Korlen Mini Circuit Breaker DC MCB 2p 63A 500V DC Breakers Miniature Circuit Breaker

• Customization: Available
• Breaking Capacity: Low Voltage Circuit Breakers
• Operation: Electric Type
• Model NO.: KNB2-63DC
• Speed: High-Speed Circuit Breaker
• Arc-extinguishing Medium: Air
• Installation: Standard DIN Rail
• Structure: MCB
• Poles Number: 2
• Type: Circuit Breaker
• Function: Overcurrent Protection
• Certification: ISO9001-2000, CE, CB, CCC
• Rated Working Current: 6-63A
• Rated Working Voltage: 500VDC
• Release Type: B,C,D
• Making and Breaking Capacity: 10ka
• Transport Package: Standard Export Carton
• Specification: 42*24*36
• Trademark: Korlen
• Origin: Zhejiang, China
• HS Code: 8536100000
• Production Capacity: 500000PCS
• Package Size: 42.00cm * 24.00cm * 36.00cm
• Package Gross Weight: 26.000kg

Product Description

Factory Sales 6kA 6A-63A Mini Circuit Breaker DC Breakers

Product Description

Miniature circuit breakers, also known as air switches (Miniature Circuit Breaker, MCB), are mainly used to protect circuits from overloading and short circuits, and can also be used as infrequently operated switches for lines. They are typically used in residential, commercial and industrial environments, and are suitable for AC 50/60Hz rated voltages of 230/400V and rated currents up to 63A.

Core advantages of the miniature circuit breaker (MCB):
Precise protection: 

1. Dual protection against overloading and short circuits, automatically trips in case of abnormal current, ensuring line safety.

2. With a breaking capacity of up to 4.5kA - 10kA (optional), it can handle sudden current surges.

Flexible adaptation:

1. Available in 1P/2P/3P specifications, suitable for household lighting, sockets, or industrial equipment.

2. The rated current can be freely selected from 6A to 63A, meeting different load requirements.

Efficient and convenient:

1. Modular design, quick installation with a rail in just 1 second, no need to power off for replacement.

2. Transparent window design, clear status display, making fault diagnosis more convenient.

Product Specification

Frame class	63A
Rated working voltage	500V
Rated working current	6,10,16,20,25,32,40,50,63A
Making and breaking capacity	10kA
Release type	B,C,D
Poles	1,2,3,4P

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FAQ

Q1: Are you a trading company or a manufacturer?
A: We are Integration of industry and trade, our company has a history of 40 years. We have been specializing in the production of a series of photovoltaic electrical products, such as circuit breaker, pv combiner boxes, pv connector, surge protector, pv fuses, pv tool accessories and etc.

Q2: If OEM is acceptable?
A: We can provide OEM and ODM services. We have many different specifications and appearances for customers to choose.

Q3: Do you provide sample? Free or charge?
A: We can provide free samples to customers, but only one piece, but customers need to bear the freight. For some special products, we also offer free samples. Considering their particularity, we usually refund the sample fees to customers after they place formal orders.

Q4: How long is your delivery time?
A: Our delivery time is determined according to the purchase quantity. Generally, it is about 3-40 days, less than 300 pieces within 5 days, 300-2000 pieces within 7-15 days, 2000-20000 only within 15-40 days.

Q5: What circuit faults are protected against?
A: Protect overload, short circuit, some models can protect undervoltage failure. When the current exceeds the rated value, the circuit will be automatically cut off for a long time; Short circuit when the current instantaneous maximum will be disconnected; Under voltage (if supported) also operates when the voltage is below the normal range.

Q6: How is overload protection implemented?
A: Internal thermal trip device. When the overload current heats up the heating element, according to Joule's law, the heat reaches a certain degree, and the bimetal plate bends and deforms due to the difference in thermal expansion coefficient to trigger the circuit breaker action.

Q7: What are the specifications of rated current and rated voltage?
A: Rated current from a few amps to several hundred amps, such as 6A for small power circuits, 200A for large equipment, etc. The rated voltage is 220V (home and small business), 380V (three-phase power and industrial), etc., depending on the load and power supply voltage.

Q8: What's the breaking capacity? What's the point?
A: Breaking capacity is the maximum short-circuit current value that can safely cut off a circuit. For example, the circuit breaker with 10kA breaking capacity can reliably cut off the circuit when the short circuit current does not exceed 10kA, and the short circuit current may not be cut off when the breaking capacity is low, causing danger.

Q9: How to ensure quality?
A: Guaranteed by raw materials and production process. In terms of raw materials, high purity copper material for conduction and good insulating material performance; The production follows strict process standards, each process has quality testing, and the finished product carries out a number of performance tests.

Q10: How long is the service life?
A: It is affected by many factors. Under normal use and ideal environment, the mechanical life can reach thousands to tens of thousands of times, and the electrical life can reach 10-15 years. Overload, short circuit or harsh environment will shorten the life.

Q11: Is it easy to install? Do you need special tools?
A: Relatively easy to install. Many standard installation methods are used, such as guide rail installation without special tools, screw fixing only common tools, and installation should be operated according to specifications.

Q12: How to do it correctly?
A: Switch ON the circuit normally and turn the operation handle to "ON"; Switch OFF circuit to "OFF". After the automatic trip, first switch to "OFF" and then switch to "ON" to restore power supply.

Q13: Is it compatible with other brands of electrical equipment?
A: Generally, the voltage and current parameters match and comply with electrical specifications to work normally, but special scenarios or complex systems may require further evaluation.