Panasonic Corporation Automation Controls Business Unit industrial.panasonic.com/ac/e/
EP (AEP)
ASCTB3E 201211-T
ORDERING INFORMATION
200A type has been added.
High Capacity of Max.
1,000 V DC Cut-off Possible
EP RELAYS (AEP)
(10A, 20A and 80A types)
10A PC board type 10A TM type
20A TM type 80A type
300A type200A type
New
RoHS compliant
FEATURES
1. High-voltage, high-current control
capable
400V DC high-voltage switching and
1,000V DC cut-off has been achieved
thanks to a sealed construction with
mixed hydrogen gas and the magnetic
arc motion through use of a permanent
magnet.
2. Compact & Low Operating Sound
By using a capsule contact mechanism
that is enclosed with hydrogen gas, high-
capacity cutoff is possible even with a tiny
contact gap. There is little operating
sound, which does not change even
when large currents are cut off.
3. Arc space unnecessary
The enclosure box can be made smaller
thanks to an arc-space-free construction
from which the arc will not get out.
4. Safety
Since the contacts are enclosed in a
sealed capsule structure, the arc will not
get out, which ensures safety.
5. High contact reliability
The contact part is hermetically sealed
with H2 mixed gas, hence the contact
resistance remains stable regardless of
the ambient conditions.
6. Mounting direction is not specified
The weight of the movable parts is light,
and also the restoring force is large,
hence the relay is relatively unaffected by
gravity.
7. Wide selection of models available.
Types include PC board type (10A),
TM type (10A and 20A), Lead wire type
(200A) and Connector type (80A and
300A).
8. Standard compliance
The 10A, 20A, 80A type is UL/C-UL
standard certified.
TYPICAL APPLICATIONS
1. Photovoltaic power generation
systems
2. Cogeneration systems
3. Construction machinery
4. Welding equipment
5. Battery charge and discharge
control
6. AGV (Automatic guided vehicle)
(Unmanned transport carts)
7. Inverter control
8. Elevator, etc.
EP Relay
Contact arrangement
1: 1 Form A
3: 1 Form A PC board type*1
5: 1 Form A TM type*2
AEP 0
Contact rating
1: 10A
2: 20A
7: 200A
8: 80A
9: 300A
Coil voltage
12:
24:
48:
X0:
12V DC
24V DC
48V DC*1
100V DC*1
Notes: *1. 10A type only
*2. 10A and 20A types only
10A, 20A and 80A types are UL/C-UL certified.
Panasonic Corporation Automation Controls Business Unit industrial.panasonic.com/ac/e/
EP (AEP)
ASCTB3E 201211-T
TYPES
Standard packing: 10A: Carton: 25 pcs.; Case: 100 pcs.
20A: Carton: 25 pcs.; Case: 50 pcs.
80A: Carton: 1 pc.; Case: 20 pcs.
200A: Carton: 1 pc.; Case: 10 pcs.
300A: Carton: 1 pc.; Case: 5 pcs.
Notes: *1. One female connector lead wire for connecting is packaged with the 80A and 300A connector types.
-Specifications: Housing: Yazaki 7283-1020 (light gray); Lead wire: 0.5 mm2 dia. and 300±10 mm 11.811±.394 inch length
Lead wire coating color: Pin No. 1: white; Pin No. 2: green
*2. Two dedicated M6 bolts is packaged with the 200A type.
RATING
1. Coil data
Notes: 1. When using a DC power supply, use one that provides a current capacity leeway of at least 150% of the nominal coil current.
2. The 300A type has a built-in coil current switching circuit. After the nominal coil voltage is applied, it automatically switches in approximately 0.1 seconds.
Type Nominal coil voltage Contact arrangement Part No.
10A PC board type
12V DC
1 Form A
AEP31012
10A TM type AEP51012
20A TM type AEP52012
80A Connector type*1AEP18012
200A Lead wire type*2AEP17012
300A Connector type*1AEP19012
10A PC board type
24V DC
AEP31024
10A TM type AEP51024
20A TM type AEP52024
80A Connector type*1AEP18024
200A Lead wire type*2AEP17024
300A Connector type*1AEP19024
10A PC board type 48V DC AEP31048
10A TM type AEP51048
10A PC board type 100V DC AEP310X0
10A TM type AEP510X0
Type Nominal coil voltage Pick-up voltage
(at 20°C 68°F)
Drop-out voltage
(at 20°C 68°F)
Nominal coil current
[±10%] (at 20°C 68°F)
Nominal operating power
(Nominal voltage applied to
the coil, at 20°C 68°F)
Max. applied voltage
10A
12V DC
75%V or less of
nominal voltage
(Initial)
8.3%V or more of
nominal voltage
(Initial)
0.103A 1.24W
133%V of
nominal voltage
20A
4.17%V or more of
nominal voltage
(Initial)
0.327A 3.9W
80A
8.3%V or more of
nominal voltage
(Initial)
0.353A 4.2W
200A
8.3%V or more of
nominal voltage
(Initial)
0.5A 6W
300A
16.7%V or more of
nominal voltage
(Initial)
3.3A
When input: 40 W max.
(0.1 sec. from time of input)
When retained: 4 W max.
10A
24V DC
8.3%V or more of
nominal voltage
(Initial)
0.052A 1.24W
20A
4.17%V or more of
nominal voltage
(Initial)
0.163A 3.9W
80A
8.3%V or more of
nominal voltage
(Initial)
0.176A 4.2W
200A
8.3%V or more of
nominal voltage
(Initial)
0.25A 6W
300A
16.7%V or more of
nominal voltage
(Initial)
1.85A
When input: 45 W max.
(0.1 sec. from time of input)
When retained: 4 W max.
10A 48V DC 8.3%V or more of
nominal voltage
(Initial)
0.026A
1.24W
10A 100V DC 0.012A
Panasonic Corporation Automation Controls Business Unit industrial.panasonic.com/ac/e/
EP (AEP)
ASCTB3E 201211-T
2. Specifications
Notes: *1. The upper limit of the ambient temperature is the maximum temperature that can satisfy the coil temperature rise value.
Refer to Usage, transport and storage conditions in NOTES.
*2. Conditions: Varistor used for coil surge absorption. Note: if a diode is used the life will be lower.
*3. Condition: Switches rated number of 10 cycles each time there is a 2,500A cut-off.
*4. Please refer to the reference data on the following page for switching and cut-off at 400 V DC and higher.
Characteristics Item Specifications
10A type 20A type 80A type 200A type 300A type
Rating
Contact arrangement 1 Form A
Nominal switching capacity
(Resistive load) 10A 400V DC 20A 400V DC 80A 400V DC 200A 400V DC 300A 400V DC
Max. contact allowance voltage 1,000V DC
Short term current
15A (3min)
(harness wire: 2mm2)
30A (30s)
(harness wire: 2mm2)
40A (10min)
(harness wire: 3mm2)
60A (1min)
(harness wire: 3mm2)
120A (15min)
(harness wire:
15mm2)
300A (15min)
(harness wire:
60mm2)
400A (10min)
(harness wire:
100mm2)
Max. cut-off current — — 800A 300V DC
(1 cycle)*2
2,000A 350V DC
(1 cycle)*2
2,500A 300V DC
(3 cycles)*3
Overload cut-off rating 30A 400V DC
(Min. 50 cycles)*2
60A 400V DC
(Min. 50 cycles)*2
120A 400V DC
(Min. 50 cycles)*2—600A 400V DC
(Min. 300 cycles)
Reverse cut-off rating –20A 200V DC
(Min. 10 cycles)*2
–20A 200V DC
(Min. 100 cycles)*2
–80A 200V DC
(Min. 1,000 cycles)*2
–200A 200V DC
(Min. 1,000 cycles)*2
–300A 200V DC
(Min. 100 cycles)
Min. switching capacity 1A 6V DC 1A 12V DC — 1A 12V DC 1A 24V DC
Contact voltage drop (Initial)
Max. 0.5V
(When carrying
current is 10A)
Max. 0.2V
(By voltage drop
6V DC 20A)
Max. 0.067V
(By voltage drop
6V DC 20A)
Max. 0.1V
(When carrying
current is 200A)
Max. 0.06V
(When carrying
current is 300A)
Electrical
characteristics
Insulation resistance (Initial) Min. 100MΩ (at 1,000V DC) Measurement at same location as “Breakdown voltage” section.
Breakdown
voltage
(Initial)
Between open
contacts 2,500 Vrms for 1min. (Detection current: 10mA)
Between contact
and coil 2,500 Vrms for 1min. (Detection current: 10mA)
Operate time (at 20°C 68°F)Max. 50ms
(Nominal voltage applied to the coil, excluding contact bounce time)
Max. 30ms
(Nominal voltage
applied to the coil,
excluding contact
bounce time)
Release time (at 20°C 68°F)Max. 30ms
(After the nominal operation voltage stops, without diode)
Max. 10ms
(After the nominal
operation voltage
stops)
Mechanical
characteristics
Shock
resistance
Functional
10A, 20A (ON), 80A (ON), 200A (ON) and 300A (ON) types:
Min. 196 m/s2 (Half-wave pulse of sine wave: 11 ms; detection time: 10µs)
20A (OFF), 80A (OFF), 200A (OFF) and 300A (OFF) types:
Min. 98 m/s2 (Half-wave pulse of sine wave: 11 ms; detection time: 10µs)
Destructive Min. 490 m/s2 (Half-wave pulse of sine wave: 6 ms)
Vibration
resistance
Functional 10 to 200Hz, acceleration 43m/s2 constant (Detection time: 10µs)
Destructive 10 to 200Hz, acceleration 43m/s2 constant (3 directions, each 4 hours)
Expected life
Mechanical Min. 105Min. 2×105
Electrical*4
(Resistive load)
10A 400V DC
Min. 7.5×104 *2
(Switching frequency:
20 times/min)
20A 400V DC
Min. 3×103 *2
10A 1,000V DC
Min. 103 *2
(Switching frequency:
6 times/min)
80A 400V DC
Min. 103 *2
(Switching frequency:
20 times/min)
200A 400V DC
Min. 3×103 *2
(Switching frequency:
20 times/min)
60A 1,000V DC
Min. 103 *2
(Switching frequency:
6 times/min)
300A 400V DC
Min. 103
(Switching frequency:
6 times/min)
Conditions Conditions for operation,
transport and storage*1
Ambient temperature: –40°C to +80°C –40°F to +176°F (Storage: Max. +85°C +185°F),
Humidity: 5 to 85% R.H. (Not freezing and condensing at low temperature)
Unit weight Approx. 80 g
2.820oz
Approx. 180 g
6.349oz
Approx. 400 g
14.11oz
Approx. 600 g
21.16oz
Approx. 750 g
26.46oz
Panasonic Corporation Automation Controls Business Unit industrial.panasonic.com/ac/e/
EP (AEP)
ASCTB3E 201211-T
REFERENCE DATA
Note: The switching life curves are rough guides for when using over the nominal values. Be sure to conduct tests with the actual
device to verify your specifications.
1.-(1) Ambient temperature characteristics
(10A type)
Tested sample: AEP31012, 3pcs
1.-(2) Ambient temperature characteristics
(20A type)
Tested sample: AEP52012, 3pcs
1.-(3) Ambient temperature characteristics
(80A type)
Tested sample: AEP18012, 3pcs
x
-40
-40
-30
-20
-10
40
30
20
10
0
-40
80
146
60
110
40
74
20
68
-20
Ambient
temperature, °C°F
Pick up
voltage
Drop out
voltage
Variation
ratio, %
-4 0
32
x
Drop out
voltage
-40
-40
-30
-20
-10
40
30
20
10
0
-40
80
146
60
110
40
74
20
68
-20
Ambient
temperature, °C°F
Pick up voltage
Variation
ratio, %
-4 0
32
Ambient
temperature,
°C °F
-40
-40
-30
-20
-10
40
30
20
10
-40
80
146
60
110
40
74
20
68
-20
Pick up
voltage
Drop out
voltage
Operate
time
Release
time
Variation
ratio, %
-4 0
32
1.-(4) Ambient temperature characteristics
(200A type)
Tested sample: AEP17012, 3pcs
1.-(5) Ambient temperature characteristics
(300A type)
Tested sample: AEP19012, 3pcs
2.-(1) Max. value for switching capacity
(10A and 20A types)
Ambient
temperature,
°C °F
-40
-50
-40
-30
-20
-10
10
20
30
40
50
-40
80
146
60
110
40
74
20
68
-20 Pick up voltage
Variation
ratio, %
-4 0
32
Drop out
voltage
Ambient
temperature,
°C °F
-40
-40
-30
-20
-10
40
30
20
10
-40
80
146
60
110
40
74
20
68
-20
Pick up
voltage
Drop out
voltage
Operate
time
Release
time
Variation
ratio, %
-4 0
32
10A type 400V DC,
resistive load
20A type 400V DC,
resistive load
101 100 1000
1000
100
10
1
Contact voltage, V
Contact current, A
2.-(2) Max. value for switching capacity
(80A, 200A and 300A types)
3.-(1) Switching life and cut-off curves
(10A type)
3.-(2) Switching life and cut-off curves
(20A type)
101 100 1000
1000
100
10
1
Contact current, A
Contact voltage, V
300A type 400V DC,
resistive load
80A type 400V DC,
resistive load
200A type 400V DC,
resistive load
10A
Switching and
cut-off possible
10A or less
Cut-off only
above 10A
Load: Resistive
400V DC
1,000V DC
600V DC
800V DC
1
10
100
1,000
10,000
110100 1,000
Contact current, A
Life (cycle)
20A
Switching and
cut-off possible
20A or less
Cut-off only
above 20A
Load: Resistive
400V DC
1,000V DC 600V DC
800V DC
1
10
100
1,000
10,000
110100 1,000
Contact current, A
Life (cycle)
Panasonic Corporation Automation Controls Business Unit industrial.panasonic.com/ac/e/
EP (AEP)
ASCTB3E 201211-T
DIMENSIONS (mm inch)
1. 10A PC board type
3.-(3) Switching life and cut-off curves
(80A type)
3.-(4) Switching life and cut-off curves
(300A type)
4.-(1) Carrying performance curve
(10A and 20A type)
Switching and
cut-off possible
80A or less
Cut-off only
above 80A
80A
Load: Resistive
600V DC
400V DC
1
10
100
1,000
10,000
110100 1,000
800V DC
1,000V DC
Contact current, A
Life (cycle)
Switching and
cut-off possible
300A or less
Cut-off only
above 300A
300A Load: Resistive
1,000V DC
1
10
100
1,000
10,000
1 100 1,000 10,000
600V DC
400V DC
800V DC
Contact current, A
Life (cycle)
10A type
(Electric cable
2 mm2)
110100 1000
105
104
10
100
1000
Carrying current, A
Time, sec
20A type
(Electric cable
3 mm2)
4.-(2) Carrying performance curve
(80A, 200A and 300A types)
110100 1000
105
104
10
100
1000
Carrying current, A
Time, sec
300A type
(Electric cable
100 mm2)
200A type
(Electric cable
60 mm2)
80A type
(Electric cable
15 mm2)
The CAD data of the products with a CAD Data mark can be downloaded from: http://industrial.panasonic.com/ac/e/
External dimensions
1
2
65
34.0
31.3
31.6
19.5
(1.0)
0.5
1.4
3.0
2 dia. 2 dia.
4.5 max.
62.4
55.9±0.3
16.5±0.3
9.5±0.3
11.0±0.3 8.6±0.3
45.0
4.5
R2.3 .091
37.9
Coil input terminal
1: Load input terminal (+)
1.339
1.232
1.244
.768
.020
.055
.118
.079 dia. .079 dia.
.177 max.
2.457
2.201±.012
.650±.012
.374±.012
.433±.012 .339±.012
1.772
.177
1.492
(.039)
Lead-free pre-solder
(Su-3.0Ag-0.5Cu)
2: Load input terminal (−)
Schematic (Bottom view)
PC board pattern (Bottom view)
Notes: 1. We recommend through hole plating with
land on both sides.
2. Be careful of the insulation distance
between land patterns with regards to the
circuit voltage you will use.
1
2
6:Coil
5:Coil
Load sides have polarities (+) and (–).
4-2.45 dia. 4-.096 dia.
After doing through hole plating
Mounting hole
2-4.2 dia.
9.5 16.5
55.9
8.6
19.6
+0.1
0 +.004
0
.374 .650
2.201
.339
.772
2-.165 dia.
CAD Data
Dimension:
Less than 10mm .394inch:
10 to 50mm .394 to 1.969inch:
Min. 50mm 1.969 inch:
General tolerance
±0.3 ±.012
±0.6 ±.024
±1.0 ±.039
Panasonic Corporation Automation Controls Business Unit industrial.panasonic.com/ac/e/
EP (AEP)
ASCTB3E 201211-T
2. 10A TM type
3. 20A TM type
External dimensions
65
1
2
66.8
19.6
19.5
45.0
8.6 Coil input terminal
#187 tab, 0.5t
Load input terminal (−)
#187 tab, 0.5t
Load input terminal (+)
#187 tab, 0.5t
2:
1:
55.9±0.3
14.1±0.3
4.5±0.2 dia.
11.3±0.3 37.9
31.7 5.7
0.4
45 max.
31.6
2.630
.772
.768
1.772
.339
2.201±.012
.555±.012
.000±.008 dia.
.445±.012 1.492
1.248 .224
.016
1.772 max.
1.244
Schematic (Top view)
Panel cut-off
1
2
5:Coil
Load sides have polarities (+) and (–).
6:Coil
Mounting hole
2-4.2±0.1 dia.
55.9±0.1
2.201±.004
2-.165±.004 dia.
CAD Data
Dimension:
Less than 10mm .394inch:
10 to 50mm .394 to 1.969inch:
Min. 50mm 1.969 inch:
General tolerance
±0.3 ±.012
±0.6 ±.024
±1.0 ±.039
External dimensions
78.0 Coil terminal (no polarity)
#250 tab, 0.8t
1-Load input terminal (+)
#250 tab, 0.8t
2-Load input terminal (–)
#250 tab, 0.8t
3.071
50.0
1.969
22.8
.898
19.0
.748 40.0
1.575
11.1
.437
37.0±1.0
1.457±.039
5.8
.228
2-6 dia.
2-.236 dia.
22.5
.886
9.2
.362
64.0
2.520
Schematic (Top view)
Panel cut-off
Coil
Load sides have polarities (+) and (–).
Coil
64.0±0.1
2.520±.004
Mounting hole
2-6.0±0.2 dia.
2-.236±.008 dia.
CAD Data
Dimension:
Less than 10mm .394inch:
10 to 50mm .394 to 1.969inch:
Min. 50mm 1.969 inch:
General tolerance
±0.3 ±.012
±0.6 ±.024
±1.0 ±.039
Panasonic Corporation Automation Controls Business Unit industrial.panasonic.com/ac/e/
EP (AEP)
ASCTB3E 201211-T
4. 80A Connector type
5. 200A Lead wire type
External dimensions
-+
12
.394
10.0
7.3
.287
3.110
79.0
75.5
2.972
2: Load input terminal (−)
1: Load input terminal (+)
.276
7
26.0±0.3
1.024±.012
7.3
.287
63.5±0.3
2.500±.012
(.705)
(17.9)
Color height 5.7
.224
2
.079
M5 bolt
.236 dia.
6 dia.
2.280
57.9
(ends of bus bar)
.626
15.9
(width of bus bar)
1.768
44.9
(M5 bolt pitch)
1.772
45
(connector
position)
8.0.315 dia. (flat washer)
69.0
2.717
75.0
2.953
40.0
1.575
(M4)
Connector
Part No.: 7282-1020 (Yazaki)*
.472
12
Schematic (Top view)
Panel cut-off
*Accessories (included)
Coil
Coil
1+
2−
Load sides have polarities (+) and (−).
2-.236±.004 dia.
2-6±0.1 dia.
63.5±0.1
2.500±.004
26±0.1
1.024±.004
(5)
(.197)
300±10
11.811±.394
0.5sq/Green
0.5sq/White
Female connector (non-waterproof type),
Yazaki 7283-1020
CAD Data
Dimension:
Less than 10mm .394inch:
10 to 50mm .394 to 1.969inch:
Min. 50mm 1.969 inch:
General tolerance
±0.3 ±.012
±0.6 ±.024
±1.0 ±.039
*
Load input terminal (+)
Load input terminal (−)
Coil connection lead wire (no polarity)
>PBT-GF30 FR(17)<
1.063
27.0
2-.236
2-6.0
2.126
54.0
(.083)
(2.1)
.224
5.7 (Color height)
M6 female screw
(.079)
(2.0)
2.638
67.0
3.228±.012
82.0±0.3
3.740
95.0
7.874±.787
200±20
1.110
28.2
1.772
45.0 1.220±.012
31.0±0.3
2.953
75.0
.020
0.5
3.402
86.4
Accessories
Two hexagonal bolts (M6 × 12 mm .472 inch)
with flat washers are included.
External dimensions Schematic (Top view)
Panel cut-off
Coil
Coil
+−
Load sides have polarities (+) and (−).
2-.236±.004 dia.
2-6±0.1 dia.
Mounting hole
3.228±.004
82±0.1
1.220±.004
31±0.1
CAD Data
Dimension:
Less than 10mm .394inch:
10 to 50mm .394 to 1.969inch:
Min. 50mm 1.969 inch:
General tolerance
±0.3 ±.012
±0.6 ±.024
±1.0 ±.039
Panasonic Corporation Automation Controls Business Unit industrial.panasonic.com/ac/e/
EP (AEP)
ASCTB3E 201211-T
6. 300A Connector type
SAFETY STANDARDS
NOTES
Product name UL/C-UL (Recognized)
File No. Contact rating
10A E43149 10A 400V DC, 10A 277V AC Resistive
20A E43149 20A 400V DC, 20A 277V AC Resistive
80A E43149 80A 400V DC, 80A 277V AC Resistive
External dimensions
6
2-
1+
5
(13)
(.512)
39.3
1.547
74.7
2.941
.224
5.7
48.7
1.917
27
24.5
.965
3
.118
5: Coil terminal (V+)
2.429
61.7
M8 Flange nut
6: Coil terminal (GND)
1: Load input terminal (+)
2: Load input terminal (−)
63
2.480
60
2.362
47±0.3
1.850±.012
27
1.063
111
92
86
79±0.3
44
1.063
4.370
3.622
3.386
3.110±.012
1.732
3-.236 dia.
3-6 dia.
73.4
2.890
M8 bolt
Connector
Part No.: 7282-1020 (Yazaki)*
Schematic (Top view)
Panel cut-off
*Accessories (included)
6: Coil (GND)
5: Coil (V+)
2−
1+
Input and load sides have polarities (+) and (−).
79±0.1
3.110±.004
47±0.1
1.850±.004
3-6±0.1 dia.
3-.236±.004 dia.
(5)
(.197)
300±10
11.811±.394
0.5sq/Green(GND)
0.5sq/White(V+)
Female connector (non-waterproof type),
Yazaki 7283-1020
CAD Data
Dimension:
Less than 10mm .394inch:
10 to 50mm .394 to 1.969inch:
50 to 100mm 1.969 to 3.937 inch:
Min. 100mm 3.937 inch:
General tolerance
±0.3 ±.012
±0.6 ±.024
±1.0 ±.039
±1.6 ±.063
1. Please read “GENERAL
APPLICATION GUIDELINES” for
regular cautionary items.
2. When installing the relay, always
use washers to prevent the screws
from loosening.
Tighten each screw within the rated
range given below. Exceeding the
maximum torque may result in breakage.
Mounting is possible in either direction.
• M5 screw (20A, 80A, 200A and 300A
main unit mounting section): 3 to 4N·m
•M4 screw (10A PC board type main unit
mounting section): 0.98 to 1.2N·m
(10A TM type main unit mounting
section): 1.8 to 2.7N·m
Recommended securing torque on load
side terminals
• 80A/M5 bolt: 3.5 to 6.5 N·m
• 200A/M6 bolt: 6 to 8 N·m
• 300A/M8 bolt: 10 to 12 N·m
3. The contacts of the relay are
polarized. Please follow instructions
in the connection schematic when
connecting the contacts.
We recommend installing a surge
protector varistor for the 10A, 20A, 80A
and 200A types. Please note that when
using a diode, the switching speed may
decrease and cause a reduction in cut-off
performance. For the 300A type,
separate surge countermeasures are not
required, because it contains a built-in
surge absorbing element.
<Recommend varistor>
Amount of proof energy: Min. 1 J
Varistor voltage: 1.5 to 3.0 times of
nominal voltage
4. Do not use a relay if it has been
dropped.
5. Avoid mounting the relay in strong
magnetic fields (near a transformer or
magnet) or close to an object that
radiates heat.
6. Electrical life
This relay is a DC high-voltage switch. In
its final breakdown mode, it may lose the
ability to provide the proper cut-off.
Therefore, do not exceed the indicated
switching capacity and life. (Please treat
the relay as a product with limited life and
replace it when necessary.)
In the event that the relay loses cut-off
ability, there is a possibility that burning
may spread to surrounding parts, so
configure the layout so that the power is
turned off within one second and from the
point of view of safety, consider installing
a failsafe circuit in the device.
Also, in order to avoid increased contact
resistance, do not operate when there is
no switching load.
Panasonic Corporation Automation Controls Business Unit industrial.panasonic.com/ac/e/
EP (AEP)
ASCTB3E 201211-T
7. Permeation life of internal gas
This relay uses a hermetically encased
contact (capsule contact) with gas inside.
The gas has a permeation life that is
affected by the temperature inside the
capsule contact (ambient temperature +
temperature rise due to flow of electrical
current). Therefore, please do not exceed
the operation ambient and storage
ambient temperatures given in the
specifications.
8. Do not disassemble the relay.
Please note that disassembling the
relay will invalidate the warranty.
9. If the power is turned off and then
immediately on after applying the
rated voltage (current) continuously to
the relay’s coil and contact, the
resistance of the coil will increase due
to a rise in the coil temperature. This
causes the pick-up voltage to rise, and
possibly exceed the rated pick-up
voltage. In these circumstances, take
measures such as reducing the load
current, limiting the duration of
current flow, and applying a coil
voltage higher than the rated
operating voltage.
10. Pure DC current should be applied
to the coil. If it includes ripple, the
ripple factor should be less than 5%.
However, check the actual circuit
since the characteristics may be
slightly different. The power supply
waveform supplied to the coil should
be rectangular. Also, the 300A type
has a built-in dedicated drive circuit. It
may not operate normally unless the
rise time is 10 ms or less.
11. Don’t exceed maximum coil
voltage. Exceeding maximum
allowable coil voltage on continuous
basis will damage the relay and could
case failure.
12. If you will be using with a load
voltage that exceeds 400 V DC, please
be sure to verify operation on the
actual device, referring to the
switching life curves (reference data).
You must absolutely avoid continual
use in which the load current exceeds
the rated value. This will cause
abnormal heating.
13. The rated control capacity and life
are given as general guides.
It is important to conduct sufficient tests
on the actual device, because contact
properties and working life will differ
considerably depending on the type of
load and conditions.
14. Main contact ratings in the ratings
apply to when there is a resistive load.
If you are using an inductive load (L
load) such that L/R > 1 ms, add surge
protection in parallel with the
inductive load. If this is not done, the
electrical life will decrease and cut-off
failure may occur.
In order to prevent contact welding
when using a capacitive load (C load)
such as a capacitor load, please make
the inrush current setting more than
two times that of the nominal current.
Please contact us for more
information.
15. Be careful that foreign matter and
oils and fats kind don’t stick to the
main terminal parts because it is likely
to cause terminal parts to give off
unusual heat. Also, please use the
following materials for connected
harnesses and bus bars.
10A TM type:
#187, 0.5 mm board thickness
20A TM type:
#250, 0.8 mm board thickness
tab terminal (JIS C289-1999 compliant,
flat type connection terminal)
Harness nominal cross-sectional area
Load input terminal side;
10A TM type: min. 2.0 mm2
20A TM type: min. 3.0 mm2
Coil input terminal side;
10A and 20A TM types: min. 0.3 mm2
80A type: min. 15 mm2
200A type: min. 60 mm2
300A type: min. 100 mm2
16. Use 40 to 70N or 50 to 80N of force
as a guide to fasten the terminal
connected to the 10A TM and 20A TM
types. Please use caution when
inserting or removing the terminal as
the relay tab terminal may cause
injuly. Also, unstable conductivity and
abnormal terminal heating may occur;
therefore, please check that there is
no deformation of or foreign objects
on the faston terminals (blade
receptacle) you will be connecting.
Use JIS C2809 (or IEC60760) certified
products.
17. Place the PC board mount type
(10A PC board type) securely by hand
soldering after attaching it using M4
screw. Don’t submerge assembled
board in cleaning solvent or water.
Also, be careful not let flux overflow
up from the PC board or adhere to the
base of the relay.
Recommended hand soldering
conditions
• Soldering iron: 30 to 60 W
• Tip temperature: 400°C 752°F
• Solder time: within approx. 5 seconds
18. Make sure the power is turned off
when wiring.
19. Incorrect wiring may cause
unexpected malfunction and failure.
20. Regarding AC cutoff, although
there is no contact polarity, generally
it is thought that the electrical life will
shorten due to cutoff in the reverse
direction, compared to DC cutoff.
Confirm electrical life using actual
load. In the case of DC cut-off, please
note the contact polarity.
21. Lead-free solder (tin, silver and
copper) is used as pre-solder for the
terminals of the PC board mount type
(10A PC board type).
22. The warranted tensile strength of
the female connector lead wire used
for connection that comes with the
80A and 300A connector type when
attaching it to the relay body is 98N.
Avoid excessive tension as this is a
cause of broken wires and damage.
Also, insert the female connector
deeply and make sure the connection
is secure.
23. Condensation will occur during
sudden temperature changes in hot
and humid environments. Caution is
required, because condensation will
cause a decrease in the insulation
resistance between the terminals.
