Schneider Electric ZB4BC5 22 mm Yellow Mushroom Head Push Button

22 mm Yellow Mushroom Head Operator

The Schneider Electric ZB4BC5 is a 22 mm yellow mushroom head push button designed for industrial control panels. It provides a momentary contact function with a 40 mm metal head and metal bezel. The unit carries NEMA ratings 1, 2, 3, 4, 4X and 13 plus IP66 ingress protection. It suits operators who need a highly visible, rugged actuator for emergency or standard control circuits.

Replaces Worn or Non-Compliant Actuators

This operator replaces damaged, faded or non-compliant push buttons in existing 22 mm mounting holes. The jump is worth it when the current device lacks the required NEMA 4X or IP66 sealing, or when standards such as IEC 60947-5-1, UL 508 or CSA C22.2 No. 14 must be met. It also upgrades installations needing the yellow colour code for specific safety functions.

Fits Standard 22 mm Panels With Metal Construction

The button mounts in a standard 22 mm cut-out and its all-metal head, bezel and base material withstand vibration per IEC 60068-2-6 and shock per IEC 60068-2-27. It frees the panel builder from sourcing separate legend plates because none are applicable. Compliance with Bureau Veritas, DNV, GL, LROS and REACH RoHS requirements simplifies project approvals.