Products & Solutions

Place of Origin: China
Brand Name: Longsun
Model Number: DZ47-63
Minimum Order Quantity: 1 pc
Delivery Time: 15 working days
Payment Terms: L/C, T/T, Western Union, etc.



Mini Daul Power Changeover Automatic Transfer Switching


LTZQ3-63 dual power supply automatic transfer switching appliance is suitable for dual power supply systems with AC 50Hz, rated working voltage 400V, and rated working current below 63A. Selective switching between the two power supplies is possible as required.


The product has the functions of overload and short circuit, and also has the function of outputting closing signal. Especially suitable for lighting lines in office buildings, shopping malls, banks, high-rise buildings, etc.


The product complies with IEC60947-6-1 and GB/T14048.11 standards.






Strong anti-interference ability and high precision;

Complete protection functions, with overload and short circuit protection;

Small size, high breaking, short arcing, compact structure, beautiful appearance;

Noiseless operation, energy saving and consumption reduction, easy installation and operation, and stable performance.

Normal working conditions

●Ambient air temperature: the upper limit does not exceed +40°C, the lower limit does not exceed -5°C, and the average value of 24 hours does not exceed +35°C;

●Installation site: the altitude does not exceed 2000m;

●Atmospheric conditions: the relative humidity of the atmosphere attacks the ambient air temperature +40°C does not exceed 50%, at lower temperatures, there can be higher temperatures, and the monthly average minimum temperature of the wettest month is +25°C, the average maximum relative humidity is 90%. And taking into account the condensation that occurs on the surface of the product due to humidity changes, special measures should be taken;

●Pollution level: level Ⅲ;

●Installation environment: no strong vibration and shock at the operating site, no harmful gases that corrode or damage insulation, no serious dust, no conductive particles and explosive hazardous substances, no strong electromagnetic interference;

●Usage category: AC-33iB.




Overall installation dimensions and wiring diagram (mm)


Model Number of poles (P) Dimensions (mm) Installation size (mm)
W L h W1 L1
TZ Q 3-63A 2 150 132 122 135 120
TZ Q 3-63A 3 185 132 122 165 120
TZ Q 3-63A 4 220 132 122 200 120



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