Schneider Electric ZB4BZ1043 2NC Contact Block

Product Description

The SCHNEIDER ELECTRIC ZB4BZ1043 is a 2NC (double normally-closed) electrical switch contact block designed for use in industrial control and signaling circuits. It serves as the switching element within a pushbutton or selector switch assembly, opening the control circuit when the operator device is actuated. Electrically rated for low-voltage control applications, this contact block meets a broad set of international and domestic standards, making it suitable for panel builders, maintenance electricians, and industrial controls technicians working across a wide range of installations. The compact 2 x 2 x 2 inch form factor fits standard ZB4 series operator bodies.

This contact block is intended for use in industrial control panels, machine control stations, and operator interface assemblies where normally-closed switching logic is required. Typical applications include emergency stop circuits, interlocking schemes, and status-signaling loops in both light manufacturing and heavy industrial environments. Installation is handled by licensed electricians or qualified controls technicians as part of panel assembly or field maintenance work.

Key Features

• 2NC contact configuration provides double normally-closed switching for interlocking and safety control circuits
• Compact cube form factor at 2 x 2 x 2 inches for easy integration into standard operator assemblies
• Certified to UL 508, CSA C22.2 No. 14, EN/IEC 60947-5-1, and multiple marine and international standards
• Recognized by Bureau Veritas, DNV, GL, and RINA for marine and offshore panel applications
• Single-unit packaging with no minimum order multiplier requirement

Compatibility

Designed as an OEM-style replacement contact block for use with compatible ZB4 series pushbutton and selector switch operator bodies in industrial control panel assemblies.

Installation Notes

Installation should be performed by a licensed electrician or qualified controls technician. De-energize and lock out the control panel in accordance with NFPA 70E and applicable NEC requirements before servicing any contact block. Verify that the operator body and contact block series are matched before assembly to ensure proper mechanical actuation. Do not exceed the contact block rated voltage and current for the circuit being controlled.