Steca XTM4000-48

Steca XTM4000-48

The basic functions of the combined inverters Steca Xtender are the inverter, the battery charger, the switching function and the support of external sources of alternating current. These functions can be combined and controlled fully automatically. The inverters offer outstanding user-friendliness and very good exploitation of the energy available.

All the settings of the Steca Xtender can be remote controlled. When software with new functions is available, it can be loaded into the system, so the Steca Xtender always stays up to date. Several Steca Xtender can be connected in parallel or to form a three-phase system. That means that up to nine Steca Xtender can work together.


Product features

  • True sine wave voltage
  • Excellent overload capabilities
  • Optimal battery protection
  • Adjustable integrated battery charger
  • Multistage programmable battery charger with PFC
  • Automatic load detection
  • Standby load detection adjustable over a wide range, starting from a low value
  • Parallel connectable
  • Best reliability
  • Can be used as a back-up system or uninterruptible power supply (UPS)
  • Multifunction contact
  • Adjustable power sharing
  • Reliable and noiseless with any kind of load
  • Support of sources of alternating current (Smart Boost)
  • Automatic support for peak loads (Power Shaving)
  • Ultra-fast transfer relay
  • High efficiency
  • Control by digital signal processor (DSP)

Electronic protection functions

  • Deep discharge protection
  • Battery overvoltage shutdown
  • Over temperature and overload protection
  • Short circuit protection
  • Reverse polarity protection by internal fuse (except Steca Xtender XTH 3000)
  • Acoustic alarm at deep discharge or overheating


  • 5 Leds show operating states ~ for operation, fault messages


  • Main switch
  • Adjustable load detection


  • Type with 115 V / 60 Hz (except Steca Xtender XTH 8000-48)
  • Model with protective lacquered mainboard


  • Compliant with European Standards (CE)
  • ROHS compliant

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