ICHYTI is a top-tier manufacturer in China that provides premium-quality 125a dc circuit breaker. Our company is dedicated to building a reputable brand in the electrical industry through an emphasis on talent acquisition, rigorous quality control, and scientific development. We have attained the ISO9001 quality system, ISO14001 environmental system, and OHSAS18001 occupational health and safety system certifications as proof of our commitment to excellence. Purchase directly from us at a low price to experience the high-quality 125a dc circuit breaker we offer.
ICHYTI Low Price Wholesale 125a dc circuit breaker Made in China is a method of voltage regulation by transformer tap changer, which differs from traditional excitation tap changer in that it does not have the ability to briefly open during load switching gear. This is because when switching gears, directly disconnecting the load current can cause arcing at the contacts and burn out the tap changer, or cause a short circuit. Therefore, when adjusting gears, the transformer must be powered off first. 125a dc circuit breaker is usually used for transformers that do not have very strict voltage requirements and do not require frequent gear adjustment.
Product Model |
NBT2-125DC |
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Pole |
1P |
2P |
4P |
Rated Current (A) |
100, 125 |
100, 125 |
80, 100, 125 |
Rated Voltage (Vdc) |
300 |
600 |
1000 |
Breaking Capacity(kA) |
10 |
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Characteristic Curve |
C |
||
Working Temperature |
-5℃〜+40℃ |
||
Enclosed Class |
IP20 |
||
Standard |
IEC60947-2 |
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Electrical Life |
Not less than 8000 times |
||
Mechanical Life |
Not less than 20000 times |
◉ Neutral busbar circuit breakers (NBS)
◉ Neutral busbar grounding circuit breakers (NBGS)
◉ Metal circuit transfer circuit breakers (MRTB)
◉ Earth circuit transfer circuit breakers (ERTB)
The development of DC circuit breakers faces two main challenges. Firstly, unlike AC systems, there is no natural zero crossing of current in DC systems, so the arc extinguishing technology used in mature AC circuit breakers cannot be used. Secondly, the inductive components in the DC system can store a large amount of energy, which significantly increases the difficulty of breaking DC fault currents.