4 Channel 10A Relay


The DDC494 relay unit is a fully DALI compatible interface unit, designed to allow non-dimmable loads to be incorporated into a DALI lighting control system. The relay unit is a DIN rail mounted unit that can control four individually programmable relays. The relays are normally open, volt free and can switch up to 10A resistive loads.

Key Features

  • Four individually programmable relays, normally open and volt free
  • Relays are internally isolated permitting separate phases to be controlled in one unit
  • All DALI functions are programmable with system software

Order Code

  • DDC494


DDC494 Dimensions
88 90 58


  • The external mains supply to the unit must be protected, external protection must not exceed 6A MCB
  • All cables must be mains rated
Relay Loads10A Resistive
8A Incandescent
5A Inductive
15 Electronic Ballasts
DALI ConnectionsRemovable connector blocks with paired terminals
0.5mm²–1.5mm² solid or stranded
All cables must be mains rated
Main Connectionsup to 4mm² solid core or up to 2.5mm² stranded
Mains Supply220–240V AC, 50–60Hz
DALI Consumption2mA
HousingDIN rail case 88mm wide
IP RatingIP30 (IP00 at connections)
Ambient Temperature0°C to 40°C
Storage Temperature-10°C to 70°C
Relative Humidity90% max, non-condensing
Compliance and Standards
EmissionEN 55 015
ImmunityEN 61 547
SafetyEN 60 950
EnvironmentComplies with WEEE and RoHS directives


DDC494 Wiring Diagram