Panasonic LK-T Relays User Manual

LK-T

1

ds_61113_0004_en_lkt: 091008J

LK-T RELAYS

1. High inrush current capability
1) Operating load capability: 
inrush 118 A, steady 8 A
2) UL/C-UL TV-8 approved
2. High insulation resistance
1) Creepage distance and clearances 
between contact and coil: Min. 6 mm 

.236 

inch

 (In compliance with IEC65)

2) Surge withstand voltage between 
contact and coil: 10,000 V or more

3. High noise immunity realized by the 
card separation structure between 
contact and coil
4. Conforms to the various safety 
standards
UL, C-UL, TÜV, and SEMKO approved

25.0

24.0

11.0

.984

.945

.433

#1 This value can change due to the switching frequency, environmental conditions, 

and desired reliability level, therefore it is recommended to check this with the 
actual load.

*

1

Measurement at same location as “Initial breakdown voltage” section.

*

2

Detection current: 10mA

*

3

Wave is standard shock voltage of 

±1.2 × 50μs according to JEC-212-1981

*

4

Excluding contact bounce time.

*

5

Half-wave pulse of sine wave: 11 ms; detection time: 10 

μs

*

6

Half-wave pulse of sine wave: 6 ms

*

7

Detection time: 10 

μs

*

8

The upper operation ambient temperature limit is the maximum temperature that 
can satisfy the coil temperature rise value. Refer to 1. Usage, transport and 
storage conditions in NOTES on page 3.

Arrangement

1 Form A

Initial contact resistance
(By voltage drop 6 V DC 1 A)

Max. 100 m

Ω

Contact material

AgSnO

2

 type

Rating
(resistive load)

Nominal switching 
capacity

5 A 277 V AC

Max. switching power

1,385 V A

Max. switching voltage

277 V AC

Max. switching current

8 A (120V AC)

Min. switching capacity

#1

(Reference value)

100 mA, 5 V DC

Expected life
(min. operations)

Mechanical (at 180 cpm)

10

6

Electrical (at 20 cpm) 
(at rated load)

10

5

Nominal operating power

250 mW

Max. operating speed

20 cpm (at rated load)

Initial insulation resistance*

1

Min. 1,000 M

Ω (at 500 V DC)

Initial *

2

 

breakdown 
voltage

Between open 
contacts

1,000 Vrms for 1 min.

Between contact 
and coil

4,000 Vrms for 1 min.

Initial surge voltage between contact 
and coil*

3

10,000 V

Operate time*

4

(at nominal voltage)

Max. 15ms (at 20

°C 

68

°F

)

Release time (without diode)*

4

(at nominal voltage)

Max. 5ms (at 20

°C 

68

°F

)

Temperature rise (at 70

°C)

Max. 35

°C with nominal coil 

voltage and at 5 A contact 

carrying current

(resistance method)

Shock 
resistance

Functional*

5

200 m/s

2

{approx. 20 G}

Destructive*

6

1,000 m/s

2

{approx. 100 G}

Vibration 
resistance

Functional*

7

10 to 55Hz

at double amplitude of 1.5mm

Destructive

10 to 55Hz

at double amplitude of 1.5mm

Conditions for operation, 
transport and storage*

8

(Not freezing and 
condensing at low 
temperature)

Ambient 
temp.

–40

°C to +70°C

–40

°F to +158°F

Humidity

5 to 85% R.H.

Air 
pressure

86 to 106 kPa

Unit weight

Approx. 12 g 

.42 oz

• Audio visual equipment
• Flat TVs and audio equipment, etc.
• Office equipment
• Home appliances

Contact arrangement

Protective construction

Coil voltage(DC)

1a: 1 Form A

F: Flux-resistant type

5, 9, 12, 24V

Ex. LKT

1a

F

12V

UL/C-UL, TÜV, SEMKO, TV-8 approved type is standard.
Notes: 1. Standard packing Carton: 100 pcs. Case: 500 pcs.
 

2. 3 V, 6 V, and 18 V DC types are also available. Please consult us for details.