L7 Mini Circuit Breaker MCB

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Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 100 Pieces pc

Supply Capability:: 10000 Pieces per Month pc/month

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Applications:

L7 has protective function of overload, and is used in lighting distribution system in industry, commerce, dwelling and protect fractional electric motors. They also have many merits of high protective grade (up to IP20), high breaking capacity, reliable sensitive action, convenient multi-pole assembling and long life. They are mainly adapted to the circuit of AC 50Hz, 230V in single-pole, 400V in double/three/four-pole for protecting overload and short circuit. Meanwhile, they are also used in turning on or off the electric apparatus and lighting circuit under the normal conditions.

Features:

1) Conforms to standards of electrical EN60898 (IEC898), GB10963-99

2) Rated current: 230V/400V, 50/60Hz

3) Rated breaking capacity: 10kA IEC898 (0.5 - 63A), 15kA IEC947-2 (0.5 - 63A)

4) Short circuit breaking capacity of DC: max. 48V (KL7, 10kA) single-pole, max. 250V (KL7-DC, 6kA) single-pole

5) Performance: C, D characteristic curve

6) Max. fuse that can be connected to: 100AgL (>10kA)

7) Selective grade: 3

8) Working ambient temperature: -5 - 40°C

9) Enclosed protective class: P40 (under mounting)

10) Life:

a) Electrical: not less of 8,000 times switching operation

b) Mechanical: not less of 20,000 times switching operation

Main technical parameters

Type	L7
Number of poles	1P 2P 3P 4P
Rated Current(In)	1-63A
Rated Voltage(Un)	AC 230(240)/400(415)V
Rated frequency	50(60)Hz
Curve	B C D
Short-circuit breaking capacity(Icn)	10000A
Magnetic releases operate	B curve: between 3 and 5 In/C curve: between 5 and 10 In/D curve: between 10 and 14 In
Endurance	≥ 4000
Terminal protection	IP20

Q: What is the principle of choosing a fuse?: Otherwise, reliable short-circuit protection can not be obtained.

Q: What is the best material for electric brake fuses?: Fuse material is mainly made of low-melting alloy such as aluminum antimony alloy. Is to achieve the purpose of lower melting points added.

Q: Can the fuse be connected to the zero line?: The possible cause of the voltage below 220V is that the line you are using is the end!

Q: Why does the fuse fail when the electric shock is electric: The resistance of the human body as shown in the table below, when the body when the electric shock,

Q: Where can the fuse be used?: their own fuse cut off the current, which play a protective circuit safe operation

Q: What parts are the fuses divided: The current is too large, the melt melts due to overheating, thus cutting off the circuit

Q: What is the fuse often used?: Fuses must be easy to melt the wire, in order to fuse when the current is large, play a protective role, so usually lead-antimony alloy wire.

Q: When replacing the melt, it is required to: Before installing the new melt, find out the cause of the melt fuse, not determine the cause of the fuse, do not replace the melt test.

Q: What are the characteristics of the fuse?: The rated current of the melt is selected according to the load current of the protected equipment

Q: What happens to the fuse's melting point?: In the event of a short circuit more easily blown, thus stopping the power supply

We are a professional manufacturer engaged in the research, development, production, sale and service of Low voltage electrical products, such as AC contactors, MCBs, MCCBs and RCCBs. Selling well in all cities and provinces around China, our products are also exported to clients in such countries and regions as the Middle East, Southeast Asia, and so on. We also welcome OEM and ODM orders

1. Manufacturer Overview

Location	Zhejiang,China
Year Established	2010
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Nearest Port	SHGNHAI
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Language Spoken:	ENGLISH,CHINESE
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