Tronic Sodium E40 Bulb 400 Watts

A choke is necessary for sodium lamps in order to regulate the arc current flow and supply the proper voltage to the arc. Starting electrodes are not found in sodium lamps. Instead, a high-voltage pulse is produced by an electronic starting circuit within the ballast and delivered to the operational electrodes. Specifications: Colour Temperature: Warm White Lamp Type: E40 Watts: 400W Voltage: AC 220 – 240V Material: Glass Warranty: 1 Year