Basic functions:

• Minimum voltage relays
• Maximum voltage relays
• Differential voltage relays
• Minimum current relays
• Maximum current relays
• Differential current relays
• Interval voltage relays
• Frequency protection relays
• Phase sequence relays

Advantages:

• High galvanic separation
• No auxiliary supply needed, stand alone
• High reliability, no maintenance due to reliable and proven electromechanical technology
• Strong ability to withstand high overloads
• Equipped with weld no transfer
  contacts for critical applications

For On-Board applications:

• Traction brake monitoring relay
• Traction overcurrent relay
• Traction isolation breakdown relay
• Catenary min. voltage detection relay
• Catenary max. voltage detection relay
• Wheel slip relay
• Insulation breakdown relay
• Battery monitoring relay
• Motor/alternator monitoring relay
• Pre-load filter detection relay
• Ground fault detection relay

For Trackside applications:

• Directional current detection relay (reverse current detection in power distribution)
• Catenary voltage (1500V) detection relay
• 3rd rail voltage detection relay
• Substation ground fault detection relay
• Heat tracing cable surveillance relay
• Current overload relay (15000A)