RCCB is a switching device that can detect residual current (i.e., leakage current) in a circuit and automatically cut off the circuit. Residual current refers to the situation where the currents flowing into and out of a circuit are not equal. The difference may form a circuit through the human body or other unexpected paths, leading to electric shock accidents or fire hazards.
Working principle: RCCB operates based on the principle of electromagnetic induction. When the circuit is operating normally, the inflow and outflow currents are equal, and the magnetic fields generated by electromagnetic induction cancel each other out, keeping the RCCB in a closed state. Once a leakage occurs, the residual current will cause an imbalance in the magnetic field generated by electromagnetic induction, triggering the tripping mechanism to act and quickly cut off the circuit, thereby protecting personal safety and equipment from damage.
Current Release Character Diagram
| Test current(A) |
Rated current(A) |
Requested time |
Result |
Start station |
Remark |
| 1.13In |
all |
t>=1h |
Don't trip |
Cool |
|
| 1.45In |
All |
T<1h |
trip |
heat |
Current ascends the requested value stably in 5s |
| 2.55In |
In<=32A |
1s<t<60s |
trip |
Cool |
Auxiliary switch closed, power is on |
| 2.55In |
In>32A |
1s<t<120s |
trip |
Cool |
Auxiliary switch closed, power is on |
| 3In(Bmode) |
All |
t>=0.1s |
Don't trip |
Cool |
Auxiliary switch closed, power is on |
| 5In(Bmode) |
All |
T<0.1s |
trip |
Cool |
Auxiliary switch closed, power is on |
| 5In(Cmode) |
All |
t>=0.1s |
Don't trip |
Cool |
Auxiliary switch closed, power is on |
| 10In(Cmode) |
All |
T<0.1s |
trip |
Cool |
Auxiliary switch closed, power is on |
| 10(Dmode) |
All |
t>=0.1s |
Don't trip |
Cool |
Auxiliary switch closed, power is on |
| 14In(Dmode) |
All |
T<0.1s |
trip |
Cool |
Auxiliary switch closed, power is on |
Tengtai Company has strong technical production capabilities and possesses multiple production lines with leading domestic technical levels, as well as surge protectors, lightning current impulse transmitters, transformer calibrators, pressure gauges, PD instruments, etc. Through cooperation with top foreign design institutes, the company introduces world-class equipment, supplemented by imported high-quality PC materials and exquisite manufacturing industry, to create products that are close to users and lead the market. With its strong technical research and development capabilities and humanized management concepts, the company is committed to providing users with high-quality products. The company strictly implements the ISO9001:2000 international quality management system standard and strives to enhance the brand awareness and reputation of high-quality products and services. In the spirit of serving the whole society and consumers, we will continue to provide customers with more perfect products and more considerate services. We warmly welcome people from all walks of life to visit and patronize us. We firmly believe that through unremitting efforts and persistent pursuit, we will continue to make progress with the times.
1.Do you have any requirements for the sales target completion volume of the dealers?
Q: We welcome distributors from all countries to cooperate with us. Sales volume is an important assessment criterion. According to the different requirements of various countries, new and old customers are welcome to consult!
2. Can I deliver the goods from other suppliers to your factory? And then load them together?
Q: Sure, we are very willing to help customers obtain the products quickly
3. May I only purchase some spare parts from you?
Sure, we can sell everything from spare parts to finished products.
4. Will you attend the trade fair to showcase your products?
Q: Yes, we participate in 3 to 4 international exhibitions every year, such as the Canton Fair, the Dubai Electricity Exhibition in the Middle East, the Asia Electricity Exhibition, etc. A series of different exhibitions. We look forward to seeing each other at the exhibitions!
5. How long will it take you to provide us with the design plan?
Q: We have a professional design team. Our models and accessories are all independently developed and produced. We can provide you with ODM services. The general term is 45 to 50 days.
6. How many years has your company been manufacturing this kind of equipment?
Q: Our company has a history of 12 years. We have been specializing in the production of a series of electrical products such as surge protectors, fuses and circuit breakers.
7. What certificates does your device have?
Q: We have established a complete quality management, supply chain and after-sales service system. We constantly introduce the advanced 6S international management concept and have successively passed ISO9001, ISO14001, OHSAS18001, CQC certification, CE certification, TUV certification, CB certification and Rohs certification.
8. Do you have a detailed professional installation manual?
Q:Sure, you can find the installation manual of any product on our website, and it will also be in our product box.
9. Is OEM acceptable?
Q: We can provide OEM and ODM services. We have many different specifications and appearances for customers to choose from.
10. Have you provided samples? Free or paid?
Q: We can offer free samples to customers, but only one piece. However, the shipping cost needs to be borne by the customer.
11. What is your minimum order quantity?
Q: We decide based on the product packaging. Our minimum order quantity is 100 pieces.
12. How long is your delivery time?
Q: Our delivery time is determined based on the purchase volume. Generally, it takes about 3 to 40 days. For 300 pieces or less, it takes 5 days; for 300 to 2,000 pieces, it takes 7 to 15 days; and for 2,000 to 20,000 pieces, it takes 15 to 40 days.
13. Could you design the equipment according to our dimensions?
Q: Of course, we can customize any product according to the customer's requirements. We can provide design plans and solutions.
14. Can your products be installed in cold or hot weather?
Q: The operating environment temperature range of our surge protector is -40ºC to 80ºC. As long as the installation environment you are in does not exceed this range, it can work normally.
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