Schneider Electric ZB4BG6 Key Selector Switch 22mm

Product Description

The SCHNEIDER ELECTRIC ZB4BG6 is a 2-position momentary key selector switch operator designed for industrial control panel applications. It features a round, non-illuminated black key operator with a metal bezel, mounted through a 22 mm panel hole. The momentary operation type means the switch returns to its default state when the key is released, making it well suited for start-stop sequences or operator-controlled interlock functions. The key can be removed only in the left position, providing a basic level of access control. Rated IP69K, this operator withstands high-pressure washdowns and harsh environmental conditions. It is installed by licensed electricians or qualified industrial maintenance technicians.

The ZB4BG6 is used in industrial and commercial control panel installations where a tamper-resistant, key-operated selector is required. Typical applications include machine tool panels, process control enclosures, conveyor systems, and other environments requiring washdown-rated components. The NEMA 4X and NEMA 13 ratings make it appropriate for indoor and outdoor installations exposed to moisture, dust, oil, and corrosive agents. Its shock-resistant and vibration-resistant construction suits it to demanding plant-floor environments. This operator head is part of a modular system, requiring a compatible contact block and mounting collar to form a complete switching unit.

Key Features

• 2-position momentary key operation with left-position key removal for access control
• IP69K ingress protection rating for high-pressure, high-temperature washdown environments
• NEMA 4X and NEMA 13 rated for resistance to moisture, dust, oil, and corrosion
• Round metal bezel with shock-resistant and vibration-resistant construction
• 22 mm mounting hole diameter for compatibility with standard 22 mm panel cutouts
• Listed to UL 508, CSA C22.2 No. 14, EN/IEC 60947-5-1, and multiple international standards

Compatibility

Designed for use in standard 22 mm diameter panel cutouts as part of a modular selector switch assembly. Compatible contact blocks and mounting hardware must be sourced separately to complete the switch unit.

Installation Notes

Installation should be performed by a qualified electrician in accordance with NEC requirements and applicable local codes. De-energize and lock out the control panel before mounting or wiring any switch components. The 22 mm panel cutout must be clean and free of burrs to ensure proper seating of the metal bezel and maintain the ingress protection rating. Do not overtighten the mounting nut, as this can crack the bezel or distort the panel and compromise the IP69K seal.