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CNC Electric Group Co., Ltd.

Mcb, Vacuum Circuit Breaker, Mini Circuit Breaker manufacturer / supplier in China, offering Hot Product Residual Current Circuit Breaker (YCB7NL), Cjx2 (LC1-D) 4-Phase AC Contactor, Square Standard Output Current Transformer and so on.

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Hot Product Residual Current Circuit Breaker (YCB7NL)

FOB Price: Get Latest Price
Min. Order: 1 Box
Production Capacity: 3000/Day
Transport Package: Export Packing
Payment Terms: L/C, T/T

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Basic Info
  • Model NO.: YCB7NL
  • Operation: Electric Type
  • Arc-extinguishing Medium: Air
  • Structure: MCB
  • Certification: ISO9001-2000, CE, CB, CCC
  • Rated Current (a): 6,10,16,20,25,32,40
  • Dielectric Test Voltage(Kv): 2.0
  • Rated Impulse Withstand Voltage(V): 4000
  • Protection Degree: IP20
  • Mechanical Life: 4000
  • Specification: IEC/EN 60898-1, CE, 3C, CB
  • Breaking Capacity: Low Voltage Circuit Breakers
  • Speed: Normal Type Circuit Breaker
  • Installation: Insert
  • Poles Number: 1p+N,2p,3p,3p+N,4p
  • Rated Voltage (V): 240
  • Rated Frequency(Hz): 50/60
  • Rated Breaking Capacity(a): 6,000
  • Insulation Voltage(V): 500
  • Curve: B,C,D
  • Trademark: CNC
  • Origin: Zhejiang, China
Product Description
Hot product Residual Current Circuit Breaker (YCB7NL)

About CNC

1. China Top 500 Enterprise
2.26 years rich experience in manufacturing electrical products
3. Sales in over 100 countries


YCB7 series circuit breaker is used in lighting distribution system or motor distribution system for protecting overload and short circuit in the system. The product is neoteric in structure, lig ht in weight, reliable and excellen t in performance. Its frame and parts adopt plastics of high fire resistant and shockproof. The product, with long life, is mainly used in AC 50Hz/60Hz single pole 240V or two, three, four poles up to 415V circuit for overload and short circuit protection, as well as for unfrequently switching electric equip ment and lighting circuit in normal case. The products comply with IEC 60898 & GB10963-1999.


1. Protection against overload and short-circuit currents
2. Protection against the effects of sinusoidal alternating earth fault currents
3. Protection against indirect contacts and additional protection against direct
4. Protection against fire hazard caused by insulation faults
5. Used in residential building
6. Classified as follows according to the type of instantaneous release: Type B(3-5)ln, type C(5-10)ln


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.
Type Standard   lEC/EN 61009-1
Electrical features Rated current In A 6,10,16,20,25,32,40
Type (wave form of the earth leakage sensed)   A,AC
Poles P 1P+N
Rated voltage Ue V 240
Insulation voltage Ui V 500
Rated frequency Hz 50/60
Rated breaking capacity Icn A 6,000
Rated impulse withstand voltage (1.2/50) Uimp V 4000
Rated sensitivity IΔn A 0.03,0.1,0.3
Break time under IΔn s ≤0.1
Rated residual making and breaking capacity IΔm A 500
Pollution degree   2
Electrical life t 4000
Mechanical life t 4000
Protection degree   IP20
Storage temperature °C -25~+70
Ambient temperature (with daily average≤35°C) °C -5~+40
Installation Terminal connection type   Cable/U-type bar/Pin-type busbar
Terminal size top / bottom for cable mm² 16
AWG 18-5
Terminal size top / bottom for busbar mm² 16
AWG 18-5
Tightening torque N*m 2
In-Ibs 18
Mounting   On DIN rail EN 60715(35mm)by means of fast clip device
Connection   From top 

Type Test current Tripping Time Type Test current Tripping Time
B,C,D 1.13In t≤1h(In≤63A)      t≤2h(In>63A) B 3In t≤0.1s
C 5In
B,C,D 1.45In t63A) D 10In
B 5In t<0.1s
B,C,D 2.55In 1s<t32A) C 10In
D 20In

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