Bộ DIMMER Helvar - DIGIDIM 500 W Thyristor Dimmer (455)


 DIGIDIM 500 W Thyristor Dimmer (455)



 The DIGIDIM 500 W Thyristor Dimmer (leading edge) is a DALI-compatible lamp interface unit for use in a DIGIDIM lighting control system.

The dimmer is a DIN-rail mounted unit that can control a maximum load of 500 W. It can be connected to mains voltage lamps directly, or to low voltage lamps via a wire-wound transformer. The dimmer is provided with a status LED and a physical selection switch.

The LED provides status and fault indications, the physical selection switch is used to identify the device during system configuration.

Note: This unit does not contain a DALI power supply. Therefore, one must be incorporated elsewhere in the system.



 Key Features

  • Out-of-box operation. No programming required when using DIGIDIM slider, rotary or push button panels.
  • Input voltage and frequency fluctuation compensation ensures stable output levels with fluctuating incoming mains levels.
  • Over current and over temperature protection.
  • DIN-rail mounted and only 35 mm wide.


Additional Functions

The following functions may be programmed using the DIGIDIM Toolbox software:

  • Maximum/minimum levels, fade times*, scenes* and groups*
  • Dimmer status report
  • System failure level/ignore
  • Power on level
  • Power on to last level


* These functions are also programmable using a Helvar infrared remote handset.



Technical Data





Standard DIGIDIM removable terminal block 0.5 mm² – 1.5 mm² stranded or solid core


Up to 4 mm² solid core or up to 2.5 mm² strandedNote: If equipment is used in an electrically noisy environment, the DALI cable should be screened and connected to the earth.


Mains supply:

220 VAC – 240 VAC, 50 Hz – 60 Hz

Heat dissipation:

3.5 W with maximum load (resistive)

DALI supply output:

None (Use external DALI power supply)

DALI consumption:

2 mA

Mechanical data


35 mm × 58 mm × 90 mm


DIN-rail case 35 mm wide


DIN rail (installation in switchgear/controlgear cabinet)


110 g

IP code:


Operating and storage conditions

Ambient temperature:

0 °C to +40 °C Above this temperature, derate according to the adjacent graph.

Relative humidity:

Max. 90 %, noncondensing

Storage temperature:

–10 °C to +70 °C

Conformity and standards

EMC emission:

EN 55015

EMC immunity:

EN 61547


EN 61347-2-11


3 kV


Complies with WEEE and RoHS directives.


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