Devtech Megasaver (DMS) is an electronics ballast for High Intensity Discharge lamps (HPS/MH/CMH/CDM-T). It is retrofit one box solution which gives constant output.


Protection Feature

  • Built-in 6kV/3kA Surge protection.
  • Lamp over voltage protection & shutdown.
  • Lamp under voltage protection & shutdown
  • Lamp short circuit/Warm-up failure protection & shutdown.
  • Open circuit/No-lamp protection & shutdown.
  • End-of-lamp-life (EOLL) detection & shutdown

Product Description

Product Features

  • Energy Efficient Low Frequency square wave Electronic ballast for HPS/MH/CMH/CDM-T lamp types.
  • Retrofit one box solution that replaces Magnetic Ballast, PF improvement Capacitor & Ignitor.
  • Constant Power Output to Lamp over a wide input voltage range (90V ~ 305V AC).
  • High Power Factor with value 0.98.
  • Low Harmonic Distortion with THD value 5%.
  • Flicker free lamp operation.
  • Maximum lamp life as a result of optimal lamp operation.
  • Lamp power and current control.
  • ASIC Control for Ballast operation and Lamp protection
  • Compact metal stamping housing for use inside of luminaires with reduced dimensions
  • Suitable for standard & lateral fixing with M4 screws
  • Easy installation and wiring due to screwless terminals.
  • Controlled ignition time interval (21 sec High & 64 sec Low) attempt stops after 20 minutes. Main supply must be switched OFF and ON to reset the ballast.
  • Comprehensive warranty.


  • Street Lighting
  • High Mast/High Bay Lighting
  • Industrial Lighting
  • Commercial Lighting
  • Parks & Townships
  • Municipal Corporations
  • Path way/Road way
  • Bridges & Tunnels
  • Warehouse/Parking Lot
  • Hazardous locations
  • Mines

Technical Data

Technical Data
AC Voltage Range AC 90 ~ 305V
Mains Frequency 50 / 60Hz
Power Factor >= 0.98
THD <= 5%
Lamp Op. Frequency 147 Hz
Max. Ignition Voltage 3kV ~ 4kV
Ambient Temperature -40 to +550 C
Ambient Temperature (ta) -40 to +550 C
Case Temperature (tc) Max 80°C
Storage Temperature -40°C to +85°C
Moisture & Humidity 5% to 95% RH (non-condensing)
Electrical Data
Product Code Lamp Wattage System Wattage Input Voltage Line Current Power Factor THD Max Cable length to lamp tc point max
DMS 20W 20W 23W 240V AC 0.1A >=0.98 <=5% Up to 50 Meters. 800C
DMS 35W 38W 35W 240V AC 0.16A >=0.98 <=5% Up to 50 Meters. 850C
DMS 50W 50W 55W 240V AC 0.23A >=0.98 <=5% Up to 50 Meters. 850C
DMS 70W 70W 76W 240V AC 0.32A >=0.98 <=5% Up to 50 Meters. 850C
Dimensional Data
Length (L) Width (W) Height (H) Net Weight
110 mm 75 mm 32 mm 0.3 kg

dms27 dimensions

Connection Diagram

dms27 connection