Schneider Electric ZB4BG4 Key Selector Switch 2-position

Product Description

The SCHNEIDER ELECTRIC ZB4BG4 is a 2-position key-operated selector switch with a maintained (MA) action, designed for industrial control panel applications. It features a round metal bezel with a 22 mm panel cutout and a black key operator that can be removed at any position. The switch carries an IP69K ingress protection rating, making it suitable for washdown and high-pressure cleaning environments. UL Listed and compliant with EN/IEC 60947-5-1, the ZB4BG4 is built to NEMA 4X and NEMA 13 standards. Licensed trades and panel builders install this component in machine control, process automation, and industrial enclosure assemblies.

The ZB4BG4 is used in residential and commercial industrial control applications where a durable, key-controlled switching point is required. Its shock-resistant and vibration-resistant construction makes it well suited for machinery, manufacturing lines, and process control panels subject to mechanical stress or frequent washdown cycles. The non-illuminated, round-head design fits standard 22 mm operator cutouts found across a wide range of control enclosures and panel layouts.

Key Features

• 2-position maintained (MA) key operation with black key removable at any position
• 22 mm round metal bezel head fits standard panel cutouts
• IP69K ingress protection rating — withstands high-pressure, high-temperature washdown
• NEMA 4X and NEMA 13 rated for dust and liquid resistance
• Shock-resistant and vibration-resistant construction for demanding industrial environments
• UL Listed with multi-standard certification including CSA, EN/IEC 60947-5-1, and GL

Compatibility

Designed as an OEM-style key selector operator for 22 mm round-hole control panel cutouts meeting NEMA 4X and NEMA 13 enclosure requirements.

Installation Notes

Installation is typically performed by a licensed electrician in accordance with NFPA 70 (NEC) requirements for control circuit devices. De-energize and lockout/tagout the control panel before mounting or wiring this operator. The 22 mm cutout should be deburred and clean before inserting the operator body to ensure a proper seal and maintain the IP69K rating. Do not overtighten the retaining nut, as this may distort the bezel or compromise the ingress protection gasket.