Technical features

3LD main control and EMERGENCY STOP switches

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3KD switch disconnectors: Box terminals

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3KD switch disconnectors: Flat terminals

Size

1

Type

3LD20

3LD21

3LD22

3LD25

3KD...-.M

3LD main control and EMERGENCY STOP switches

3KD switch disconnectors

Rated current In

A

16

25

32

63

16

32

63

Number of poles

  • 3

  • 4

  • 6

Connection

  • Flat terminals

--

--

--

--

--

--

--

  • Box terminals

Operating mechanisms

  • Front operating mechanism

  • Lateral operating mechanism

--

--

--

--

Operating and short-circuit behavior

  • Rated short-time withstand current Icw
    (1 s current, rms value)

kA

0.34

0.64

0.64

1.26

3

3

3

  • Rated conditional short-circuit current with upstream fuses at 690 V1)

kA rms

50

50

50

50

100

100

100

1) Valid for the combination of 3KD switch disconnector and fuse type 3NA…, characteristic gG

✓ Available

-- Not available

3LD main control and EMERGENCY STOP switches

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3KD switch disconnectors: Box terminals

127952198283_Thumbnail.png

3KD switch disconnectors: Flat terminals

127952172683.png

Size

2

Type

3LD27

3LD28

3LD23

3KD...-.N

3LD main control and EMERGENCY STOP switches

3KD switch disconnectors

Rated current In

A

100

125

160

80

100

125

160

200

Number of poles

  • 3

  • 4

  • 6

Connection

  • Flat terminals

--

--

--

  • Box terminals

--

Operating mechanisms

  • Front operating mechanism

  • Lateral operating mechanism

--

--

--

Operating and short-circuit behavior

  • Rated short-time withstand current Icw
    (1 s current, rms value)

kA

2

2

4

4

4

4

4

4

  • Rated conditional short-circuit current with upstream fuses at 690 V1)

kA rms

50

20

50

65

65

65

65

50

1) Valid for the combination of 3KD switch disconnector and fuse type 3NA…, characteristic gG

✓ Available

-- Not available

3LD main control and EMERGENCY STOP switches

127956780939_Thumbnail.png

3KD switch disconnectors: Box terminals

3KD switch disconnectors: Flat terminals

127952313483_Thumbnail.png
127952467083_Thumbnail.png
127952492683.png

Size

3

4

5

Type

3LD24

3KD....-.P

3KD....-.Q

3KD....-.R

3LD main control and EMERGENCY STOP switches

3KD switch disconnectors

Rated current In

A

250

200

250

315

400

500

630

800

1000

1250

1600

Number of poles

  • 3

  • 4

  • 6

Connection

  • Flat terminals

--

  • Box terminals

--

--

--

--

--

--

--

Operating mechanisms

  • Front operating mechanism

  • Lateral operating mechanism

--

Operating and short-circuit behavior

  • Rated short-time withstand current Icw
    (1 s current, rms value)

kA

4

13

13

13

13

30

30

30

50

50

50

  • Rated conditional short-circuit current with upstream fuses at 690 V1)

kA rms

50

65

65

35

35

65

65

50

--

--

--

1) Valid for the combination of 3KD switch disconnector and fuse type 3NA…, characteristic gG

✓ Available

-- Not available

Further information on 3LD main control and EMERGENCY STOP switches is provided in Chapter Overview of 3LD main control and EMERGENCY STOP switches.