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CNC Electric Group Co., Ltd.

Mini Circuit Breaker, Mcb, Miniature Circuit Breaker manufacturer / supplier in China, offering Dpn Mini Circuit Breaker (YCBKN), Drop out Fuse (PRW1-24), Double-Winding Non-Excitation Tap-Changing Oil Immersed Distribution Transformer of 6~10V and so on.

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Dpn Mini Circuit Breaker (YCBKN)

FOB Price: US $1.2-3.8 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $1.2-3.8/ Piece
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Production Capacity: 3000/Day
Transport Package: Export Packing
Payment Terms: L/C, T/T

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Basic Info
  • Model NO.: YCBKN
  • Operation: Electric Type
  • Arc-extinguishing Medium: Air
  • Structure: MCB
  • Certification: ISO9001-2000, CE, CB, CCC
  • Rated Current (a): 1, 2, 6, 10, 16, 20, 25, 32, 40, 50, 63
  • Dielectric Test Voltage(Kv): 2.0
  • Rated Impulse Withstand Voltage(V): 6000
  • Protection Degree: IP20
  • Mechanical Life: 20000
  • Specification: IEC/EN 60898-1, CE, 3C, CB
  • Breaking Capacity: Low Voltage Circuit Breakers
  • Speed: Normal Type Circuit Breaker
  • Installation: Insert
  • Poles Number: 1p-4p
  • Rated Voltage (V): 230/400
  • Rated Frequency(Hz): 50/60
  • Rated Breaking Capacity(a): 3000,4500
  • Insulation Voltage(V): 500
  • Curve: B,C,D
  • Trademark: CNC
  • Origin: Zhejiang, China
Product Description
About CNC
1. China Top 500 Enterprise
2.26 years rich experience in manufacturing electrical products
3. Sales in over 100 countries

High breaking miniature automatic miniature circuit breaker application YCBKN has advanced structure, reliable performance, high breaking capability and pleasing outlook and small size. The case and the partsare adopted by high fire-resistant and shockproof plastics. It is suitable for using in the circuit with 50HZ/60HZ, rated working voltage 400V and below, rated current up to 63A for protecting the illuminating, distributing line and of office, house and building from overload, short circuit. It also can be used for infrequently switching line under the normal condition. The product comply with standards IEC60989 and GB10963.

1. Application: For protecting cables and equipments against overload and short circuit.
2. General rules for choosing MCB.
A. Technical data of the network at the point considered:
The earthing systems, short-circuit current at the circuit breaker installation point,
Which must always be less than the breaking capacity of this device, network normal voltage.
B. There are 3 curve characteristics for magnetic operation:
B curve(3-5 In) protection and control of the circuits against length cables in TN and IT systems.
C curve(5-10 In) protection and control of the circuits against overloads and short-circuits; Protection for resistive and inductive loads with low inrush current.
D curve(10-20 In)protection and control of the circuits against overloads and short-circuits; Protection for circuits which supply loads with high inrush current at the circuit closing (LV/LV transformers, breakdowm lamps).

CNC Circuit Breaker:
1. We have new designed circuit breaker by our R&D Dpartment.
2. Perfect testing system ensure each product is qualified.
3. Annual output is about 15, 000, 000 Poles.

1. We Are Suppler of Three Gorges Project, China National Petroleum, Sinopec Group;
2. China Famous Export Enterprise, Our Products Sale in Over 100 Countries;
3. Our Laboratory is China Key Industrial Electrical Laboratory;
4. We have completely sales service system, ensure every detail is going smooth.
5. We have new designed products each year by our R&D Dpartment.
6. Perfect testing system ensure each product is qualified.
7. Want know more of us? Waiting for your inquiry.
How to Order?
1. Please let us know what kind of model, color, battery capacity you need.
2. Proforma invoice (PI) will be sent to you.
3. Please check and confirm the PI.
4. Once we confirmed the order, please pay it soon.
5. After full payment, all goods will be sent to you in 3-5 days as usual.
6. OEM/ODM is welcomed. Free OEM for more than 500 sets orders.
1. Products are shipped via UPS / DHL / EMS / HK EMS / FedEx / TNT and so on expresses (door to door)
2. We Provide Drop shipping Service.
3.5 days delivery upon receiving payment if the qty is lower than 1000PCS and it is not customized product
4. In order to ensure you receive your order tax free upon import, we declare lower value.
5. Shipping via EMS. UPS. FedEx and TNT express usually takes 3~7days dependent on the destination country.
1. We accept Western Union and T/T, Paypal (extra 4% commission charge)
2.30% deposit and 70% before shipping
3. No payment collection. We only can deliver goods after getting full payment

We provide 1 year warranty. If the item is defective, please notify us within 3 days of delivery. All item please be returned in their original condition in order to qualify for a refund or exchange of goods Welcome to inquire, negotiate, we will be happy to provide you with the best quality products and personalized service!
Electrical features Rated current In A 1, 2, 6, 10, 16, 20, 25, 32, 40, 50, 63
Poles P 1,2,3,4
Rated voltage Ue V 230/400
Insulation voltage Ui V 500
Rated frequency Hz 50/60
Rated breaking capacity A 3000, 4500
Rated impulse withstand voltage (1.2/50) Uimp V 4000
Dielectric test voltage at ind. Freq. for 1 min Kv 2
Pollution degree   2
Thermo-magnetic release characteristic   B, C, D
Mechanical features Electrical life t 4000
Mechanical life t 10000
Protection degree   IP20
Reference temperature for setting of thermal element °C 30
Ambient temperature (with daily average≤35°C) °C -5~+40 (special application please refer to temperature compensation correction)
Storage temperature °C -25~+70
Installation Terminal connection type   Cable / Pin-type busbar
Terminal size top/bottom for cable  mm2 25
AWG  18-3
Terminal size top/bottom for busbar mm2 25
AWG  18-3
Tightening torque N*m 2
In-Ibs. 18
Mounting   On DIN rail EN 60715(35mm) by means of fast clip device
Connection   from top or bottom

Type Test current Tripping time Type Test current Tripping time
1.13In t≤1h(In≤63A) B 3In t≤0.1s
1.13In t≤2h(In>63A) C 5In t≤0.1s
B,C,D 1.45In t<1h(In≤63A) D 10In t≤0.1s
1.45In t<2h(In > 63A)   B 5In t<0.1s
B,C,D 2.55In 1s<t<60s(In≤32A) C 10In t<0.1s
2.55In 1s<t32A) D 20In t<0.1s

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