Wenzhou Kinee Electrical Co., Ltd. is one of the most reliable manufacturers and suppliers of AC Types Of Circuit Breaker in China. We warmly welcome you to wholesale AC Types Of Circuit Breaker for sale here from our factory. All customized products are with high quality and competitive price.
Product Introduction
AC types of air circuit breakers,This series of products is suitable for AC 50Hz circuits with a rated voltage of 230/400V and a rated current of 63A and below, serving as overload and short-circuit protection for lines, lighting, and power equipment. It can also be used for infrequent switching of lines and equipment under normal conditions.
This series of miniature circuit breakers features high current-limiting capability and high reliability, and is mainly used in power distribution systems such as main unit cabinets, power supply cabinets, distribution cabinets, outdoor cabinets/rooms, surge protection boxes, and high-end real estate projects in the telecommunications industry.
Technical Parameters
| Product Model | KNS3-63F6 |
| Meets standards | IEC60898-1 |
| Rated current (A) | 1A,2A,3A;4A,6A,10A,16A,20A,25A,32A,40A,50A,63A |
| Extreme number | 1P,2P,3P,4P |
| Mechanical life (times) | 20000 |
| Electrical life (times) | 10000 |
| Reference temperature (°C) | 30 |
| Operating ambient temperature (°C) | -30~+75 |
| Maximum cross-sectional area of connecting wire (mm²) | 25 |
Breaking Capacity
| Breaking capacity | |
| Product Model | KNS3-63F6 |
| Rated voltage | AC400V |
| Trip unit type | Type C (5-12) In, Type D (10-20) In |
| Rated short-circuit breaking capacity | 6000A |
| Power factor cosΦ | 0.65～0.7 |
Common Faults and Troubleshooting
Cause of the fault | Cause Analysis | Elimination methods |
Cannot be closed | Is there a short circuit at the load end? | Troubleshooting |
Operating mechanism malfunction | Replacement product | |
The rated current of the circuit breaker does not match the load current. | Change product specifications | |
Temperature rise is higher than average | The wiring screw is not tightened or is loose. | Tighten the wiring screws |
The selected conductor cross-sectional area is too small. | Replace wire specifications | |
The circuit breaker was not tripped during a short circuit. | The selected circuit breaker is not compatible with the operating conditions of the load. | Change product specifications |
No power | The wire strip is too short | Re-stripping the wire |
The wiring screws are not tightened or are loose. | Tighten the wiring screws |
Features
AC types of air circuit breakers,This series of circuit breakers consists of a plastic housing, overcurrent trip unit, operating mechanism, contacts, and arc extinguishing system. The housing is made of high-strength, high-flame-retardant plastic. Multi-pole circuit breakers are assembled from multiple single poles. The trip units are connected by a linkage rod, and the handles are integrated with a linkage cover, ensuring consistency in the switching action of each stage.
Appearance and Size
Questions and Answers
Q: When can I expect to receive a quote and detailed information after submitting an inquiry?
A: A reply will be sent within 24 hours.
Q: What makes you different from other suppliers?
A: We have a full range of electrical products and can also customize products to meet your specific needs.
Q: Do you provide samples? Are they free or extra?
A: Yes, we can provide samples free of charge, but we will not cover the shipping costs.
Q: Can I get a sample for testing before placing an order?
A: Of course!
Q: How's the delivery? I really need them urgently!
A: Samples require 5-7 days. Bulk orders require 12-15 days.
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