping above $250
0 items$0.00

No products in the cart.

LT4H-L Digital Timers

Maker: Panasonic

Model: LT4H-L

Type Ralay output type Transistor output type
Item AC type AC/DC type DC type AC type AC/DC type DC type
Rating Rated operating voltage 100 to 240 V AC, 24 V AC, 24 V AC/DC 12 to 24 V DC 100 to 240 V AC, 24 V AC, 24 V AC/DC 12 to 24 V DC
Rated frequency 50/60 Hz common 50/60 Hz common
Rated power consumption Max. 10 V A Max. 3 W Max. 10 V A Max. 3 W
Rated control capacity 5 A, 250 V AC (resistive load) 100 mA, 30 V DC
Time range 9.999 s, 99.99 s, 999.9 s, 9999 s, 99 min 59 s, 999.9 min, 99 h 59 min, 999.9 h (selected by DIP switch)
Time counting direction Addition (UP)/Subtraction (DOWN)
(2 directions selectable by DIP switch)
Operation mode A (Power ON delay 1), A2 (Power ON delay 2), B (Signal ON delay), C (Signal OFF delay), D (Pulse one-shot), E (Pulse ON delay), F (Signal Flicker), G (Totalizing ON delay) (selectable by DIP switch)
Start/Reset/Stop input Min. input signal width: 1 ms, 20 ms (2 directions by selected by DIP switch) (The 8-pin type does not have a stop input.)
Lock input Min. input signal width: 20 ms (The 8-pin type does not have a lock input.)
Input signal Open collector input Input impedance: Max. 1 kΩ; Residual voltage: Max. 2 V
Open impedance: 100kΩ or less, Max. energized voltage: 40V DC
Indication 7-segment LCD (LT4H, LT4H-L common), Elapsed value (backlight red LED), Setting value (backlight yellow LED)
Power failure memory method EEP-ROM (Min. 105 overwriting)
Time accuracy (max.) Operating time fluctuation ± (0.005 % + 50 ms) in case of power on start
± (0.005 % + 20 ms) in case of input signal start
[Operating voltage: 85 to 110% Temperature: -10 to +55°C/ +14 to +131°F Min. input signal width: 1ms]
Temperature error
Voltage error
Setting error
Contact Contact arrangement Timed-out 1 Form C Timed-out 1 Form A (Open collector)
Contact resistance (Initial value) 100 mohm (at 1 A 6 V DC)
Contact material Ag alloy/Au flash
Life Mechanical (contact) Min. 2 × 107 ope. (Except for switch operation parts)
Electrical (contact) 1.0 × 105 ope. (At rated control voltage) Min. 107 ope. (At rated control voltage)
Electrical Allowable operating voltage range 85 to 110 % of rated operating voltage
Breakdown voltage
(Initial value)
2,000 Vrms for 1 min: Between live and dead metal parts (11-pin)
2,000 Vrms for 1 min: Between input and output
1,000 Vrms for 1 min: Between contacts
2,000 Vrms for 1 min: Between live and dead metal parts (Pin type)
2,000 Vrms for 1 min: Between input and output
Insulation resistance
(Initial value)
Min. 100 Mohm:
Between live and dead metal parts
Between input and output
Between contacts
(At 500V DC)
Min. 100 Mohm:
Between live and dead metal parts Between input and output
(At 500V DC)
Operating voltage reset time Max. 0.5 s
Temperature rise Max. 65°C (under the flow of nominal operating current at nominal voltage)
Mechanical Vibration resistance Functional 10 to 55 Hz: 1 cycle/min single amplitude of 0.35 mm .014 inch (10 min on 3 axes)
Destructive 10 to 55 Hz: 1 cycle/min single amplitude of 0.75 mm .030 inch (1 h on 3 axes)
Shock resistance Functional Min. 98 m 321.522 ft./s2 (4 times on 3 axes)
Destructive Min. 294 m 964.567 ft./s2 (5 times on 3 axes)
Operating conditions Ambient temperature -10 to 55°C/ +14 to +131°F
Ambient humidity Max. 85 % RH (non-condensing)
Air pressure 860 to 1,060 h Pa
Ripple rate 20 % or less 20 % or less
Connection 8-pin
Protective construction IP66 (front panel with rubber gasket)
Category: