ZB4BV03
Square D (Schneider Electric) ZB4BV03 Harmony Illuminated Pilot Light Head. Telemecanique Pilot Light Head, Illuminated, Series: ZB4, 22 mm Size, Round Shape, Chromium Plated Metal, Green. Additional Description: SQD -ZB4BV03 PILOT LIGHT. Catalog Description: Harmony, 22mm Push Button, pilot light head, green, with plain lens, for BA9s bulb.