LF
40
TMP type
PCB type
mm
inch
30.1
1.185
23.3
.917
15.7
.618
23.3
.917
30.1
1.185
15.7
.618
FEATURES
1. Ideal for compressor and inverter
loads
1) Compressor load: 20A 250V AC
2)
Inverter load: 20A 100V AC, 10A 200V AC
2. High insulation resistance
Creepage distance and clearances
between contact and coil;
Creepage Min. 9.5mm
.374inch
/Clear-
ance Min. 8mm
.315inch
Surge withstand voltage: Min. 10,000V
3. "PCB" and "TMP" types available
4. Conforms to the various safety
standards:
UL/CSA, TV, VDE approved
SPECIFICATIONS
Contact
Coil
Characteristics
Arrangement
1 Form A
Initial contact resistance, max.
(By voltage drop 6 V DC 1 A)
100 m
Contact material
Silver alloy
Rating
(resistive load)
Nominal switching
capacity
20 A 250V AC
Max. switching
power
6,250 V A
Max. switching
voltage
250V AC
Max. switching
current
25 A
Expected life
(min. operations)
Mechanical
(at 180 cpm)
2
10
6
Electrical
(at 20 cpm)
(Resistive load)
10
5
Nominal operating power
900 mW
Max. operating speed
(at rated load)
20 cpm
Initial insulation resistance*
1
Min. 1,000 M
(at 500 V DC)
Initial breakdown
voltage*
2
Between open
contacts
1,000 Vrms for 1 min.
Between contacts
and coil
5,000 Vrms for 1 min.
Surge voltage between contact and
coil*
3
Min. 10,000 V
Operate time*
4
(at nominal voltage)
Approx. 15ms
Release time (without diode)*
4
(at nominal voltage)
Approx. 15ms
Temperature rise
(at nominal voltage)
Max. 45
C
(resistance method, contact
current 20 A, rated coil
voltage, 60
C
140
F
)
Shock
resistance
Functional*
5
Min. 100 m/s
2
{10 G}
Destructive*
6
Min. 1,000 m/s
2
{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, trans-
port and storage*
8
(Not freezing and
condensing at low
temperature)
Ambient temp.
40
C to +60
C
40
F to +140
F
Humidity
5 to 85% R.H.
Unit weight
Approx. 23 g
.81 oz
Remarks
* Specifications will vary with foreign standards certification ratings.
*
1
Measurement at same location as "Initial breakdown voltage" section.
*
2
Detection current: 10mA
*
3
Wave is standard shock voltage of
1.2
50
s according to JEC-212-1981
*
4
Excluding contact bounce time.
*
5
Half-wave pulse of sine wave: 11 ms; detection time: 10
s
*
6
Half-wave pulse of sine wave: 6 ms
*
7
Detection time: 10
s
*
8
Refer to 5. Conditions for operation, transport and storage mentioned in
AMBIENT ENVIRONMENT (Page 24).
TYPICAL
APPLICATIONS
Air conditioner
Refrigerators
OA equipment
ORDERING INFORMATION
Product Name
LF
Contact arrangement
Terminal shape
Coil voltage, V DC
1: 1 Form A
Note: Standard packing; Carton: 50 pcs. Case 200 pcs.
UL/CSA,VDE, TV approved type is standard.
T: TMP type
P: PCB type
05: 5 12: 12
06: 6 18: 18
09: 9 24: 24
Ex.
A
LF
1
T
12
LF-RELAYS
20A Power Relay For
Home appliances
VDE
LF
42
REFERENCE DATA
1. Coil temperature rise
Sample: ALF1T12, 6 pcs.
Point measured: coil inside
Contact current: 20A
Ambient temperature: 25
C
77
F
, 60
C
140
F
2-(1). 200V AC electrical life test
(200V AC, inverter load)
Sample: ALF1T12, 6 pcs.
Load: Inrush 102A (wave peak value),
Steady 14.4A (wave peak value)
Inverter dummy 200V AC
Switching frequency: ON 1s, OFF 5s
Circuit:
Coil applied voltage, %V
80
100
120
70
158
60
140
50
122
40
104
30
86
20
68
10
50
0
32
60
C
140
F
25
C
77
F
Temperature rise,
C
F
1.9
LF relay contact
Switch
2,000
F
200V AC
0
6
3
0
2
4
6
8
10
12
Max.
Min.
x
Max.
Min.
x
Pick-up and drop-out voltage, V
No. of operations,
10
4
Contact welding: 0 times
Miscontact: 0 times
Drop-out voltage
Pick-up voltage
2-(2). 100V AC electrical life test
(100V AC, inverter load)
Sample: ALF1T12, 6 pcs.
Load: Inrush 224A (wave peak value),
Steady 30.5A (wave peak value)
Inverter dummy 100V AC
Switching frequency: ON 1s, OFF 5s
Circuit:
LF relay contact
2,000
F
470
F
470
F
100V AC
0
6
3
0
2
4
6
8
10
12
Max.
Min.
x
Max.
Min.
x
Pick-up and drop-out voltage, V
No. of operations,
10
4
Drop-out voltage
Pick-up voltage
Contact welding: 0 times
Miscontact: 0 times
2-(3). Inrush 70.7A, Steady 20A, 250V AC
electrical life test
(Compressor dummy load)
Sample: ALF1T12, 3 pcs.
Load: Inrush 70.7A, cos
= 0.7
Steady 20A, cos
0.9
250V AC compressor dummy
Switching frequency: ON 1.5s, OFF 1.5s
Circuit:
2-(4). Electrical life test
(20A 250V AC, resistive load)
Sample: ALF1T12, 6 pcs.
Switching frequency: ON 1.5s, OFF 1.5s
SW1
NO
Mg
Detection
Circuit
Contact Weld
Min. 0.5s
Miss Contact
after 0.2s
COM
250V AC
60Hz
G
12V DC
()
(+)
0
10
5
0
2
4
6
8
10
12
Max.
Min.
x
Max.
Min.
x
Pick-up and drop-out voltage, V
No. of operations,
10
4
Drop-out voltage
Pick-up voltage
Contact welding: 0 times
Miscontact: 0 times
0
20
10
0
2
4
6
8
10
Pick-up and drop-out voltage, V
No. of operations,
10
4
12
Drop-out voltage
Pick-up voltage
Max.
Min.
x
Max.
Min.
x
Contact welding: 0 times
Miscontact: 0 times
For Cautions for Use, see Relay Technical Information (Page 11 to 39).
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