3 AC Power Supply and Safety Unit

3 AC Power Supply and Safety Unit

The 3 AC Power Supply and Safety Unit is an A4 module that ensures the electrical safety of a workplace. It provides protection against overload, shortcircuit and earth leakage, prevents automatic activation after voltage recovery and offers emergency cutoff on each phase. It is a fixed-voltage three-phase ac power source with an integrated circuit breaker providing protection against overload and shortcircuit and switches off when a voltage failure occurs. After voltage recovery, the system must be switched on again. The all-current-sensitive RCD switch type B releases on fault currents of any voltage form. The integrated, lockable emergency stop switches off the output voltage on all phases when actuated. The color-coded 4mm safety jacks at standardized locations allow the connection of further system component, additional IEC C13 connectors allow safe connection of various system devices on standard single-phase voltage. Indicator lamps indicate the presence of the three phase power on the output jacks.


  • Ensures the electrical safety of a workplace
  • Integrated circuit breaker protects against shortcircuit and overload
  • Undervoltage detection and release protects against self-restart after recovering from a voltage failure
  • All-current-sensitive RCD Type B protects against current faults
  • Lockable emergency stop switches off all the outputs
  • IEC C13 connectors allow safe connection for additional system devices
  • Fit in standard A4 frames
  • Protective conductor connection, 4 mm² minimum diameter and deliberately unmistakable with 4 mm safety plug connections to prevent mix-up

Technical data

  • Input voltage: 3 AC/400 V/50 Hz
  • Power cord with CEE-plug 16 A, length 3 m
  • Output voltage: 3 AC/400 V/10 A (max.), protected against  shortcircuit and overload
  • RCD protection, Type B, 30 mA
  • One three-phase outlet via 4 mm safety jacks
  • Three single-phase IEC C13 outlets
  • Phase indicator on each phase for output voltage
  • Lockable Emergeny Stop
  • Designed for A4 mounting frames
  • Dimensions (H x W x D): 297 x 266 x 140 mm
  • Weight: 4.6 kg