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.

Thermal Resistance Rth (Back of

Junction SSR) (Examples)

Thermal Resistance Rth of Heat Sinks

(Examples)

Note: When using a commercially available heat sink, use one with a

thermal resistance equal to or less that the OMRON Heat Sink.

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

G3NA-210B

G3NA-410B

G3NA-220B

G3NA-420B

G3NA-240B

G3NA-440B(-2)/-450B(-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)

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-D210B

G3NA-275B-UTU(-2)

G3NA-475B-UTU(-2)

G3NA-290B-UTU(-2)

G3NA-490B-UTU(-2)

40

20

0

−20

−40

100

80

60

40

20

0

−20

−30

Ambient temperature (

°C)

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

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

Temperature

Characteristics

(for Must Operate

Voltage and Must

Release Voltage)

Heat Sink Area

vs. Load Current

G3NA-2

@@B AC input

G3NA-220B

Model

Rth (

°C/W)

G3NA-205B

3.22

G3NA-210B

2.62

G3NA-220B

1.99

G3NA-240B

0.45

G3NA-275B-UTU

G3NA-475B-UTU

G3NA-290B-UTU

G3NA-490B-UTU

0.45

G3NA-D210B

2.62

Model

Rth (

°C/W)

Y92B-N50

2.8

Y92B-N100

1.63

Y92B-N150

1.38

Y92B-A100

1.63

Y92B-A150N

1.37

Y92B-A250

1.00

Y92B-P250NF

0.46