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DC Miniature Circuit Breakers

DC Miniature Circuit Breakers

P/N & Price

DC Miniature Circuit Breakers provide overcurrent and short circuit protection for higher voltage DC circuits. Such as A DC circuit breaker is designed to protect the cables located between each string of photovoltaic modules and the photovoltaic inverter against overloads and short circuits.

Product Description

NDB2ZB-40 series

The series as including:

Trip Curve C

NDB2Z-40*


Technical Parameters

Rated current16A  20A  25A  32A  40A 
Poles1P+Neutral (in series)
Per pole frame width45mm
StandardIEC60947-2
Breaking capacity10.0KA
CertificationCCC  RoHS


Rated Voltage

DC 250V
1P+Neutral (in series)


Trip Curve Chart (NDB2Z-40 Series)

c-curve-ndb2zb-40-16ac-curve-ndb2zb-40-20a
c-curve-ndb2zb-40-25ac-curve-ndb2zb-40-32ac-curve-ndb2zb-40-40a


NDB2Z-63 Series

The series as including:

Trip Curve B

NDB2Z-63 B*1  NDB2Z-63 B*2

Trip Curve C

NDB2Z-63 C*1  NDB2Z-63 C*2


Designed for photovoltaic

Trip Curve B

NDB2Z-63 B*3  NDB2Z-63 B*4

Trip Curve C

NDB2Z-63 C*3  NDB2Z-63 C*4


Technical Parameters

Rated current1A  1.2A  1.5A  1.6A  2A  3A  4A  5A  6A  7A  8A  10A  12A  13A  15A  16A  20A  25A  30A  32A  35A  40A  50A  60A  63A
Poles1 Pole  2 Poles  3 Poles  4 Poles
Per pole frame width18mm
StandardIEC60947-2  UL1077
Breaking capacity10.0KA
CertificationCCC  TUV  CE  UL1077  RoHS


Rated Voltage

DC 250V1 Pole  2 Ploes
DC 750V3 Poles
DC 1000V4 Poles


Trip Curve Chart (NDB2Z-63 Series)

Trip Curve BTrip Curve C
b-curve-ndb2z-63c-curve-ndb2z-63


NDB6Z-125 series

The series as including:

Trip Curve C

NDB6Z-125 C*1  NDB6Z-125 C*2  NDB6Z-125 C*3  NDB6Z-125 C*4


Technical Parameters

Rated current63A  80A  100A  125A
Poles1 Pole  2 Poles  3 Poles  4 Poles
Per pole frame width27mm
StandardIEC60947-2
Breaking capacity15.0KA  5.0KA (DC500V-DC1000V)
CertificationCCC  TUV  CE  CB  RoHS


Rated Voltage

DC 60V/80V/125V/250V/300V1 Pole
DC 500V/600V2 Poles
DC 750V3 Poles
DC 1000V3 Poles  4 Poles
DC 1200V4 Poles


Trip Curve Chart (NDB2Z-63 Series)

c-curve-ndb6z-125


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