TA3 – Electronic timer module, delay on drop-out (parallel wiring)


The electronic timer TA3 is a delay on drop-out timing module wired in parallel. It maintains power on load during a specific time when load power is off. The delay time is set in factory between 0.125 s and 90 min. Longer times are possible upon request.
The plug-in design offers secure locking feature for maximum ease of maintenance (no wires need to be disconnected or other hardware removed for relay inspection or replacement). The resistance to impact and vibration is conform to standards in force for Railway Transported Equipment.
Positive mechanical keying of relay to socket is built into relay and socket during manufacture and terminal identifications are clearly marked on identification plate that is permanently attached to the relay.
The TA3 relays is pluggable in the following sockets: EA 102 A, EA 102 AF, EA 103 AF, EA 104 A, EA 104 AF, EA 105 AF, EA 112 AF.


The TA3 electronic timing module is designed for applications with a factory set timing function used for example in HVAC and lighting.


  • Delay on drop-out timing module wired in parallel
  • Duration range from 0.125 s to 90 min (setting in factory)
  • Longer times possible upon request
  • Plug-in design with secure locking feature for maximum ease of maintenance
  • -40 °C…+85 °C operating temperature


  • Proven reliable
  • Long life cycle
  • Accurate timing selection finger safe
  • Easy to maintain and replace
  • Low life cycle cost
  • No maintenance

Railway compliancy

  • CF 62-003 European railway standard
  • NF F 16-101/102 Fire behaviour – Railway rolling stock
  • EN 50155 Railway application – Electronic equipment used on rolling stock
  • IEC 61373 Railway application – shock and vibration tests




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