China China SJKQ5 ATS Dual Power Automatic Transfer Switch - 20A-3200A Suppliers & Factory for Reliable Power Solutions Manufacturers, Companies

Introducing the SJKQ5 ATS Dual Power Automatic Transfer Switch, a reliable solution for ensuring an uninterrupted power supply for critical systems in various industrial and commercial applications. Manufactured in China by trusted suppliers, this advanced switch supports load capacities ranging from 20A to 3200A at AC400V, featuring exceptional 500-800V insulation and 6-8kV impulse withstand capabilities, Designed for high-demand environments, the SJKQ5 ATS boasts rapid transfer times between 0.6 to 2.4 seconds, making it ideal for seamless transitions during power outages. Its multiple utilization categories (AC-33A/B/iB/CB) cater to diverse operational needs. With a short-circuit making capacity of up to 67kA and flexible control voltage options (DC24V-110V/AC220V), this transfer switch operates efficiently and reliably, The robust design, characterized by low power consumption (55-600W) and compact weight (3.4-67kg), ensures that the SJKQ5 ATS delivers dependable performance in backup power systems. As a leading factory in China, we are committed to providing high-quality products to meet the demands of our clients across the globe. Elevate your power solutions with the SJKQ5 ATS from our esteemed Chinese suppliers, designed for excellence in every operation

Product Description

Type Designation
SJKQ5 Dual Power Automatic Transfer Switch Type Designation
1 Manufacturer Code
2 PC-Class ATS
3 Conventional Thermal Current (A)
4 3: 3-Pole; 4: 4-Pole
5 Automatic Transfer Switch
6 ( ): B (Standard Type); Main-Backup, Auto-Transfer & Auto-Recovery
Ⅰ: Utility-Utility, Auto-Transfer (Non-Recovery), Mutual Backup, Phase-Loss, Over/Undervoltage Protection
Ⅱ: Utility-Utility, Auto-Transfer & Recovery, Phase-Loss, Over/Undervoltage Protection
Ⅲ: Utility-Generator, Auto-Transfer & Recovery, Phase-Loss, Over/Undervoltage Protection
7 "Y" indicates LCD display

SJKQ5 Basic Model Simplified Diagram:

SJKQ5 Basic Model Simplified Diagram
Technical Parameters
Rated Current (Ith) 20A25A40A60A80A100A125A160A250A400A630A800A1000A1250A1600A2000A2500A3200A
Rated Insulation Voltage (Ui) 500V 800V
Rated Impulse Withstand Voltage (Uimp) 6KV 8KV
Rated Operational Voltage (Ue) AC400V
Rated Operational Current (Ie) AC-33A 2025406080100125160250400630800100012501600200025003200
Utilization Category AC-33B AC-33iB   AC-33CB
Rated Making Capacity 10le
Rated Short-Circuit Making Capacity 8kA 26kA 67kA
Rated Conditional Short-Circuit Current (Is) 50kA 70kA 100kA 120kA
Rated Short-Time Withstand Current (Is) 5kA 12.6kA 32kA
Transfer time Ⅰ - Ⅱ or Ⅱ - Ⅰ 2s 0.6s 0.6s 1.2s 1.8s 2.4s
Control Voltage DC24V, 48V, 110V   AC220V
Motor Power Consumption
Rated Power Startup 300W 325W 355W 400W 440W 600W
Normal Operation 55W 62W 74W 90W 98W 120W
Weight (kg) - Class 4 3.43.43.43.43.43.46.06.07.615.816.836363738.6556167
Product Display
SJKQ5 Dual Power Automatic Transfer Switch Front View
SJKQ5 Dual Power Automatic Transfer Switch Angle View
SJKQ5 Dual Power Automatic Transfer Switch Side Profile
SJKQ5 Dual Power Automatic Transfer Switch Terminal Detail
Outline and Installation Dimensions

Rated Current (16A–1600A) Installation Diagram

Rated Current 16A-1600A Installation Diagram

Rated Current (16A–1600A) Installation Dimensions

Specification Overall Dimension Switch Installation Terminal Wiring
AA1BB1CEG JKLNPRSTU AXYY1
100A/3 26022710610313413411520184783.53014182.5103641.593
100A/4 28024710610313413411522184783.53014182.5103641.593
160A/3 330266135134261208166245.578/1087873620253.5134956141
160A/4 36029813513426120816627878/1087873620253.5134956141
250A/3 36631017013426120816629078/1087875025303.51341160145
250A/4 41636017013426120816634078/1087875025303.51341160145
400A/3 455378.5240230333270166358.518011103.565304052081183193
400A/4 515438.5240230333270166418.518011103.565304052081183193
630A/3 455378.5260230333270160358.518011103.565405052081383194
630A/4 515438.5260230333270160418.518011103.565405052081383194
800A/3 88751331225037032147048922011851206056825013107252
800A/4 100763331225037032147060922011851206056525013107252
1000A/3 88751331225037032147048922011851206056825013107252
1000A/4 100763331225037032147050922011851206056825013107252
1250A/3 88751333825037032147048922011851208056825013107252
1250A/4 100763333825037032147060922011851208056825013107252
1600A/3 887513338250370321470489220118512080691025013108253
1600A/4 1007633338250370321470609220118512080691025013108253

2000A–3200A Dual Input Single Output (2-in-1-out) Installation Diagram

2000A-3200A Dual Input Single Output Installation Diagram
SpecificationAA1BCGJORSTVY1Y2Y3
2000A/4P 108080046054254052361080811030113121113
2500A/4P 108080046054254052361080811530118116118
3200A/4P 108080046054254052361080812030123111123
Frequently Asked Questions
Q What is the SJKQ5 Dual Power Automatic Transfer Switch (ATS)?
The SJKQ5 is a PC-Class Automatic Transfer Switch designed to automatically transfer the electrical load between two power sources — such as utility-to-utility or utility-to-generator — ensuring uninterrupted power supply. It supports 3-pole and 4-pole configurations with rated currents ranging from 20A to 3200A.
Q What are the available operating modes for the SJKQ5 ATS?
The SJKQ5 offers four main operating modes: (B) Standard Type with main-backup auto-transfer and auto-recovery; (Ⅰ) Utility-Utility auto-transfer without recovery with mutual backup and protection; (Ⅱ) Utility-Utility auto-transfer and recovery with phase-loss and over/undervoltage protection; and (Ⅲ) Utility-Generator auto-transfer and recovery with phase-loss and over/undervoltage protection.
Q What control voltage options are supported by the SJKQ5?
The SJKQ5 supports multiple control voltage options including DC 24V, DC 48V, DC 110V, and AC 220V, providing flexibility for integration into various electrical control systems and environments.
Q What is the rated operational voltage and utilization category of the SJKQ5?
The SJKQ5 operates at a rated voltage of AC 400V. Depending on the current rating, it falls under utilization categories AC-33B (for lower current models) and AC-33iB / AC-33CB (for higher current models up to 3200A), meeting international IEC standards for transfer switches.
Q Does the SJKQ5 support an LCD display option?
Yes. The SJKQ5 offers an optional LCD display variant. When the letter "Y" is included in the model designation, it indicates that the unit is equipped with an LCD display for enhanced monitoring and status indication.
Q What is the transfer time between power sources for the SJKQ5?
The transfer time varies by current rating. For smaller models (20A–100A), the transfer time is 2 seconds. Mid-range models (125A–400A) achieve 0.6 seconds, while larger models transition through 1.2s, 1.8s, and up to 2.4 seconds for the highest current ratings (3200A), ensuring reliable and timely switching under various load conditions.

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