Connection. Mitsubishi Electric AE2000-SWA, AE4000-SW, Low-Voltage Air Circuit Breakers series Type AE-SW, AE3200-SW, AE630-SW

Connection

Use M12 screws (made of copper), spring washers, and small washers to connect to the conductors.

Clean the contact surface and securely tighten the screws with a appropriate torque.

The connecting area on main circuit terminal of the breaker is different depending on the shape of the breaker’s terminal.

Refer to the outline dimensions in the catalog.

 Main circuit

Horizontal connection CAUTION

25mm

CAUTION

Small washer

M12

45±5N·m

Small washer

Spring washer

Small washer

Conductor

Fig. 10-1

Use small washers to connect that the washers do not overlap with each other.

Fig. 10-2

CAUTION

Conductor

Small washer

Spring washer

Breaker terminal

(silver plated)

Fig. 10-3

Appropriate tightening torque for conductor connection

Bolt size Tightening torque (N·m)

M12 45±5

Keep an insulation distance between the conductors to be connected according to the standard of the panel.

Breaker

Bolt

Please tighten screws after checking breaker’s terminal and conductor certainly contact with each other.

Make sure the conductor doesn’t apply the force to breaker’s terminal in any direction.

Fig. 10-4

E-10

Since fault current flowing through the conductors causes large electromagnetic forces, the conductors should be secured firmly, using the values in the below table as a reference. Max. distance between fixing support and breaker bus bar should be less than 200mm.

Breaker

Conductor

200 mm or less

Supporting fixture

Supporting between live parts of different poles and between the power supply and load terminals.

Fig. 11-1

Table 11-1 Electromagnetic force per 1 m of conductor (in the case of three phase short circuit)

Type

AE630-SW ~

AE1600-SW

AE2000-SWA AE2000-SW ~

AE3200-SW

Drawout type

AE4000-SWA

Fixed type

(N/m)

AE4000-SW ~

AE6300-SW

3 poles 4 poles 3 poles 4 poles 3 poles 4 poles

Conductor distance (mm)

Prospective fault current kA (pf)

30(0.2)

42(0.2)

50(0.2)

65(0.2)

75(0.2)

85(0.2)

100(0.2)

130(0.2)

85

-

-

-

-

7700

15100

21400

36100

115

-

-

-

-

5700

11200

15800

26700

105

-

-

-

-

6300

12200

17300

29300

130

5100

9900

14000

23600

31500

40400

-

-

190

3500

6800

9600

16200

21500

27600

-

-

170

3900

7600

10700

18100

24100

30900

-

-

152

4300

8500

12000

20200

26900

34500

-

-

145

4500

8900

12600

21200

28200

36200

-

-

262

2500

5000

7000

11800

15800

20000

27800

47000

When selecting conductors to be connected to the breakers, ensure that they have a sufficient current capacity. Refer to the right table.

Table 11-2 Conductor size

(IEC 60947-1, Ambient Temp. 40 °C, Open air)

Rated current

MAX (A)

630

1000

1250

1600

2000

2500

3200* 1

Conductor to be connected (copper)

Quantity Conductor size (mm) Arrangement

2

2

40 x 5

60 x 5

2

2

3

4

3

2

80 x 5

100 x 5

100 x 5

100 x 5

100 x 10

150 x 10

4000

AE4000-SWA drawout type

4000

AE4000-SWA fixed type

4

3

150 x 10

150 x 10

Vertical

(Note) Table 11-2 shows the conductor size that is indicated in IEC 60947-1 with an ambient temperature of 40 °C and in an open air environment.

Fig. 11-2 shows the testing conditions.

3m

Breaker

2m

4000

(AE4000-SW)

4 100 x 10

5000

6300

4

4

150 x 10

200 x 10 Fig. 11-2

*1 For 3200 A, connect a conductor which is sized for 3150 A.

For 3200 A or higher, there is no specification by IEC (IEC 60947-1). (Specification by the manufacturer)

 Control circuit terminal block

Tighteing with excessive torque above the specification may cause damages of terminals and screws.

Be sure to tighten with the specified torque.

After removing screws, make sure not to tighten the screws diagonally.

Be careful not to apply excessive tension to the wirings.

Use a cross-head screwdriver with a diameter that matches the cross-shaped groove.

M3.5 ................................. No. 2

Crossover wiring

M3.5 x 10

Torque: 1.0 ± 0.2N·m

Control circuit terminal block

Applicable crimp-type terminals

A A

A = 7.2 mm or less

Applicable crimp-type terminals for M3.5 screws with an outer diameter of 7.2 mm or less.

(Wire size 1.25 mm 2 ~ 2.0 mm 2 )

Fig. 11-3 Fig. 11-4 Fig. 11-5

E-11