AEV17024 - PANASONIC ELECTRIC WORKS

Panasonic Corporation Automation Controls Business Unit industrial.panasonic.com/ac/e/

EV (AEV)

ASCTB233E 201209-T

ORDERING INFORMATION

Capsule contact

Mechanism and

High-capacity Cut-off

Compact Relay

EV RELAYS (AEV)

10A

80A

300A200A

120A

20A

New

RoHS compliant

FEATURES

• Compact and lightweight

Charged with hydrogen gas for high arc

cooling capacity, short gap cutoff has

been achieved at high DC voltages.

• Safety

High safety achieved with construction

that prevents explosions by keeping the

arc from leaking.

• High contact reliability

Since the contact portion is sealed in

hydrogen gas, there is no contact

oxidation. It is also dustproof and

waterproof.

TYPICAL APPLICATIONS

High DC voltage applications such as

• Electric vehicle

• Hybrid vehicle

• Fuel-cell vehicle

• Battery charge and discharge

systems

• Construction equipment

Contact arrangement

1: 1 Form A (Screw terminal, 10A TM, with terminal protection cover)

5: 1 Form A (20A TM type)

AEV 0

Contact rating

1: 10 A

2: 20 A

8: 80 A

4: 120 A

7: 200 A

9: 300 A

Coil terminal structure

Nil:

Plug-in (Faston) (for 20 A type), Connector (for 80 A, 120 A and 300 A), Lead wire (for 200 A)

Plug-in (Faston) (for 10 A type with terminal protection cover)

Coil voltage

12: 12V DC

24: 24V DC

Panasonic Corporation Automation Controls Business Unit industrial.panasonic.com/ac/e/

EV (AEV)

ASCTB233E 201209-T

TYPES

Standard packing; Carton: 25pcs. Case: 100pcs (for 10 A type)

Carton: 25pcs. Case: 50pcs (for 20 A type)

Carton: 1pc. Case: 20pcs (for 80 A type)

Carton: 1pc. Case: 20pcs (for 120 A type)

Carton: 1pc. Case: 10pcs (for 200 A type)

Carton: 1pc. Case: 5pcs (for 300 A type)

RATING

1. Coil data

Type Nominal coil voltage Contact arrangement Part number

10 A

12 V DC 1 Form A

AEV110122

20 A AEV52012

80 A AEV18012

120 A AEV14012

200 A AEV17012

300 A AEV19012

10 A

24 V DC 1 Form A

AEV110242

80 A AEV18024

120 A AEV14024

200 A AEV17024

300 A AEV19024

Type Nominal coil

voltage

Pick-up voltage

(at 20°C 68°F)

Drop-out voltage

(at 20°C 68°F)

Nominal operating current

[±10%] (at 20°C 68°F)

Nominal operating power

(at 20°C 68°F)

Max. applied

voltage

10 A

12 V DC

Max. 9 V DC Min. 1 V DC 0.103 A 1.24 W

16 V DC

20 A Max. 9 V DC Min. 0.5 V DC 0.327 A 3.9 W

80 A Max. 9 V DC Min. 1 V DC 0.353 A 4.2 W

120 A Max. 9 V DC Min. 1 V DC 0.353 A 4.2 W

200 A Max. 9 V DC Min. 1 V DC 0.500 A 6.0 W

300 A Max. 9 V DC Min. 2 V DC 3.2 A (Inrush) 37.9 W (Inrush, approx. 0.1 sec.)

3.6 W (Stable)

10 A

24 V DC

Max. 18 V DC Min. 2 V DC 0.052 A 1.24 W

32 V DC

80 A Max. 18 V DC Min. 2 V DC 0.176 A 4.2 W

120 A Max. 18 V DC Min. 2 V DC 0.176 A 4.2 W

200 A Max. 18 V DC Min. 2 V DC 0.250 A 6.0 W

300 A Max. 18 V DC Min. 4 V DC 1.85 A (Inrush) 44.4 W (Inrush, approx. 0.1 sec.)

3.8 W (Stable)

New

Panasonic Corporation Automation Controls Business Unit industrial.panasonic.com/ac/e/

EV (AEV)

ASCTB233E 201209-T

2. Speciﬁcations

Notes: *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.

*2. The electrical load performance value for the 10A, 20A, 80A, 120A and 200A types applies when a varistor is connected in parallel to the coil. Please be warned

that working life will be reduced when a diode is used.

*3. Condition: Nominal switching 10 cycles, each cut-off 2,500 A

*4. The coil voltage 12 V DC type and 24 V DC type have the same speciﬁcations.

*5. at L/R 1ms

Characteristics Item Speciﬁcations

10A type 20A type 80A type 120 A type 200 A type 300 A type

Contact rating

Contact arrangement 1 Form A

Nominal switching capacity

(resistive load) 10A 400V DC 20A 400V DC 80A 400V DC 120A 400V DC

(Carry current) 200A 400V DC 300A 400V DC

Short term current

15A 2min,

30A 30sec

(2mm2)

40A 10min,

60A 1min (3mm2)

120A 15min,

180A 2min

(15mm2)

225A 3min,

400A 30sec.

(38mm2)

300A 15min,

(60mm2)

400A 10min,

600A 1min.

(100mm2)

Min. switching capacity

(resistive load)*11A 12V DC*11A 12V DC*11A 12V DC*11A 12V DC*11A 12V DC*11A 24V DC*1

Max. cut-off current*5——

800A 300V DC

(Min. 1 cycle)*2, 5

1,200A 300V DC

(Min. 1 cycle)*2, 5

2,000A 350V DC

(Min. 1 cycle)*2, 5

2,500A 300V DC

(Min. 3 cycles)*3, 5

Overload opening/closing

rating*5

30A 400V DC

(Min. 50

cycles)*2, 5

60A 400V DC

(Min. 50

cycles)*2, 5

120A 400V DC

(Min. 50

cycles)*2, 5

800A 300V DC

(Min. 5 cycles)*2, 5

120A 400V DC

(Min. 50

cycles)*2, 5

—600A 400V DC

(Min. 300 cycles)

Reverse direction cut-off*5——

–120A 200V DC

(Min. 50

cycles)*2, 5

–120A 200V DC

(Min. 50

cycles)*2, 5

–200A 200V DC

(Min. 1,000

cycles)*2, 5

–300A 200V DC

(Min. 100 cycles)

Contact voltage drop (Initial)

Max. 0.5V

(By voltage drop

6 V DC 10A)

Max. 0.2V

(By voltage drop

6 V DC 20A)

Max. 0.067V

(By voltage drop

6 V DC 20A)

Max. 0.03V

(By voltage drop

6 V DC 20A)

Max. 0.1V

(200 A Carry

current)

Max. 0.06V

(300 A Carry

current)

Electrical

characteristics

Insulation resistance (Initial) Min. 100MΩ (at 500 V DC, Measurement at same location as “Initial breakdown voltage” section.)

Breakdown

voltage

(Initial)

Between open

contacts 2,500Vrms/min. (Detection current: 10mA)

Between

contact and coil 2,500Vrms/min. (Detection current: 10mA)

Operate time (at 20°C 68°F)Max. 50ms

(Nominal coil voltage applied to the coil, excluding contact bounce time.)

Max. 30ms

(Nominal coil

voltage applied to

the coil, excluding

contact bounce

time.)

Release time (at 20°C 68°F)Max. 30ms

(Nominal coil voltage applied to the coil, without diode.)

Max. 10ms

(Nominal coil

voltage applied to

the coil, without

diode.)

Mechanical

characteristics

Shock

resistance

Functional

Min. 196m/s2 {20

G} (Half-wave

pulse of sine

wave: 11ms;

detection time:

10µs)

For ON: Min. 196m/s2 {20 G} (Half-wave pulse of sine wave: 11ms; detection time: 10µs)

For OFF: Min. 98m/s2 {10 G} (Half-wave pulse of sine wave: 11ms; detection time: 10µs)

Destructive Min. 490 m/s2 {50 G} (Half-wave pulse of sine wave: 6ms)

Vibration

resistance

Functional 10 to 200 Hz, Min.43 m/s2 {4.4 G} (Detection time: 10µs)

10 to 200 Hz,

Min. 44 m/s2

{4.5 G} (Detection

time: 10µs)

Destructive 10 to 200 Hz, Min.43 m/s2 {4.4 G}

(Time of vibration for each direction; X, Y, Z direction: 4 hours)

10 to 200 Hz,

Min. 44 m/s2

{4.5 G} (Time of

vibration for each

direction; X, Y, Z

direction: 4 hours)

Expected life

Mechanical Min. 105Min. 2×105

Electrical (resistive load) 10A 400V DC

Min. 75,000*2

20A 400V DC

Min. 3,000*2

80A 400V DC

Min. 1,000*2

30A 400V DC

Min. 3,000*2

200A 400V DC

Min. 3,000*2

300A 400V DC

Min. 1,000

Conditions Conditions for operation,

transport and storage

Ambient temperature:

–40 to +80°C –40 to +176°F (Storage: Max. 85°C 185°F),

Humidity: 5 to 85% R.H. (Not freezing and condensing at low temperature)

Ambient temperature:

–40 to +85°C –40 to +185°F

(Storage: Max.85°C 185°F),

Humidity: 5 to 85% R.H. (Not freezing

and condensing at low temperature)

Mass (Approx.) 90 g 3.17 oz 180 g 6.35 oz 400 g 14.11 oz 400 g 14.11 oz 600 g 21.16 oz 750 g 26.46 oz

Panasonic Corporation Automation Controls Business Unit industrial.panasonic.com/ac/e/

EV (AEV)

ASCTB233E 201209-T

REFERENCE DATA

1.-(1) Ambient temperature characteristics

(10 A type)

Sample: EV relay 10 A, 3 pcs.

1.-(2) Ambient temperature characteristics

(20 A type)

Sample: EV relay 20 A, 3 pcs.

1.-(3) Ambient temperature characteristics

(80 A type)

Sample: EV relay 80 A, 3 pcs.

Pick-Up

voltage

Drop-out

voltage

Variation

ratio, %

-40 -20

-30

-10

-20

-40

40 60 80

Ambient

temperature, °C

Variation

ratio, %

-40 -20

-30

-10

-20

-40

40 60 80

Ambient

temperature, °C

Drop-out

voltage

Pick-Up

voltage

Variation

ratio, %

-40 -20

-30

-10

-20

-40

40 60 80

Ambient

temperature, °C

Pick-Up

voltage

Drop-out

voltage

1.-(4) Ambient temperature characteristics

(120 A type)

Sample: EV relay 120 A, 3 pcs.

1.-(5) Ambient temperature characteristics

(200 A type)

Sample: EV relay 200 A, 3 pcs.

1.-(6) Ambient temperature characteristics

(300 A type)

Sample: EV relay 300 A, 3 pcs.

Variation

ratio, %

-40 -20

-30

-10

-20

-40

20 60 80

Ambient

temperature, °C

Drop-out

voltage

Pick-Up

voltage

Variation

ratio, %

-40 -20

-30

-10

-20

-40

-50

20 60 80

Ambient

temperature, °C

Drop-out voltage

Pick-Up voltage

Variation

ratio, %

-40 -20

-30

-10

-20

-40

04020 60 80

Ambient

temperature, °C

Pick-Up

voltage

Drop-out

voltage

2. Max. value for switching capacity

When 400 V DC resistive load

3. Switching life curve (Forward direction)

When 400 V DC resistive load

4. Cut-off life curve (Forward direction)

Contact voltage, V

Contact current, A

110100 1000

1000

100

300 A type

120 A type

80 A type

10 A type

20 A type

200 A type

Contact current, A

Life, cycle

100

1000

10000

100000

10 100 1000

10 A type

80 A type

120 A type

300 A type

200 A type

20 A type

Life, cycle

Cut-off current, A

100 1000 10000

120 A type,

400 V DC

resistive load

(for Min. 600 A,

300 V DC)

200 A type,

400 V DC resistive load

(for Min. 900 A, 350 V DC)

300 A type,

400 V DC resistive load

(for Min. 900 A,

300 V DC)

80 A type,

400 V DC resistive load

(for Min. 600 A,

300 V DC)

1000

100

5. Carrying performance curve (80°C 176°F)

*For 200 A and 300 A, at 85°C 185°F

Time, sec

Carrying current, A

105

104

1000

100

110100 1000

120 A type

300 A type

200 A type

20 A type

10 A type

80 A type

Panasonic Corporation Automation Controls Business Unit industrial.panasonic.com/ac/e/

EV (AEV)

ASCTB233E 201209-T

DIMENSIONS (mm inch)

The CAD data of the products with a CAD Data mark can be downloaded from: http://industrial.panasonic.com/ac/e/

555

49.7

1.957

45.5

1.791

Max. 45

1.772

5.7

.224

0.4

.016

31.6

1.244

19.5

.768

37.9

1.492

31.7

1.248

1-Load input terminal (+)

#187 tab, 0.5t

2-Load input terminal (–)

#187 tab, 0.5t

5-Coil terminal (No polarity)

#187 tab, 0.5t

6-Coil terminal (No polarity)

#187 tab, 0.5t

14.1±0.3

.555±.012

11.3±0.3

.445±.012

8.6

.339

2×4.5±0.2 dia.

2×.177±.008 dia.

55.9±0.3 2.201±.012

19.6 .772

66.8 2.630

45.0 1.772

Schematic (TOP VIEW)External dimensions

Mounting dimensions

Load side has polarities (+) and (−)

6:Coil

5:Coil

2 (−)

1 (+)

55.9±0.1

2.201±.004

Mounting hole:

2×4.2±0.1 dia.

2×.165±.004 dia.

1. 10 A type

CAD Data

General tolerance;

less than 10 .394:±0.3 ±.012

10 to 50 .394 to 1.969:±0.6 ±.024

more than 50 1.969:±1.0 ±.039

2 (−)

Coil

1 (+)

Schematic (TOP VIEW)External dimensions

Mounting dimensions

1-Load input terminal (+)

#250 tab, 0.8t

Coil terminal (No polarity)

#250 tab, 0.8t

64.0±0.1

2.520±.004

2-Load input terminal (–)

#250 tab, 0.8t

Load side has polarities (+) and (−)

Mounting hole:

2×6.0±0.2 dia.

2×.236±.008 dia.

78.0

3.071

64.0

22.5

.886 40.0

1.575

2-6 dia.

2-.236 dia.

11.1

.437

9.2

.362

5.8

.228

37.0±1.0

1.457±.039

19.0

.748

2.520

22.8

.898

50.0

1.969

2. 20 A type

CAD Data

General tolerance;

less than 10 .394:±0.3 ±.012

10 to 50 .394 to 1.969:±0.6 ±.024

more than 50 1.969:±1.0 ±.039

Panasonic Corporation Automation Controls Business Unit industrial.panasonic.com/ac/e/

EV (AEV)

ASCTB233E 201209-T

*Note: Separate connection of the terminal and lead wire is required.

Coil

2 (−)1 (+)

Schematic (TOP VIEW)External dimensions

Mounting dimensions

Mounting hole:

2×6.0±0.2 dia.

2×.236±.008 dia.

63.5±0.2

2.500±.008

26.0±0.2

1.024±.008

69.0

2.717

40.0

1.575

Connector part number: 7282-1020 (Yazaki)

(Supplement) Harness side female

connector part number: 7283-1020 (*Note)

79.0

3.110

75.0

M5 bolt

(M4)

2.953

45 1.772

(Connector position)

75.5

2.972

.472

Collar height: 5.7

.224

.945

.394

7.3

.287

15.9

.626

(Bus bar width)

44.9 1.768

(M5 bolt pitch)

57.9 2.280

(Both ends of bus bar)

7.3

.287

.079

.276

26.0

1.024

63.5

1-Load input bus bar (+)

2-Load input bus bar (−)

2.500

(17.9)

(.705)

2×6.0 dia.

2×.236 dia.

8.0 dia.

.315 dia.

(Flat washer)

Load side has polarities (+) and (−)

3. 80 A type

CAD Data

General tolerance;

less than 10 .394:±0.3 ±.012

10 to 50 .394 to 1.969:±0.6 ±.024

more than 50 1.969:±1.0 ±.039

2 (−)

Coil

1 (+)

Coil

Schematic (TOP VIEW)External dimensions

Mounting dimensions

Load side has polarities (+) and (−)

63.5±0.2

26.0±0.2

1.024±.008

70.0

2.756

80.0

3.150

10.0±0.6

.394±.024

75.0

M6 bolt

(M4)

2.953

7.3

.287

7.3

.287

.079

.276

.63016.0

(Bus bar width)

26.0

1.024

2.500±.008

40.0

1.575

75.5

2.972

63.5

2.500

(17.9)

(.705)

61.9 2.437

44.9 1.768

(Both ends of bus bar)

(M6 bolt pitch)

Mounting hole:

2×6.0±0.2 dia.

2×.236±.008 dia.

Connector part number:

7282-1020 (Yazaki)

(Supplement)

Harness side female connector

part number: 7283-1020 (*Note)

1-Load input bus bar (+)

2-Load input bus bar (−)

2×6.0 dia.

2×.236 dia.

1.772

.945

.472

Collar height:

5.7

.224 (Connector position)

8.0 dia. (Flat washer)

.315 dia.

4. 120 A type

CAD Data

General tolerance;

less than 10 .394:±0.3 ±.012

10 to 50 .394 to 1.969:±0.6 ±.024

more than 50 1.969:±1.0 ±.039

Panasonic Corporation Automation Controls Business Unit industrial.panasonic.com/ac/e/

EV (AEV)

ASCTB233E 201209-T

*Note: Separate connection of the terminal and lead wire is required.

>PBT-GF30 FR(17)<

Coil connection lead wire

(No polarity)

1-Load input terminal (+)2-Load input terminal (−)

(Threaded portion: Min. 8 .315)

27.0 1.063

54.0 2.126

67.0 2.638

82.0 3.228

95.0 3.740

(2.1)

(.083)

(2.0)

(.079)

5.7

(Collar height)

.224

0.5

.020

75.0

2.953

86.4

3.402 200±20

7.874±.787

2×6.0 dia.

2×.236 dia.

45.0

1.772 31.0

1.220 28.2

1.110

Coil

1 (+)

Coil

2 (−)

Load side has polarities (+) and (−)

Schematic (TOP VIEW)External dimensions

Mounting dimensions

Mounting hole:

2×6.0±0.2 dia.

2×.236±.008 dia.

82.0±0.2

3.228±.008

31.0±0.2

1.220±.008

5. 200 A type

CAD Data

General tolerance;

less than 10 .394:±0.3 ±.012

10 to 50 .394 to 1.969:±0.6 ±.024

more than 50 1.969:±1.0 ±.039

Load side has polarities (+) and (−)

Schematic (TOP VIEW)External dimensions

Mounting dimensions

2 (−)

6:Coil (GND)

5:Coil (V+)

1 (+)

79.0±0.2

3.110±.008

47.0±0.2

1.850±.008

Mounting hole:

3×6.0±0.2 dia.

3×.236±.008 dia.

39.3

1.547

48.7

1.917

(13)

(.512)

1.063

2.362

2.480 47±0.3

1.850±.012

M8 bolt

M8 Flange nut

.118

5.7

.224

74.7

2.941

73.4

2.890

61.7

2.429

24.5

.965

Connector part number: 7282-1020 (Yazaki)

(Supplement) Harness side female

connector part number: 7283-1020 (*Note)

3×6±0.3 dia.

6-Coil terminal (GND)

5 - Coil terminal (V+)

1-Load input bus bar (+)2-Load input bus bar (−)

3×.236±.012 dia.

79±0.3 3.110±.012

44 1.732

27 1.063

86 3.386

92 3.622

111 4.370

6. 300 A type

CAD Data

General tolerance;

less than 10 .394:±0.3 ±.012

10 to 50 .394 to 1.969:±0.6 ±.024

more than 50 1.969:±1.0 ±.039

more than 100 3.937:±1.6 ±.063

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EV (AEV)

ASCTB233E 201209-T

NOTES

1. Usage, transport and storage conditions

1) Temperature: –40 to +80°C –40 to +176°F

2) Humidity: 5 to 85% RH (Avoid freezing and condensation.)

The humidity range varies with the temperature. Use within the

range indicated in the graph below.

3) Atmospheric pressure: 86 to 106 kPa

Temperature and humidity range for usage, transport, and

storage

4) Condensation

Condensation forms when there is a sudden change in

temperature under high temperature and high humidity

conditions. Condensation will cause deterioration of the relay

insulation.

5) Low temperature, low humidity environments

The plastic becomes brittle if the relay is exposed to a low

temperature, low humidity environment for long periods of time.

2. When installing the relay, always use washers to prevent

the screws from loosening.

• Regarding the torque value for contact terminal, it is intended

that secure an electrical connection stability by getting enough

contact pressure (Axial force) of ﬁxing part.

Therefore, please do not use the screw (a bolt and a nut)

preventing looseness needing running torque (Prevailing torque

type and Self lock type) because enough tightening force in axial

direction may not be secured.

In addition, there is high possibility that a case of a relay may be

broken if users use the nut for EV80A and EV120A.

Because excessive torque is applied to a case of a relay before

generation of contact pressure. (Axial force).

• Regarding the torque value for the main body of a relay, please

use suitable screw on own veriﬁcation.

3. Condition of tightening screw

Tighten each screw within the rated range given below.

Exceeding the maximum torque may result in breakage.

Mounting is possible in either direction.

• M4 screw (for 10A type): 1.8 to 2.7 N·m

• M5 screw (for 20A, 80A, 120A, 200A and 300A types): 3 to 4

N·m

• M5 (for 80A type): 3 to 4 N·m

• M6 (for 120A and 200A types): 6 to 8 N·m

• M8 (for 300A type): 10 to 12 N·m

4. Electrical life

This relay is a high-voltage direct-current 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.

5. 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).

For this reason, make sure the ambient operating temperature is

between –40 and 80°C –40 and +176°F (200A and 300A types:

Max. 85°C 185°F), and the ambient storage temperature is

between –40 and 85°C –40 and +185°F.

6. The coils (300 A type) and contacts (all type) of the relay

are polarized, so follow the connection schematic when

connecting the coils and contacts.

Type 300 A contains a reverse surge voltage absorption circuit;

therefore a surge protector is not needed.

7. For the 300 A type, drive the coil with a quick startup.

(Built-in one-shot pulse generator circuit)

8. After the ON signal enters the 300A type, automatic coil

current switching occurs after approximately 0.1 seconds.

Do not repeatedly turn it OFF within that 0.1 seconds

interval, as doing so may damage the relay.

9. 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 type: Min. 2 mm2 nominal cross-sectional area

20A type: Min. 3 mm2 nominal cross-sectional area

80A type: Min. 15 mm2 nominal cross-sectional area

120A type: Min. 38 mm2 nominal cross-sectional area

200A type: Min. 60 mm2 nominal cross-sectional area

300A type: Min. 100 mm2 nominal cross-sectional area

10. As a guide, the insertion strength of the plug-in terminal

into the relay tab terminal should be 40 to 70N (10A type), 40

to 80N (20A type). Please select a plug-in terminal (ﬂat

connection terminal) which comply with JIS C2809-1999.

10A type: for plate thickness 0.5mm and #187 tab terminal

20A type: for plate thickness 0.8mm and #250 tab terminal

11. Avoid excessive load applied to the terminal in case of

installing such as a bus bar etc., Because it might adversely

affect the opening and closing performance.

12. Use the speciﬁed connector for the connector terminal

connection (80A, 120A and 300A)

Yazaki Corporation 7283 – 1020 or equivalent

Humidity, %RH

Tolerance range

(Avoid

condensation

when used at

temperatures

higher than

0°C32°F)

(Avoid freezing

when used at

temperatures

lower than

0°C32°F)

800–40 +176+32–40

Temperature, °C°F

Panasonic Corporation Automation Controls Business Unit industrial.panasonic.com/ac/e/

EV (AEV)

ASCTB233E 201209-T

For general cautions for use, please refer to the “CAUTIONS FOR USE OF AUTOMOTIVE RELAYS”

http://industrial.panasonic.com/ac/e/

13. Cautions for use

1) Regarding cautions for use and explanation of technical

terms, please refer to our “Automotive Relays Automation

Controls Group Catalog”.

2) Additionally the ambient temperature and condition for your

application should be considered because pick-up and drop-out

voltage will be changed.

3) If it includes ripple, the ripple factor should be less than 5%.

For coil surge absorption, please use a zener diode or varistor,

etc., so that the clamp voltage reaches 1.5 times or more (at

least 18 V for rated 12 V type) the rated operation voltage.

If only a diode is connected in parallel with the relay coil, the

contact opening velocity will become slow and sufﬁcient cutoff

performance cannot be guaranteed. Please avoid such usage.

Ex. 1: When using a varistor

Recommended Varistor; Maximum Energy: more than 1J

(However, please make settings using values that take into

consideration the worst case scenario.)

Varistor voltage: For 12 V DC input, Min. 18 V

Ex. 2: When using a zener diode (circuit)

4) Lifetime is speciﬁed under the standard test conditions in JIS

C 5442. (temperature 15 to 35°C 59 to 95°F, humidity 25%RH to

85%RH)

Lifetime is dependent on the coil driving circuit, load type,

operation frequency and ambient conditions. Check lifetime

under the actual condition.

Especially, Contact terminals have polarity. So if the contact

terminals were connected with opposite pole, the electric life

would be shorter.

5) When applying current which includes precipitous changes or

ripple, the relay may generate buzzing sound. Therefore, please

conﬁrm with the actual load.

6) If the relay is used while exceeding the coil rating, contact

rating or cycle lifetime, this may result in the risk of overheating.

7) As a general rule, do not use a relay if it has been dropped.

8) Take care to avoid cross connections as they may cause

malfunctions or overheating.

9) When the screws for ﬁxing relay-body and for additional

terminal are tightened, it should be used within the range of

decided torque.

10) Avoid mounting the relay in strong magnetic ﬁelds (near a

transformer or magnet) or close to an object that radiates heat.

11) If the several relays are mounted closely or a heat-

generation object is close to the relay, take care to check the

abnormal temperature-rise and the insulation distance between

the terminals outside of the relay.

12) The relay contacts are encapsulated in an inert gas

atmosphere. Care must be exercised when the relay is to be

used or stored at high ambient temperature.

13) 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 (quick start).

14) In case using a capacitive load (C-load), please take a

countermeasure as pre-charging to the capacitive load so that

the inrush current will not surpass 60A.

The relay might have a contact welding without such

countermeasure.

15) If the relay is used for an inductive load (L load) such that

L/R > 1ms, 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.

16) Use the suitable wire for wire at the load side according to

the current. If the wire diameter is small, the maximum rated

contact current cannot be guaranteed.

(Ex.) Carrying current; 60A: diameter of 15mm2 or more

17) Take care to disconnect to the power supply when wiring.

18) Do not switch the contacts without any load as the contact

resistance may become increased rapidly.

19) The relay satisﬁes the protection level of JIS D 0203 R2 (of

waterproof). Please take any countermeasures additionally if it

should be installed in the place where higher protection level is

required.

20) Do not use this product in such atmosphere where any kind

of organic solvent (as benzene, thinner and alcohol) and the

strong alkali (as ammonia and caustic soda) might be adhered

to this product.

21) 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.

22) Do not make additional manufacturing upon the relay

housing.

23) For AC shutoff these is no contact polarity, but conﬁrm the

electric life using the actual load.

12V

Relay

Coil

ZD18V

ZD18V+

Diode voltage Clamp voltage

(1)

12V

Relay

Coil

ZD30V

Clamp voltage

ZD30V Zener voltage

30V−12V=18V

(2)