Electrical protectors

Automatic transfer switch 4P 125 A 3-phase APV

Manufacturer: APV

INDEX: APZ-125.4

Product number: APZ-125.4
Product information "Automatic transfer switch 4P 125 A 3-phase APV"

Three-phase automatic APV transfer switch for photovoltaic installations is a reliable solution that ensures power continuity in the event of a failure of the main power source. The device automatically and instantly switches the system to backup power, and returns to the main source once the power is restored.

Thanks to the use of flame-retardant materials and solid insulation, the switch provides high safety as well as resistance to external conditions and temperature. Built-in silver contacts ensure excellent conductivity and long service life of the device.

Easy operation, the ability to work in automatic or manual mode, and a readiness signal function make the switch ideal for both residential and industrial PV systems.

Key product features:

  • Housing made of flame-retardant PC plastic, resistant to high temperatures and providing good insulation
  • Silver contacts improve conductivity and extend the lifespan of the switch
  • Instant response to power failure – switching within milliseconds
  • Can operate in automatic or manual mode
  • Compact design for easy installation and maintenance
  • Mounting on a standard DIN rail
  • Designed for installations where power continuity is essential
  • Used in homes, industrial facilities, shopping centres, greenhouses and other applications


General features:
Width - number of modules: 4
Weight [kg]: 0.65
Dimensions [mm]: 143 x 96 x 69
Electrical characteristics:
AC protection type: Power switch
Nominal voltage [V]: 400
Rated current [A]: 125
Feed-in phases: 3