L7 Mini Circuit Breaker MCB
- Ref Price:
-
- 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 should you pay attention to when using high voltage fuses?
- check the porcelain insulation part of the damage and discharge traces;
- Q: What is the principle of choosing a fuse?
- he limit breaking current of the fuse should be greater than or equal to the effective value of the short-circuit impulse current that may occur in the protection circuit
- Q: What is a tube fuse
- If the tube is vacuumed, it is called a vacuum fuse. If the tube filled with SF6 gas, known as the SF6 fuse, the purpose is to improve the arc performance. As the quartz sand, vacuum and SF6 gas have good insulation properties, so this fuse is not only suitable for low pressure is also applicable to high pressure.
- Q: What is the fuse of the fuse?
- The rated current of the melting tube is the current value determined by the permissible temperature rise of the long-term operation of the melt pipe.
- Q: How do the use of circuit breakers in the end?
- the current is too large when the expansion coefficient of the first expansion, play a role in cutting off the powe
- Q: Circuit breaker and fuse in the role of what in common
- And a combination of overheat relays and the like. Fuses are also known as fuses, which are installed in the circuit to ensure the safe operation of the circuit electrical components
- Q: Selection of melt rated current
- under the action of short-circuit current and allow overload current ,
- Q: Why the fuse resistance is large
- If the circuit is properly placed in the fuse, then the fuse will rise in the current to a certain height and heat, when the fuse itself cut off the current, so as to protect the safe operation of the circuit.
- Q: Fuses are generally not overloaded.
- Our fuse in the actual work is used for short circuit protection.
- Q: Fuses can be divided into high-voltage fuses and low-voltage fuses.
- the protection of the voltage transformer fuse, the protection of the power capacitor fuses, protect the semiconductor components of the fuse,
1. Manufacturer Overview
| Location | Zhejiang,China |
| Year Established | 2010 |
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3. Manufacturer Capability
| a) Trade Capacity | |
| Nearest Port | SHGNHAI |
| Export Percentage | |
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| Language Spoken: | ENGLISH,CHINESE |
| b) Factory Information | |
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Send your message to us
L7 Mini Circuit Breaker MCB
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT or LC
- Min Order Qty:
- 100 Pieces pc
- Supply Capability:
- 10000 Pieces per Month pc/month
OKorder Service Pledge
OKorder Financial Service
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