XB4 22 mm push buttons, selector switches and pilot lights with metal bezel are designed for industrial applications and to combine ease of installation and robustness.
Square D (Schneider Electric) ZB4BV043 Harmony Illuminated Pilot Light Head. Schneider Electric Harmony™ Pilot Light Head, Illuminated, Series: ZB4, 22 mm Dia, Round, Metal, Red. Additional Description: SQD -ZB4BV043 PILOT LIGHT HEAD RED. Catalog Description: Harmony, 22mm Push Button, pilot light head, red, with plain lens, for integral LED.