Schneider Electric ZB4BJ8 3-position Momentary Selector Switch

Product Description

The SCHNEIDER ELECTRIC ZB4BJ8 is a 3-position momentary selector switch operator designed for industrial control panel applications. It features a black, non-illuminated handle with a round head and a metal bezel that mounts through a 22mm panel hole. The momentary (MO) operation means the switch returns to center when released, making it well-suited for jog, inch, or temporary-command functions. The IP69K ingress protection rating and shock- and vibration-resistant construction support use in demanding environments. Licensed electricians and control panel builders are the primary installers of this switch operator.

This selector switch operator is used in industrial and commercial control panels where a 22mm mounting footprint is standard. Its NEMA 13 and 4X ratings make it appropriate for locations exposed to oil, dust, and washdown conditions. The momentary 3-position configuration supports applications such as forward-stop-reverse, jog-left and jog-right, or other temporary-command circuits common in machine control and process automation. It is sold as a standalone operator head and requires a compatible contact block for circuit completion.

Key Features

• 3-position momentary operation returns to center on release
• 22mm panel cutout diameter fits standard 22mm control station hardware
• IP69K rated for high-pressure washdown and dust-tight environments
• NEMA 13 and NEMA 4X rated for oil-tight and corrosion-resistant applications
• Metal bezel construction with shock- and vibration-resistant design
• Non-illuminated black handle for clear operator identification
• Meets UL 508, CSA, and multiple IEC standards including EN/IEC 60947-5-1

Compatibility

Designed as an OEM-style 22mm selector switch operator compatible with standard 22mm control station contact block assemblies in industrial panel applications. No specific compatible model numbers were provided in the product data.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the NEC and applicable local codes. De-energize the control panel and lock out/tag out all power sources before removing or installing switch operators. The operator head mounts through a 22mm panel cutout and requires a separately sourced contact block to complete the switching circuit. Do not exceed the contact block ratings when applying this operator in a circuit.