[email protected]
Home > Automatic Transfer Switch (ATS) > China SJKQ2 Dual Power Automatic Transfer Switch Factories, Companies
China SJKQ2 Dual Power Automatic Transfer Switch Factories, Companies
China SJKQ2 Dual Power Automatic Transfer Switch Factories, Companies
China SJKQ2 Dual Power Automatic Transfer Switch Factories, Companies
1 / 3
China SJKQ2 Dual Power Automatic Transfer Switch Factories, Companies
China SJKQ2 Dual Power Automatic Transfer Switch Factories, Companies
China SJKQ2 Dual Power Automatic Transfer Switch Factories, Companies

China SJKQ2 Dual Power Automatic Transfer Switch Factories, Companies

The SJKQ2 ATS Automatic Transfer Switch delivers robust power transfer solutions for critical systems, supporting 100A-3200A loads at AC 400V with 500-800V insulation and 6-8kV impulse withstand. Engineered for harsh environments, this ATS operates at altitudes ≤2000m and temperatures -5°C to +40°C, featuring <3s switching and AC-33iB performance. With short-time withstand currents up to 16kA, it ensures reliability in Pollution Degree 3/Category Ⅲ installations. The SJKQ2 Automatic Transfer Switch prevents power interruptions with seamless source transition, making it ideal for industrial and commercial backup systems requiring fail-safe operation.

Send Inquiry

Product Description

Type Designation
Type Designation
1Manufacturer Code
2Auto-Transfer Function
3Derivative Code: (): NCCB; W Compact Type; W1: Economy Type; W2: Smart Type (Undervoltage/Phase-Loss/Off/Fire Protection)
4Function Code: R-Grid-to-Grid (Optional); F-Grid-to-Generator; M-Terminal Type (Optional); Y-Integrated Smart Type (Off/Fire Protection/Undervoltage); N-Split Smart Type (Off/Fire Protection/Undervoltage)
5Frame Size Current
6Number of Poles
7Rated Current (In)
Technical Parameters
Parameter Specifications
Rated current100A160A250A630A1600A3200A
Rated voltageAC 400V
Rated Insulation voltage (Ui)500V800V
Rated Impulse withstand voltage (Uimp)6KV8KV
Rated Short-time withstand current (Icw)5KA10KA16KA
Switch time<3s5s
Rated control voltageAC 230V
Ambient TemperatureThe upper limit is +40°C, average not exceeding +35°C within 24 hours; lower limit is -5°C.
AltitudeThe altitude of the installation site does not exceed 2000m.
Installation EnvironmentNo explosive atmosphere. No rain intrusion environment.
Power Supply Voltage Deviation<85% Ue
Using CategoryAC-33iB
Installation CategoryII
Pollution Degree3
Product Display
Display 1 Display 2 Display 3
Main Circuit Wiring Diagram & External Power ON Indicator
Wiring Diagram
  • 1. Normal Neutral Line
  • 2. Normal Source ON Indicator
  • 3. Alternate Neutral Line
  • 4. Alternate Source ON Indicator
Terminal Diagram

If fire protection and power generation functions are required, please contact for customization. The wiring diagram is as follows:

Terminal Diagram
Outline and Installation Dimensions
Installation Dimensions
Model DimensionsWW1LL1H
SJKQ2-100/3P290253205186120
SJKQ2-100/4P320282205186120
SJKQ2-225/3P330296215195140
SJKQ2-225/4P365333215195140
SJKQ2-400/3P465410310285190
SJKQ2-400/4P508455310285190
SJKQ2-630/3P528478318295195
SJKQ2-630/4P588535318295195
SJKQ2-800/3P608556334310190
SJKQ2-800/4P678626334310190
SJKQ2-1250/4P695642391365288
SJKQ2-1600/4P695642391365288
Frequently Asked Questions
What is the switching time of the SJKQ2 ATS?
The switching time depends on the model. For smaller frames (up to 250A), it is less than 3 seconds. For larger frames (630A and above), the switching time is approximately 5 seconds.
Can this Automatic Transfer Switch be used at high altitudes?
Yes, the installation site altitude can be up to 2000 meters without affecting standard performance.
What are the environmental requirements for installation?
The unit should be installed in an environment free from explosive atmospheres and protected from rain intrusion. The temperature should be between -5°C and +40°C.
Does the SJKQ2 support fire protection functions?
Yes, specific "Smart Type" versions (W2, Y, N codes) include fire protection, undervoltage, and phase-loss protection. Customization is available for fire protection needs.
What is the rated voltage for the control circuit?
The rated control voltage for the SJKQ2 series is AC 230V, with a rated operational voltage of AC 400V.

Related Products

Wholesale SJKQ5 ATS Dual Power Automatic Transfer Switch Suppliers, Supplier

Wholesale SJKQ5 ATS Dual Power Automatic Transfer Switch Suppliers, Supplier
ODM SJKQ2Z ATS Switch Dual Power For LV Power Factory, Companies

ODM SJKQ2Z ATS Switch Dual Power For LV Power Factory, Companies
China SJKQ2 Dual Power Automatic Transfer Switch Factories, Companies

China SJKQ2 Dual Power Automatic Transfer Switch Factories, Companies
Wholesale SJKQ1 Manual/Automatic Dual-Use ATS Automatic Transfer Switch Suppliers, Factory

Wholesale SJKQ1 Manual/Automatic Dual-Use ATS Automatic Transfer Switch Suppliers, Factory
OEM SJKM1L Earth Leakage Circuit Breaker ELCB for Industrial Safety Factories, Companies

OEM SJKM1L Earth Leakage Circuit Breaker ELCB for Industrial Safety Factories, Companies
High-Quality HD11F Single Throw Anti-Error Knife Switch Suppliers, Manufacturers

High-Quality HD11F Single Throw Anti-Error Knife Switch Suppliers, Manufacturers
Wholesale SJKM1E Molded Case Circuit Breaker ECB Factories, Factory

Wholesale SJKM1E Molded Case Circuit Breaker ECB Factories, Factory
Wholesale HS13BX Double Throw Rotary Type Knife Disconnect Switch Suppliers, Companies

Wholesale HS13BX Double Throw Rotary Type Knife Disconnect Switch Suppliers, Companies
Wholesale MS132 Low Voltage Motor Protection Circuit Breaker Suppliers, Companies

Wholesale MS132 Low Voltage Motor Protection Circuit Breaker Suppliers, Companies
ODM A9~300 Series AC Contactors 50/60Hz 380V Manufacturers, Factories

ODM A9~300 Series AC Contactors 50/60Hz 380V Manufacturers, Factories