G3NA

7

One Cycle Surge Current

The values shown by the solid line are for non-repetitive inrush currents.

Keep the inrush current below the values shown by the dotted line if it occurs repetitively.

60

40

20

0

5,000

1,000

500

200

100

50

30

10

Energized time (ms)

150

100

50

0

5,000

1,000

500

200

100

50

30

10

Energized time (ms)

200

150

100

50

0

5,000

1,000

500

200

100

50

30

10

Energized time (ms)

400

300

200

100

0

5,000

1,000

500

200

100

50

30

10

Energized time (ms)

G3NA-205B-UTU

G3NA-210B-UTU

G3NA-410B-UTU

G3NA-220B-UTU

G3NA-225B-UTU

G3NA-420B-UTU

G3NA-425B-UTU-2

G3NA-240B-UTU

G3NA-250B-UTU

G3NA-440B-UTU-2

G3NA-450B-UTU-2

900

800

700

600

500

400

300

200

100

0

1,000

100

50

300

30

10

Energized time (ms)

1,200

800

1,000

600

400

200

0

1,000

100

50

300

30

10

Energized time (ms)

G3NA-275B-UTU-2

G3NA-475B-UTU-2

G3NA-290B-UTU-2

G3NA-490B-UTU-2

28

30

26

24

22

20

18

16

14

12

10

8

6

4

2

0

2,000

1,000

500

200 300

100

50 70

30

20

10

Energized time (ms)

G3NA-D210B-UTU

3,000

2,000

1,000

700

500

300

200

100

70

50

30

20

24

22

20

18

16

14

12

10

8

6

4

2

0

Load current (A)

Note: The heat sink area refers to the combined area

of the sides of the heat sink that radiate heat.

For example, when a current of 18 A is allowed

to flow through the SSR at 40

°C, the graph

shows that the heat sink area is about 450 cm2.

Therefore, if the heat sink is square, one side of

the heat sink must be 15 cm (

) or

longer.

Ambient

temperature 80

°C

Aluminum plate

3.2 mm thick

Ambient

temperature 40

°C

450 (cm2)/2

Heat Sink Area vs. Load Current

G3NA-220B-UTU