This is a Schneider Electric Harmony ZB4 series pilot light head, a complete round yellow indicator unit for signaling applications in control panels and machinery. It mounts directly onto standard pushbutton bases and requires voltage specification verification (LED vs. incandescent, AC/DC rating) before procurement to ensure compatibility with your control circuit.
This document confirms the above specification is available in
the ACG Industrial catalogue. Pricing and availability on request.
Forward to your procurement team to initiate an RFQ.