English
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Ambient air temperature should be not higher than 40℃ and not ower than-5℃.The 24 hours average temperature should not exceed+35℃ .
The relative humidity should not exceed 50%at 40℃. A higher relative humidity is allowed at lower temperature,but the possible condensation caused by temperature variation should be taken into consideration.
The altitude should not be higher than 2000m.
Installation category is IV.
The maximum inclination angle is 23degrees.
Pollutionlevel is Ⅲ
Technical data
SKQ1-125 | SKQ1-225 | SKQ1-400 | SKQ1-630 | ||
Usage category | AC-33iB | ||||
Rated currentle | 63A.80A.100A.125A | 140A.160A.200A. | 400A | 400A、500A,630A | |
Rated working volage Ue | AC400V | ||||
Rated insulafion voltage Ui | 690V | ||||
Rated short-time withstand voltage lcw | 10kA | 10kA | 12.6kA | 12.6KA | |
Rated short-circuit making capacity lcm | 17kA | 17kA | 25.2kA | 25.2kA | |
Sevice life | Mechanical | 10000 | 5000 | ||
Electrical | 5000 | 2500 | |||
Pole numbers | 3P、4P | ||||
Testing operating cycles (seconds/time） | 5s | ||||
Transfer time | 1~99s(delay) | ||||
Outline drawing and mounting dimensions
Precaution
1.the plug of the charged plug controller is forbidden, otherwise the electric shock or the product will be damaged.
2.non professional personnel are prohibited from operation or maintenance, otherwise the danger of electric shock or damage to the product will be caused.
3.load capacity shall not exceed the rated capacity of the switch, otherwise the switch will be removed or burned.
4.The zero line (N)should not be connected to the phase line. The input of two circuit breakers must be the same. When the tree-level circuit breaker is used, connect the common line power (NN)and backup neutral line (RN)1 foot(N), otherwise it will lead to switch damage, grounding should be reliable, to ensure safety.
5.Do not install directly in outdoor work, otherwise it will shorten the service life or cause adverse reactions.
6.Do not install directly on the place with conductive dust or wire intruding, otherwise it will cause damage to product or cause mechanical failure.
FAQ
Question 1: What are the requirements for the ambient air temperature?
Answer: The ambient air temperature should be not higher than 40℃ and not lower than -5℃, and the 24 hours average temperature should not exceed +35℃.
Question 2: What are the restrictions on relative humidity and altitude according to the given information?
Answer: The relative humidity should not exceed 50% at 40℃, and higher relative humidity is allowed at lower temperatures but with consideration of possible condensation caused by temperature variation. The altitude should not be higher than 2000m.
Question3: What are the important precautions and potential risks to avoid when dealing with this electrical equipment in terms of operation, installation and connection?
Answer: Firstly, never plug or unplug the charged plug controller to avoid electric shock and product damage. Secondly, only professional personnel should operate or maintain it as non-professionals may face electric shock or damage the product. Thirdly, ensure the load capacity does not exceed the switch's rated capacity to prevent the switch from being removed or burned. Fourthly, correctly connect the lines: the zero line should not be connected to the phase line, the input of two circuit breakers must be the same, and when using a three-level circuit breaker, connect the common line power and backup neutral line properly to avoid switch damage, and make sure the grounding is reliable for safety. Fifthly, do not install it directly outdoors as it may shorten its service life or cause adverse reactions. Finally, do not install it in places with conductive dust or wire intrusion to prevent product damage or mechanical failure.
Answer:
CB-grade Molded Case ATS uses a robust molded case circuit breaker (MCCB) mechanism, designed for higher current ratings (typically 100A and above) and better short-circuit withstand capability.
MCB-type ATS employs miniature circuit breakers (MCBs), suitable for lower current applications (usually below 100A) and compact installations.
Answer:
CB-grade ATS has a significantly higher breaking capacity (e.g., 10kA–100kA) due to its MCCB-based design, which includes arc extinguishing chambers and durable contacts.
MCB-type ATS has a lower breaking capacity (typically 6kA–15kA), as MCBs are designed for residential/small commercial loads.
Answer:
CB-grade ATS is used for:
Industrial plants, data centers, and large commercial buildings.
Critical circuits requiring high fault tolerance (e.g., motors, HVAC systems).
MCB-type ATS is suited for:
Residential/small offices, lighting circuits, and low-power distribution panels.
