Korlen 63A 500V Miniature Circuit Breaker 2P DC MCB
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.
Frame Class |
63A |
Rated working current |
6,10,16,20,25,32,40,50,63A |
Rated working voltage |
500V |
Place of Origin |
Zhejiang, China |
Color |
White |
Pole number |
1P, 2P, 3P, 4P |
Making and breaking capacity |
10kA |
Release type |
B, C, D |





Q1: Are you a trading company or a manufacturer?
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?
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?
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?
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 are the current and voltage ratings?
The rated current and voltage of Korlen photovoltaic connectors vary according to the specific model. The rated current of the standard type is 20A-50A (some models can reach 60A), and the rated voltage meets the 1000V-1500V photovoltaic DC voltage range, which is suitable for different photovoltaic power stations.
Q6: How to ensure low contact resistance?
Korlen photovoltaic connector contact is made of high quality copper and silver plated, good electrical conductivity and low resistivity; The manufacturing process strictly controls the processing accuracy of the contact, and professional equipment is used for assembly to ensure tight contact and reduce contact resistance.
Q7: Does it have a leakage protection function?
Yes, Korlen PV connectors is leak-proof. The insulation part is made of high-performance engineering plastics with high insulation resistance; The structure is well sealed to prevent water vapor and dust from entering; There is strict leakage detection in production.
Q8: How is the firmness of the connection guaranteed?
Korlen PV connectors feature a reliable locking design (e.g. double locking); In terms of materials, the shell and connecting parts are made of high-strength, wear-resistant materials; Strict fastness testing in production.
Q9: How to ensure the reliability of the product?
Korlen PV connectors select high-quality suppliers in the procurement of raw materials, the production follows a strict quality management system, each process testing, as well as a variety of reliability tests, and has perfect after-sales service.