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I-6

Motor Protection Circuit Breaker 

J7MN

Specifications

Engineering data and Characteristics

Technical Data according to IEC/EN 60947-1, 60947-2, 60947-4-1 and VDE 0660

This table shows the rated ultimate short-circuit breaking capacity Icu 
and the rated service short-circuit breaking capacity Ics of the J7MN 
circuit-breakers with different operational voltages as a function of 
the rated current In of the circuit-breakers. The circuit-breakers can 
be fed at the top or bottom supply terminals without any reduction of 
the rated data.

If the short-circuit current exceeds the rated short-circuit breaking 
capacity of the circuit-breaker specified in the tables at the installa-
tion point, a back-up fuse is to be used. The maximum rated current 
for the back-up fuse is specified in the tables. These fuses are only 
suitable for the short-circuit-currents as indicated on the fuses.

Circuit- 
breaker

Rated
current In

up to AC 240V

*1

*1

10% overvoltage

up to AC 400V

*1

up to AC 415V

*2

 

*2

5% overvoltage

up to AC 440V

*1

up to AC 460V

*2

up to AC 500V

*1

up to AC 525V

*2

up to AC 690V

*1

Icu

Ics

max.
fuse

*3

(gL/gG)

*3

Back up fuse required if short-circuit current at installation point > Icu

Icu

Ics

max.
fuse

*3

(gL/gG)

Icu

Ics

max.
fuse

*3

(gL/gG)

Icu

Ics

max.
fuse

*3

(gL/gG)

Icu

Ics

max.
fuse

*3

(gL/gG)

Type 

A

kA

kA

A

kA

kA

A

kA

kA

A

kA

kA

A

kA

kA

A

J7MN-3P

0.16 to 0.63

100

100

--

100

100

--

100

100

--

100

100

--

100

100

--

1

100

100

--

100

100

--

100

100

--

100

100

--

100

100

--

1.6

100

100

--

100

100

--

100

100

--

100

100

--

3

3

20

2.5

100

100

--

100

100

--

100

100

--

50

100

--

3

3

35

4

100

100

--

100

100

--

100

38

50

15

38

50

3

3

40

6

100

100

--

100

100

--

50

11

50

10

11

40

3

3

50

8

100

100

--

100

100

--

15

11

63

10

8

40

3

3

63

10

100

100

--

50

38

80

15

11

63

6

8

63

3

3

63

13

100

100

--

50

38

80

10

8

80

6

5

63

3

3

63

17

50

38

--

20

15

100

10

8

80

6

5

80

3

3

63

22

40

30

125

15

11

100

8

6

100

6

5

80

3

3

63

26

40

30

125

15

11

100

8

6

100

6

5

80

3

3

63

32

30

22

125

15

11

100

6

4

100

5

4

80

3

3

63

J7MN-3R

0.16 to 1.0

100

100

--

100

100

--

100

100

--

100

100

--

100

100

--

1.6

100

100

--

100

100

--

100

100

--

100

100

--

100

100

--

2.5

100

100

--

100

100

--

100

100

--

100

100

--

8

8

35

4

100

100

--

100

100

--

100

100

--

100

100

--

8

8

40

6

100

100

--

100

100

--

100

100

--

100

100

--

6

6

50

8

100

100

--

100

100

--

50

38

80

50

38

63

6

6

63

10

100

100

--

100

100

--

50

38

80

50

38

80

6

6

63

13

100

100

--

100

100

--

50

38

80

42

32

80

6

6

63

17

100

100

--

50

38

100

20

15

80

10

8

80

4

4

63

22

100

100

--

50

38

125

20

15

100

10

8

80

4

4

63

26

100

100

--

50

38

125

20

15

100

10

8

80

4

4

63

32

100

100

--

50

38

125

20

15

100

10

8

80

4

4

63

J7MN-6R

26

100

100

--

50

50

125

35

27

125

12

9

100

5

5

80

32

100

100

--

50

50

125

35

27

125

10

8

100

5

5

80

40

100

100

--

50

50

160

35

27

125

10

8

100

5

5

80

50

100

100

--

50

50

160

35

27

125

10

8

100

5

5

80

63

100

100

--

50

50

160

35

27

160

10

8

100

5

5

80

J7MN-9R

63

100

100

--

50

38

160

40

30

160

12

9

100

6

5

80

75

100

100

--

50

38

160

40

30

160

8

6

125

5

4

100

90

100

100

--

50

38

160

40

30

160

8

6

125

5

4

125

100

100

100

--

50

38

160

40

30

160

8

6

125

5

4

125

--

No back-up fuse required

Summary of Contents for J7MN -

Page 1: ...lease Shunt release Three phase busbar system Moulded plastic enclosures Door coupling rotary mechanisms Insulated Link modules Ordering Information Model Number Legend 1 Motor Protection Circuit Brea...

Page 2: ...4 22 286 15 J7MN 3P 22 26 11 18 26 338 15 J7MN 3P 26 32 15 22 32 416 15 J7MN 3P 32 0 16 0 10 0 16 2 1 100 J7MN 3R E16 0 25 0 06 0 16 0 25 3 3 100 J7MN 3R E25 0 4 0 09 0 25 0 4 5 2 100 J7MN 3R E4 0 63...

Page 3: ...24 V 50 Hz 28 V 60 Hz J77MN S 24 110 127 V 50 Hz 120 V 60 Hz J77MN S 110 220 230 V 50 Hz 240 260 V 60 Hz J77MN S 230 240 V 50 Hz 277 V 60 Hz J77MN S 240 380 400 V 50 Hz 440 460 V 60 Hz J77MN S 400 41...

Page 4: ...mm In 64 A 1 1 The sum of all added currents per module must not exeed the above mentioned nominal currents for 2 units J7MN 3P J7MN 3R 1 J75 CPM 2 45 6 for 3 units 1 J75 CPM 3 45 6 for 4 units 1 J75...

Page 5: ...3 7 5 J7KN 18 J77MN VKN 3 Not Needed J7MN 3P J7MN 3R J7KN 18 xx VKN3 Included J7KNG 18 xx D J77MN VKG 3 11 J7KN 22 J77MN VKN 3 Not Needed J7MN 3P J7MN 3R J7KN 22 xx VKN3 Included J7KNG 22 xx D J77MN...

Page 6: ...100 100 100 100 100 100 100 1 100 100 100 100 100 100 100 100 100 100 1 6 100 100 100 100 100 100 100 100 3 3 20 2 5 100 100 100 100 100 100 50 100 3 3 35 4 100 100 100 100 100 38 50 15 38 50 3 3 40 6...

Page 7: ...R per conducting path P I 3 In 26 up to 63 A 12 6 W In up to 63 A W 11 9 W In 75 up to 100 A 15 W Shock resistance acc to IEC 68 Part 2 27 25 g Degree of protection acc to IEC 60 529 IP 20 Shock hazar...

Page 8: ...ty 3 VA 1 2 W Response voltage trip 0 7 to 1 1 Us V Short circuit protection for auxiliary and control circuits Fuse gL gG 10 A Miniature circuit breaker C characteristic 6 A Conductor cross sections...

Page 9: ...0 10 10 10 10 10 10 10 kA Motor load 1 phase 115 V 1 8 1 4 1 3 1 2 1 2 1 11 2 2 2 HP 230 V 1 10 1 6 1 3 1 2 1 11 2 2 3 3 5 5 HP Motor load 3 phase 200 V 1 2 3 4 1 2 2 3 3 5 71 2 71 2 HP 230 V 1 3 1 2...

Page 10: ...AC are practically short circuit proof at this voltage as higher short circuit currents are not usually encountered at the instal lation point Back up fuses are only necessary if the short circuit cu...

Page 11: ...690 mm 30 30 30 30 50 inch 1 18 1 2 1 18 1 18 2 Height of arcing spaces clearance from earthed parts at Ue V 240 415 460 525 690 mm 50 50 50 50 50 inch 2 2 2 2 2 Height of arcing spaces clearance fro...

Page 12: ...77MN DC 1 Max for shackle diameter for padlock 8 mm In the interest of product improvement specifications are subject to change without notice ALL DIMENSIONS SHOWN ARE IN MILLIMETERS To convert millim...

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