https://www.lighting.philips.com/p/lighting-electronics/hid/hid-electromagnetic/hid-high-power-ballasts-for-son-mh-lamps/LP_CF_DHPSON_EU/family
Philips HID-High Power ballasts for SON/MH lamps | DHPSON | Philips lighting
Impregnated (HID standard) electromagnetic ballasts, of copper/iron construction, for use in combination with an external ignitor, for HID lamps
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