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Miniature Circuit Breakers

Miniature Circuit Breakers

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Miniature circuit breakers(MCBs) - 1pole, 2poles, 3poles, 4poles; Rated current: 1 - 25 Amperes; Type B, Type C, Type D; 60/80Vdc, 120Vac, 230/240Vac, 400/415Vac; Breaking capacity: 4.5kA, 6.0kA, 10.0kA, 15.0kA.

Product Description

NDM1-63 Series

The series as including: 

Trip Curve B

NDM1-63 B*1  NDM1-63 B*2  NDM1-63 B*3  NDM1-63 B*4

Trip Curve C

NDM1-63 C*1  NDM1-63 C*2  NDM1-63 C*3  NDM1-63 C*4

Trip Curve D

NDM1-63 D*1  NDM1-63 D*2  NDM1-63 D*3  NDM1-63 D*4


Technical Parameters

Rated current1A  2A  3A  4A  5A  6A  10A  16A   20A  25A  32A  40A  50A  63A
Poles1 Pole  2 Poles  3 Poles  4 Poles
Per pole frame width18mm
StandardIEC60898-1
Breaking capacity6.0kA  4.5KA ((D curve, B or C curve when current is 50A/63A)
Certification CCC  TUV  CE  RoHS


Rated Voltage

AC 230V/240V1 Pole
AC 400V2 Poles  3 Poles  4 Poles
DC 80V1Pole  2 Poles


Notes: 

- 50A and 63A products are not available for the type D curve. 

- The products breaking capacity of type B curve and type C curve with the rated current of 1-40A are 6.0kA, 50A and 63A type D curve products are 4.5kA. 

- Only one type of the protection accessories can be assembled on the right side.

- A maximum of 3 OFs or SDs can be assembled on the left side of each product, but recommended no more than 2 assembly.

- If the shunt release accessory is assembled on the right side, the residual current protection accessory or over-voltage/under-voltage accessory can't be assembled.


NDM1T-63 Series

The series as including: 

Trip Curve B

NDM1T-63 B*1  NDM1T-63 B*2  NDM1T-63 B*3  NDM1T-63 B*4

Trip Curve C

NDM1T-63 C*1  NDM1T-63 C*2  NDM1T-63 C*3  NDM1T-63 C*4

Trip Curve D

NDM1T-63 D*1  NDM1T-63 D*2  NDM1T-63 D*3  NDM1T-63 D*4


Technical Parameters

Rated current1A  2A  3A  4A  5A  6A  10A  16A   20A  25A  32A  40A  50A  63A
Poles1 Pole  2 Poles  3 Poles  4 Poles
Per pole frame width18mm
StandardIEC60947-2
Breaking capacity6.0kA
Certification CCC  TUV  CE  RoHS


Rated Voltage

AC 230V/240V1 Pole
AC 400V/415V2 Poles  3 Poles  4 Poles
DC 60V1Pole


Trip Curve Chart (NDM1-63 Series & NDM1T-63 Series)

Trip Curve BTrip Curve CTrip Curve D
b-curve-ndm1-63-ndm1-63tc-curve-ndm1-63-ndm1-63td-curve-ndm1-63-ndm1-63t


NDM1-125 Series

The series as including: 

Trip Curve C

NDM1-125 C*1  NDM1-125 C*2  NDM1-125 C*3  NDM1-125 C*4

Trip Curve D

NDM1-125 D*1  NDM1-125 D*2  NDM1-125 D*3  NDM1-125 D*4


Technical Parameters

 current50A  63A  80A  100A  125A
Poles1 Pole  2 Poles  3 Poles  4 Poles
Per pole width27mm
StandardIEC60947-2  UL1077
Breaking capacity10.0kA
Certification CCC  TUV  CE  UL1077  RoHS


Rated Voltage

AC 230V/240V1 Pole  2 Poles  3 Poles  4 Poles
AC 400V/415V1 Pole  2 Poles  3 Poles  4 Poles
DC 60V/80V1Pole
DC80V/125V
2 Poles  3 Poles  4 Poles


Trip Curve Chart (NDM1-125 Series)

Trip Curve CTrip Curve D
c-curve-ndm1-125d-curve-ndm1-125


Notes: 

- The NDM1-125 circuit breaker has an isolating function with the practical indication of the contact position.

- Only one type of protection accessories can be assembled on the right side

- A maximum of 3 OFs or SDs can be assembled on the left side of each product, and the recommended number of assembly no more than 2.

- If the shunt release accessory is assembled on the right side, the residual current protection accessory or over-voltage/under-voltage protection accessory can't be assembled.

 

NDB1-63 Series

The series as including: 

Trip Curve B

NDB1-63 B*1  NDB1-63 B*1P+N  NDB1-63 B*2  NDB1-63 B*3  NDB1-63 B*4

Trip Curve C

NDB1-63 C*1  NDB1-63 C*1P+N  NDB1-63 C*2  NDB1-63 C*3  NDB1-63 C*4

Trip Curve D

NDB1-63 D*1  NDB1-63 D*1P+N  NDB1-63 D*2  NDB1-63 D*3  NDB1-63 D*4


Technical Parameters

Rated current1A  2A  3A  4A  5A  6A  10A  16A  20A  25A  32A  40A  50A  63A
Poles1 Pole  2 Poles  3 Poles  4 Poles  1P+N  3P+N
Per pole width17.6mm
StandardIEC60898-1
Breaking capacity6.0kA
Certification CCC  TUV  CE  RoHS


Rated Voltage

AC 230V/240V1 Pole  1P+N
AC 400V/415V1 Pole  2 Poles  3 Poles  4 Poles  3P+N
DC 60V/80V1Pole  2 Poles


Trip Curve Chart (NDB1-63 Series)

Trip Curve BTrip Curve CTrip Curve D
b-curve-ndb1-63c-curve-ndb1-63d-curve-ndb1-63


NDB2-40 Series

The series as including: 

Trip Curve B

NDB2-40 B* 1P+N

Trip Curve C

NDB2-40 C* 1P+N


Technical Parameters

Rated current

2A  4A  6A  10A  16A  20A  25A  32A  40A

Poles1P+N
Per pole width18mm
StandardIEC60898-1  UL1077
Breaking capacity6.0kA
Certification CCC  TUV  CE  UL1077  RoHS


Rated Voltage

AC 230V/240V1P+N


Trip Curve Chart (NDB2-40 Series)

Trip Curve BTrip Curve C
b-curve-ndb2-40c-curve-ndb2-40


NDB2-63 Series

The series as including: 

Trip Curve B

NDB2-63 B*1  NDB2-63 B*2  NDB2-63 B*3  NDB2-63 B*4

Trip Curve C

NDB2-63 C*1  NDB2-63 C*2  NDB2-63 C*3  NDB2-63 C*4

Trip Curve D

NDB2-63 D*1  NDB2-63 D*2  NDB2-63 D*3  NDB2-63 D*4


Technical Parameters

Rated current

1A  2A  3A  4A  5A  6A  8A  10A  12A  13A  16A  20A  25A  32A  40A 50A  63A

Poles1 Pole  2 Poles  3 Poles  4 Poles
Per pole width18mm
StandardIEC60898-1  UL1077
Breaking capacity10.0kA
Certification CCC  TUV  CE  UL1077  RoHS


Rated Voltage

AC 230V/240V1 Pole
AC 400V/415V2 Poles  3 Poles  4 Poles
DC80V
1 Pole  2 Poles


Trip Curve Chart (NDB2-63 Series)

Trip Curve BTrip Curve CTrip Curve D
b-curve-ndb2-63c-curve-ndb2-63d-curve-ndb2-63

Notes: 

- NDB2-63 series has the practical indication function of the contact position. 

- Only one type of protection accessory can be assembled. 

- A maximum of 3 OF2s or SD2s can be assembled for each product. 

- If the accessory ATM is used, it shall be used together with TM2 and SD2, but TM2 can be used separately.


NDB2T-63 Series

The series as including: 

Trip Curve B

NDB2T-63 B*1  NDB2T-63 B*2  NDB2T-63 B*3  NDB2T-63 B*4

Trip Curve C

NDB2T-63 C*1  NDB2T-63 C*2  NDB2T-63 C*3  NDB2T-63 C*4

Trip Curve D

NDB2T-63 D*1  NDB2T-63 D*2  NDB2T-63 D*3  NDB2T-63 D*4


Technical Parameters (NDB2T-63 Series)

Rated current

1A  1.2A  1.5A  1.6A  2A  3A  4A  5A  6A  7A  8A  10A  12A  13A  15A  16A  20A  25A  30A  32A  40A  50A  60A  63A

Poles1 Pole  2 Poles  3 Poles  4 Poles
Per pole width18mm
StandardIEC60947-2  UL1077
Breaking capacity10.0kA
Certification CCC  TUV  CE  UL1077  RoHS


Rated Voltage (NDB2T-63 Series)

Rated current

1A  1.2A  1.5A  1.6A  2A  3A  4A  5A  6A  7A  8A  10A  12A  13A  15A  16A  20A  25A  30A  32A  40A  50A  60A  63A

Poles1 Pole  2 Poles  3 Poles  3 Poles
Per pole width18mm
StandardIEC60947-2  UL1077
Breaking capacity10.0kA
Certification CCC  TUV  CE  UL1077  RoHS


NDB2T-63 with UL489

The series as including: 

Trip Curve B

NDB2T-63 B*1  NDB2T-63 B*2  NDB2T-63 B*3

Trip Curve C

NDB2T-63 C*1  NDB2T-63 C*2  NDB2T-63 C*3

Trip Curve D

NDB2T-63 D*1  NDB2T-63 D*2  NDB2T-63 D*3


Technical Parameters (NDB2T-63 with UL489)

Rated current

1A  1.2A  1.5A  1.6A  2A  3A  4A  5A  6A  7A  8A  10A  12A  13A  15A  16A  20A  25A  30A  32A  40A  50A  60A  63A

Poles1 Pole  2 Poles  3 Poles
Per pole width18mm
StandardUL489
Breaking capacity10.0kA
Certification UL489, RoHS


Rated Voltage (NDB2T-63 with UL489)

AC AC120/277V1 Pole
AC 240V2 Poles  3 Poles
AC480Y/227V
2 Poles  3 Poles
DC 60V1 Pole  2 Poles
DC 125V
2 Poles

 

Trip Curve Chart (NDB2T-63 Series & NDB2T-63 with UL489)

Trip Curve BTrip Curve CTrip Curve D
b-curve-ndb2t-63c-curve-ndb2t-63d-curve-ndb2t-63


NDB6-125 series

The series as including: 

Trip Curve C

NDB6-125 C*1  NDB6-125 C*2  NDB6-125 C*3  NDB6-125 C*4

Trip Curve D

NDB6-125 D*1  NDB6-125 D*2  NDB6-125 D*3  NDB6-125 D*4


Technical Parameters (NDB6-125 Series)

Rated current

63A  80A  100A  125A ( Curve D )

Poles1 Pole  2 Poles  3 Poles  4 Ploes
Per pole width27mm
StandardIEC60947-2
Breaking capacity15.0kA
Certification CCC  TUV  CE  CB  RoHS


Trip Curve Chart (NDB6-125 Series)

Trip Curve CTrip Curve D
c-curve-ndb6-125d-curve-ndb6-125


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