SKQ1-NBX MCCB Type Built-in Controller Automatic Transfer Switch(ATS)

• 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  

  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.

Question 3: How does the fire protection interface work on the intelligent fire protection ATS?

Answer：

• The controller is equipped with a fire protection interface, which can be connected to a fire alarm system’s DC24V signal (user-selectable control voltage).

• When a fire alarm is triggered, the ATS immediately outputs a control signal to forcibly cut off the relevant circuit, ensuring emergency power shutdown to prevent fire spread.

Question 4: What protection features does the intelligent fire protection ATS offer?

Answer:

1. Dual interlock protection: Mechanical + electrical interlocking to completely prevent simultaneous closure of both power sources.

2. Voltage protection: Real-time monitoring of undervoltage, overvoltage, and phase loss, with automatic switching or shutdown in case of abnormalities.

3. Fault alarm: Audible/visual or LCD indications for power failures, circuit breaker tripping, and other faults.

4. Anti-reclosing: Prevents automatic reclosure after a short circuit or overload on the load side, even if the fault persists.

   
   

Question 5: What operation modes does the intelligent fire protection ATS support?

Answer: Six modes:

• Manual Control: Forced selection of main or standby power supply.

• Auto-Recovery: Automatically switches back to the main power supply once restored.

• Normal Power Supply: Defaults to the main power source.

• Standby Power Supply: Defaults to the backup power source.

• Power-Off Restore: Requires manual confirmation to switch back after main power restoration.

• Auto-Recovery Disallowed: Maintains backup power supply even after main power returns to avoid frequent switching.

  
  

Question 6: Can a standard ATS be upgraded to an intelligent fire protection model?

Answer:

• No direct upgrade is possible, as the intelligent fire protection version requires integrated hardware such as a fire interface and voltage detection modules.

• For fire protection functionality, replacement with an intelligent fire protection ATS is recommended.

  
  

Question 7: Where is the intelligent fire protection ATS typically used?

Answer:

• Fire-critical facilities: Shopping malls, hospitals, data centers, and factories requiring mandatory power cutoff.

• High-reliability power applications: Banks, telecom base stations, and other equipment sensitive to voltage fluctuations.