CQM5 series Molded Case Circuit Breakers

Structural characteristics

1.Circuit breakers are classified into C type (basic type),L type (standard type), M type (higher breaking type) and H type (high breaking type) according to their rated ultimate short circuit breaking capacity (Icu) grade. It has the advantages of small size, high breaking ability, short flashover distance and anti-vibration.

2.The circuit breaker can be quickly installed using box-type accessories, and accessories can be added in a timely manner according to the user's on-site needs.

3.It has an optional overload alarm without tripping function to meet the user's special application needs.

Execution standard

1.GB/T 14048.1-2012 Low-voltage switchgear and controlgear-Part1:Generalrules

2.GB/T 14048.2-2020 Low-voltage switchgear and controlgear-Part2: Circuit-breakers

3.IEC 60947-1 Low-voltage switchgear and controlgear-Part 1:General rules

4.IEC 60947-2 Low-voltage switchgear and controlgear-Part 2:Circuit-breakers

Model and Meaning

1.CQ: Enterprise code (Zhejiang Chuangqi Electric Co., LTD.)

2.M: Molded case circuit breaker

3.5: Design serial number

4.125: Rated current of frame grade (A);63/100/125/400/630/800

5.M: Rated ultimate short-circuit breaking capacity class (C-basic type; L-standard type; M-Higher breaking type; H-High breaking type)

6.□: Operation mode code (no code-manual direct operation, Z-rotating handle operation, P-electric operation)

7.4: Pole number code (3-tripole,4-quadrupole)

8.300: Trip type and accessories code; 3: compound trip; 2: single magnetic trip; 00:No accessories (see attachment table for specfic accessories code)

9.□: Usage code (no code-distribution type, 2-motor protection type）

10.B: N-pole type of 4P products(type A, B, C, D, no code for 3-pole products)

Type A: N pole is always connected and no over current release is installed;

Type B: N pole breaks together with other poles and no over current release is installed;

Type C: N pole breaks with other poles and over current release is installed;

Type D: N pole is always connected and over current release is installed.

11.125A: Rated current (see technical parameter able)

12.□: Wiring code (no code-board front wiring, B-board rear wiring, C-plug-in type)

Technical parameters

specifications

CQM5-63

CQM5-100

CQM5-125

CQM5-250

CQM5-400

CQM5-630

CQM5-800

Rated current In(A),40℃

10/16/20/25/ 32/40/50/63

10/16/20/25/ 32/40/50/63/ 80/100

16/20/25/32/ 40/50/63/80/ 100/125

100/125/140/ 160/180/200/ 225/250

225/250/ 315/350/400

400/500/630

400/500/630 /700/800

Rated operating voltage

AC380/400/ 415V

AC380/400/ 415V

AC380/400/415

AC380/400/415

AC380/400/415

AC380/400/415

AC660/690V

AC660/690V

AC660/690

AC660/690

AC660/690

AC660/690

Phase spacing

25

25

30

35

48

70

Outline dimensions

Length

130

130

155

165

257

280

wide (3P/4P)

75/100

75/100

90/120

105/140

150/198

210/280

Height (L/H type)

65

65

75.5/87

75/100

104.5

112

Rated insulation voltage Ui[V]

1000

1000

1000

1000

1000

1000

Rated impulse withstand voltage Uimp[kV]

8

8

8

8

8

8

Tripping type

热磁

热磁

热磁

热磁

热磁

热磁

Utilizationcategory

A

A

A

A

A

A

Mechanical life

20000

20000

20000

20000

10000

10000

Electrical life(AC415V)

8000

8000

8000

8000

7000

7000

Poles

3P

4P

3P

4P

3P

3P、4P

3P

3P

3P、4P

3P

3P

3P

4P

3P

3P

3P

4P

3P

Breaking capacity code

L

M

/

C

/

C

L

M

H

C

L

M

H

C

L

M

/

H

L

M

/

H

Icu (kA)

AC380/400/415V

36

55

55

40

40

36

50

70

100

36

50

70

100

36

50

70

100

50

70

100

AC660/690V

/

12

12

12

12

/

/

20

/

/

/

20

/

/

/

20

/

/

20

/

Ics (kA)

AC380/400/415V

36

40

40

30

30

25

36

50

70

25

36

50

70

36

50

70

75

50

70

75

AC660/690V

/

10

10

10

10

/

/

10

/

/

/

10

/

/

/

15

/

/

15

/

Flash over distance(mm)

≤50

≤100

Applicable working environment temperature

-35℃~+70℃

Instantaneous protection type

Power distribution protection

In≤25A:300A;In≥32A:10In

In≤40A:400A; In≥50A:10In

10In

10In

10In

Motor protection

In≤25A:300A;In≥32A:12In

In≤40A:400A; In≥50A:12In

12ln

12ln

12ln

Attached is the code comparison table

Appearance and installation dimensions

Board front wiring dimensions (X-X、Y-Y are the center of 3P circuit breaker)

CQM5-63/100

CQM5-125 (C、L、M、H)

model	H(mm)	H1(mm)
CQM5-125C、125L	75.5	101.5
CQM5-125M、125H	87	113

CQM5-250 (C、L、M、H)

model	H(mm)	H1(mm)
CQM5-250C、250L	75	103.7
CQM5-250M、250H	100	128.7

CQM5-400/630 (C、L、M、H)

CQM5-800 (L、M、H)

Note: The unmarked tolerance class is according to GB/T 1804-C.