OSRAM ST111/ST151/ST171 Starters Introducing the ST111/ST151/ST171 series of fluorescent tube lamps starters from OSRAM. These high-quality devices have been designed to ignite every time, reliably and quickly. Each starter is a subject to strict manufacturing and quality control tests. Thanks to using the excellent quality components, these starters ensure long-life operation of up to 4 years and extend the lamp life by 20%. The case is made of Makrolon (self-extinguishing plastic) and meet the conditions laid down for protection class II. Features and Benefits: DEOS ST 171 SAFETY, DEOS ST 172 SAFETY and DEOS ST 173 SAFETY are safety starters DEOS ST 172 SAFETY is a safety starter for series circuits (tandem circuits) DEOS ST 171 SAFETY, DEOS ST 172 SAFETY and DEOS ST 173 SAFETY are designed to operate with conventional control gear (CCG) and low-loss gear (LLG) They reliably disconnect burnt-out or faulty lamps under inductive or capacitive operating conditions They are instantly ready for operation when the red button is pressed in (there must be an audible click) The automatic cutout circuit protects the choke and the starter itself Four times the life of conventional starters To ensure reliable ignition and operation the DEOS ST should be replaced after every four lamp replacements. Temperature range for reliable cutout: -20°C…+80°C Extends the lamp life by 20% Self-extinguishing plastic casing made of Makrolon. Class V2 Equipped with special radio-interference suppression capacitor (foil winding capacitor) Suitable for 220V-240V AC operation. 50/60 Hz, series circuit and single circuit 4W ...22W at 110V/127V NOTE: To ensure reliable ignition we recommend that you also replace the starter when you replace the lamp. Starters cannot be used for OSRAM DULUX S/E, D/E, T/E or T/E IN lamps.