Products & Solutions

Place of Origin: China
Brand Name: Longsun
Model Number: LTZQ2
Minimum Order Quantity: 1 pc
Delivery Time: 15 working days
Payment Terms: L/C, T/T, Western Union, etc.



(PC Class) Isolated Ddual Power Automatic Transfer Switch


LTZQ2 series PC-class isolated dual-power automatic transfer switch is an automatic transfer switch that integrates switch and logic control, does not need an external controller, and truly realizes mechatronics. It has voltage detection, frequency detection, communication interface, and electrical and mechanical interaction. Lock and other functions can realize automatic, electric remote, and emergency manual control.

The operation is realized by the logic control board using various logic commands to manage the operation and operation of the motor and gearbox. The motor drives the switch spring to store energy, and the acceleration mechanism is released instantaneously to quickly connect and break the circuit or perform circuit conversion. Through the obvious visible state Realize safe isolation, and greatly improve the electrical performance and mechanical performance.

The overall design of the LTZQ2 switch is marble-shaped, compact, and sturdy. It has strong dielectric properties, protection ability, and reliable operation safety.

The switch is suitable for the automatic conversion between the main power supply and the backup power supply of the power supply system or the automatic conversion and safety isolation of two load devices. The switch has a beautiful appearance, novelty, simplicity, small size, and full functions, making it an ideal choice for different occasions.




Standards compliant
●LTZQ2 series automatic transfer switch conforms to series standards:
●IEC 60947-1(1998) /GB/T 4048.1 “General Rules for Low-Voltage Switchgear and Control Equipment”
●IEC 60947-3(1999)/GB 14048.3″Low-voltage switchgear and control equipment, low-voltage switches, isolators, disconnectors, and fuse combinations”
●IEC 60947-6(1999)/GB 14048.11″Low-voltage switchgear and control equipment multifunctional electrical appliances No.1Article: Automatic Transfer Switching Appliances”



Performance and Features

●Adopt double-row composite contacts, horizontal pull mechanism, micro-motor pre-storage energy, and micro-electronic control technology, basically realize zero flashovers (no arc extinguishing cover);

●Reliable mechanical interlock and electrical interlock are adopted, and the actuator adopts an independent load isolation switch, which is safe and reliable to use;

●Using zero-crossing technology, it can be forced to zero in an emergency (cut off two power supplies at the same time), meeting the needs of fire linkage;

●The switching load isolation switch is driven by a single motor, the switching is reliable and stable, with no noise and small impact force; The drive motor of the manipulator only passes current at the moment when the load isolation switch is switched, and there is no need to provide a working current for steady-state work, which saves significant energy;

●Executive load isolating switch is equipped with a mechanical interlocking device to ensure reliable operation of common and standby power sources without interfering with each other;

●With obvious on-off position indication, padlock, and other functions, it can reliably realize the isolation between power supply and load;

●Good safety performance, high degree of automation, high reliability, the service life of more than 8000 times;

●Mechanical and electrical integration design, accurate, flexible, and smooth switching, adopts international advanced logic control technology, strong anti-interference ability, no external interference;

●There are three kinds of stable work (1-O-Ⅱ) with the main power on and the backup power off; the main power off and the backup power on; both the main and backup power off;

●Easy to install, the control circuit is connected by plug-in terminals;

●Four operating functions: emergency manual operation, electric remote control operation, emergency disconnection operation in an automatic control state, and automatic control operation.



The main technical parameters


Rated heating current 20A 40A 63A 80A 100A 125A 160A 250A 400A 630A
Rated insulation voltage (Ui) 750V
Rated impulse withstand voltage (uimp) 8kV
Rated working voltage (Ue) AC400V
Rated operating current Ie AC-31A 20 40 63 80 100 125 160 250 400 630
AC-35A 20 40 63 80 100 125 160 250 400 630
AC-33A 20 40 63 80 100 125 160 250 400 630
Rated making capacity 10 ILe
Rated breaking capacity 8 ILe
Rated limited short-circuit current 100kA 100kA
Rated short-time withstand current 7kA 9kA 26kA
Conversion time|-Ⅱ or Ⅱ-1 0.45s
Control supply voltage DC24V,48V,100V,AC220V
Motor energy consumption
Rated control voltage Start up 300W 325W
Normal 55W 62W
Weight (kg) level 4 7.0 7.2 7.2 7.2 7.5 7.5 8.8 9 17


Rated heating current 800A 1000A 1250A 1600A 2000A 2500A 3200A
Rated insulation voltage (Ui) 1000V
Rated impulse withstand voltage (uimp) 12kV
Rated working voltage (Ue) AC400V
Rated operating current Ie AC-31A 800 1000 1250 1600 2000 2500 3200
AC-35A 800 1000 1250 1600 2000 2500 3200
AC-33A 800 1000 1250 1600 2000 2500 3200
Rated making capacity 10 ILe
Rated breaking capacity 8 ile
Rated limited short-circuit current 100kA 100kA 120kA 80kA
Rated short-time withstand current 26kA 50kA 55kA
Conversion time|-Ⅱ or Ⅱ-1 1.2s 2.4s
Control supply voltage DC24V,48V,100V,AC220V
Motor energy consumption
Rated control voltage Start up 400W 400W 600W
Normal 90W 98W 120W
Weight (kg) level 4 32 36 40 43 95 98 135




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