Automatic Switching Appliance
Automatic Transfer Switch: ZSEE KU series, suitable for emergency power supply systems with an AC rated working voltage of AC400V or below, rated frequency of 50/60Hz, and rated current of 16A to 630A, for automatic transfer between two power sources to ensure continuous, safe, and reliable operation of critical loads (such as fire protection loads). The product is widely used in hospitals, shopping malls, banks, chemical plants, high-rise buildings, military facilities, fire protection, and other important places where power outages are not allowed.
Standards Compliance
International Standards
IEC 60947-1 “Low-voltage switchgear and controlgear Part 1: General rules”
IEC 60947-6-1 “Low-voltage switchgear and controlgear Multi-function switchgear Automatic transfer switching equipment”
National Standards
GB/T 14048.1 “Low-voltage switchgear and controlgear General rules”
GB/T 14048.11 “Low-voltage switchgear and controlgear Part 6-1: Multi-functional switchgear Transfer switchgear”
Operating Environment and Application
Operating Environment
- Altitude not exceeding 2000 meters;
- Ambient temperature not higher than +40℃ and not lower than -5℃;
- When the temperature is +40℃, the relative humidity does not exceed 50%;
- Special measures should be taken for occasional condensation due to temperature changes;
- No explosive hazardous media, no exposure to rain or snow;
- Pollution level is 3.
Application
AC 50/60Hz, rated working voltage of 400V, rated current from 16A to 630A. Used for infrequent connection and disconnection of circuits. For special requirements, please contact the company.
Electrical Grade
PC grade
ZSEEKU-100
Product Features
- ZSEEKU series products are of PC grade;
- The switch is available in three-pole and four-pole versions;
- Clear on/off position indication function;
- Equipped with an LED indicator light to display the operating position and status of the switch;
- Has a selection function for automatic and manual operation modes, with the automatic/manual switching done through a toggle switch for more convenient operation.
Model Explanation
Selection example: ZSEEKU-100/4 63A
ZSEEKU automatic transfer switchgear, with a rated heating current of 100A, rated working voltage of AC400V, rated current of 63A, 4 poles, grid-to-grid/grid-to-generator system.
Function Type Code
Electrical and Mechanical Performance
Wiring Diagram
Plug-in Terminal Diagram
Dimensions and Installation (Unit: mm)
ZSEEKU-160~630
Product Features
- Adopts double-row composite contacts, transverse mechanism, micro-motor pre-storage energy, and micro-electronic control technology, achieving nearly zero arc;
- Uses zero-position technology to force both power sources to zero (cut off both power sources) in case of emergency, meeting fire protection linkage requirements;
- The load isolation switch switching is driven by a single motor, ensuring reliable and smooth switching, without noise, and with minimal impact;
- The motor driving the operator only consumes current during the instant of load isolation switch switching, no current is required during steady-state operation, resulting in significant energy savings;
- The load isolation switch is equipped with a mechanical interlock device, ensuring reliable operation of both the main and backup power sources without interference;
- Features clear on/off position indication and locking function, reliably achieving isolation between the power supply and load;
- High safety performance, high degree of automation, high reliability, with a service life of over 5000 cycles;
- Electromechanical integration design ensures accurate, flexible, and smooth switch conversion, using advanced international logic control technology, with strong anti-interference capability and no external interference;
- Offers three stable operating modes: main power on, backup power off; main power off, backup power on; both power sources off (I-O-II);
- Easy to install, with plug-in terminals used for control circuits;
- Four operation functions: emergency manual operation, remote electric control operation, emergency disconnection in automatic control mode, automatic control operation.
Model Explanation
Selection example: ZSEEKU-160/4S 125A
ZSEEKU automatic transfer switchgear, with a rated heating current of 160A, rated working voltage of AC400V, rated current of 125A, 4 poles, S-type controller, grid-to-grid system.
Function Type Code
Electrical and Mechanical Performance
Wiring Diagram
Plug-in Terminal Diagram
Dimensions and Installation (Unit: mm)
External Control Panel Dimensions and Split Installation Opening Size (Unit: mm)
- Due to continuous product upgrades and optimizations, all information in this document is subject to the actual product. If there are changes, no further notice will be given. The company and its employees are not liable for any disputes arising from the information in this document that have not been confirmed by our business department.