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• Beginnings
• Gründerjahre "founder years"
• The fifties
• The sixties
• The seventies
• The eigthies
• The nineties
• The years between 2000 and today

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• Insulation monitoring
• Application
• Control and auxiliary circuits up to 300 V
• Main circuits AC, 3(N)AC, DC, AC/DC
• Special applications
• Insulation fault location system EDS
• Coupling devices
• Protocol converters
• Protocol converters for standard fieldbus systems and Ethernet networks
• Alarm indicator and operator units
• Visualization
• Accessories
• Hospital technology IEC 60364-7-710
• Application
• MEDICS
• Control modules for supply transfer systems with load swithes / circuit breakers in main distribution boards
• Changeover and monitoring modules for group 2 medical locations
• Isolating transformers
• Indications and operation
• I/O modules, signal converters
• Protocol converter for BMS, standard field bus systems and Ethernet networks
• Protocol converter and repeaters
• Visualization
• Power supply units
• Single components
• Floor-mounted and wall-mounted distribution cabinets for IT systems
• Technical information
• Worldwide standards
• Measuring and monitoring relays
• Application
• Voltage relays
• Asymmetry relays
• Phase sequence relays
• Frequency relays
• Current relays
• Monitoring relays for special functions
• Residual current monitoring
• Application
• Residual current monitors RCM for alternating currents and DC currents
• AC/DC sensitive residual current monitors RCMA for TN and TT systems
• Residual current monitoring systems RCMS
• Directionally discriminating residual current monitors
• Measuring current transformers
• Repeaters and interface converters
• Communication solutions
• Device overview alarm indicator and operator modules
• Visualization
• Accessories
• Test engineering

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