Protect RCS SPRE-TPRE Thyristor-based 3- & 1-phase rectifier and charger system


The Protect RCS DC system has been developed and designed to provide high reliability power supply and battery charging capability. The Protect RCS DC system is a thyristor-controlled rectifier, suitable for charging nickel-cadmium or lead-acid batteries while supplying DC loads. It can also be used without batteries as a direct power supply.

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IP43 protection open

Protection against water and dust

Easy Maintenance Easy maintenance open

Service-friendly design ensures rapid and easy maintenance and minimizes service costs

Industrial-grade open

A robust design crafted for harsh environments and high requirements

Higher availability open

Redundancy capabilities increase the availability of this device to the highest possible level
  • Type SPRe
  • Input mains voltage 220V/230V/240V
  • Output DC voltage 24/48/60/110/125 V
  • Output DC current 25A - 100A
  • Cabinet size (HxWxD) 1200x600x840 mm 2000x600x840 mm
  • Type TPRe
  • Input mains voltage 380V/400V/415V
  • Output DC voltage 24/48/60 &
    110/125/220 V
  • Output DC current 25A - 1200A
  • Cabinet size (HxWxD) 1200x600x840 mm 2000x1500x840 mm

The rectifier is built from independent building blocks and can be equipped with optional items such as distribution boards, diode droppers etc. built inside or in a separate cabinet. The cabinets are floor mounted and can be designed to meet specific environmental requirements. The batteries are mounted in free-standing racks or in cabinets together with or separated from the rectifier.


  • Input isolation transformer, isolated DC output with built-in earth fault detection
  • Standard system configurations
  • Heavy industrial duty design
  • Building block modular design
  • Built-in protection
  • Digital processing and setting of all parameters
  • Monitoring of all parameters via the front panel display
  • Built-in intelligent battery management
  • Temperature-compensated charge voltage regulation
  • Manual or automatic high rate charge
  • Parallel operation for redundancy and power increase
  • Alarm- and event logger, with a date and time-stamped event log memory
  • Large communication facility options
  • In-built programable logic control to provide a wide range of interaction possibilities with external systems


  • Existing pre-defined configurations to allow reduced lead times
  • Highly customizable with a fully comprehensive list of options and fully flexible design
  • Compatible with all industrial battery types including gas recombination, with easy parameter adjustment
  • Field proven high reliability with microprocessor-controlled thyristor technology
  • Ease of installation, start-up & maintenance, low Mean Time To Repair (MTTR)
  • Global service support