• L7 Mini Circuit Breaker MCB System 1
L7 Mini Circuit Breaker MCB

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

TypeL7
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:The choice of fuse tube can be based on the following process
pulse (impact current, surge current, starting current and current transient value) on the life of the fuse tube
Q:What is the difference between resistance and resistance fuses
Have the function of resistance, but the resistance fuse is equal to the resistance plus fuse,
Q:Why can not the neutral line fuse
and directly to the end of the load zero line does not require no insurance, at least two knife knife switch can be installed on the zero line insurance.
Q:What are the characteristics of the fuse?
The rated current of the fuse should be larger than the rated current of the melt and be determined with the main electrical appliance
Q:What material is used for the fuse
the bracket part of the fuse melt are generally slender and soft, the role of the bracket is to melt the three parts and become rigid as a whole easy to install,
Q:What is a jet fuse
Solid gas production materials can be used electric anti-white cardboard or plexiglass materials.
Q:Fuse always burn Is the line short circuit yet?
if the use of any of these appliances alone, it will burn insurance, that may be the electrical failure, it was caused by the professional electrical repair division to check the electrical friends
Q:Use a multimeter to check if the fuse is damaged
So the choice of fuse for the protection of lines and equipment, the first choice of the melt must be the size of the specifications, and then according to the melt to select the fuse
Q:Why does the rated current of the fuse be based on the effective value as a standard?
The thermal effect of the conductor depends on the effective value of the current. So it is based on the effective value of the standard.
Q:Where can the fuse be used?
If the circuit is correctly placed in the fuse, then the fuse will rise in the current to a certain height and a certain time
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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Language Spoken: ENGLISH,CHINESE
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