Dold Industries Ltd

11 Hamberts Rd. Blackall Ind. Estate
South Woodham Ferrers
GB-Essex, CM3 5UW
RK 7817

Multifunction relay

RK 7817


Nominal voltage

Time range

Approvals and Markings


  • 0061137
  • RK7817.81/61 AC230V+AC/DC24V
The multifunction timers RK 7817 in compact stepped front enclosures fulfills all the demands to... more

Product description

The multifunction timers RK 7817 in compact stepped front enclosures fulfills all the demands to modern time control devices. It completes the RK- timer range that covers with only a few single function variants all common timing functions, time ranges and voltage models. The MULTITIMER offers 8 functions, simply selectable via rotary switch and time ranges between 0.02 s and 300h. Besides the standard 1 c/o contact also a second c/o contact or an instantaneous c/o contact is available as option. Therefore this multifunction timer is suitable to realize flexible, time depending controls in industry and building automation.

Technical specifications

Width: 17,5 mm
Nominal voltage: AC, DC, AC/DC
Time range: 0,02 s - 300 h
Time function(s): On-delay, Off-delay, with control signal, On- and Off-delay, Flasher relay, Fleeting on make, Fleeting on break, Impulsgeber, Pulse extender
Approvals: UL
Output contacts: 2 C/O contacts, 1 C/O contact
Enclosure design: Distribution board
Type: RK 7817


  • Timers in compact design enclosures for consumer units
    - Multifunction relay RK 7817 with 8 functions and adjustment aid for quick setting of long times


  • According to IEC/EN 61812-1
  • 8 time ranges adjustable from 0.02 s to 300 h via rotational switches
  • Dual-voltage-version AC 230 V + AC/DC 24 V or AC 110 ... 127 V + AC/DC 24 V
  • Signle-voltage-version AC/DC 24 V or DC 12 V
  • 1 changeover contact
  • As option units with second changeover contact (only for voltage AC 230 V + AC/DC 24 )
    - on delayed
    - as instantaneous contact
  • 8 functions via rotational switches adjustable:
    - delay on energisation (AV)
    - fleeting on make (EW)
    - delayed pulse (IE)
    - flasher, start with puls (BI)
    - delay on de-energisation (RV)
    - pulse forming function (IF)
    - fleeting on break (AW)
    - delay on energisation and de-energisation (AV / RV)
  • With time interruption / time adding
  • LED indicators for operation, contact position and time delay
  • Width: 17.5 mm