Schneider Electric ZB2BM33C ZB2BWB31C Green Indicator Push Button Panel Mount
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The combination of the ZB2BW33C (Green Illuminated Push Button Head) and ZB2BWB31C (Metal Body, Fixing Collar, Integrated 24V Green LED Light Block, & 1 NO Contact) forms a panel-mounted illuminated control and signaling element. Part of Schneider Electric's Easy Harmony XB2 / ZB2 metal series, this assembly provides an ergonomic user interface for industrial control panels, automation equipment, and motor control centers.

Specification

• Manufacturer: Schneider Electric
• Product Range: Easy Harmony XB2 / ZB2 Series
• Component Part Numbers:
  • ZB2BW33C: Green Flush Illuminated Push-Button Operator Head (Spring Return)
  • ZB2BWB31C: Metal Body / Fixing Collar + 1 NO Contact Block + 24V Green BA9s LED Light Block
• Standard Panel Cutout Diameter: 22.5mm (Standard 22mm hole size)
• Bezel & Fixing Collar Material: Chromium-plated metal (Zamak fixing collar)
• Contact Configuration: 1 NO (Normally Open), Silver Alloy (Ag/Ni) slow-break contacts
• Contact Electrical Ratings:
  • AC-15: 3A at 240V AC
  • DC-13: 0.27A at 250V DC
  • Thermal Current (Ith): 10A
• Illumination Voltage (Us): 24V AC/DC (50/60 Hz)
• Light Source Type: Integrated Green LED bulb (BA9s base type)
• Terminal Wiring Standard: Screw-clamp terminals (Supports up to 2 x 1.5mm² or 1 x 2.5mm² wire ends)
• Protection Ratings: IP65 front-face protection (Dust and water-jet resistant) / IK06 mechanical impact resistance
• Mechanical Life Expectancy: 3,000,000 operations
• Operating Ambient Temperature: -25°C to +70°C

Features

• Modular Two-Part Clip-On Architecture: The green operator head (ZB2BW33C) snaps onto the metal body base (ZB2BWB31C) using a clip-assembly mechanism. This simplifies installation and allows easy contact block or bulb replacements without removing the entire switch from the panel cutout.
• Durable Metallic Construction: Built with a chrome-plated metal bezel and Zamak fixing collar. This ensures high resistance to mechanical shock, vibration, and harsh industrial environments compared to light-duty plastic buttons.
• Bright 24V LED Illumination: The integrated green BA9s LED light block operates directly on 24V AC/DC control circuits. It provides visual feedback for machine state signaling (e.g., "System Ready" or "Motor Running").
• IP65 Ingress Protection: Features internal sealing rings that maintain an IP65 protection rating from the front of the control panel, guarding against oil, wash-down liquids, and industrial dust buildup.

Common Applications

• Motor Start Commands: Serving as the primary illuminated "START" button for 24V control logic circuits driving heavy magnetic contactors or soft starters.
• Automation State Signaling: Providing tactile momentary switching alongside visual indication that an automated cycle is actively running.
• Industrial Control Desks & Cabinets: Installed inside standard 22mm² control panel doors, remote operator pendant stations, and HVAC plant management panels.

Installation & Wiring Guide

• Prepare the Panel Cutout: Punch or drill a standard 22.5mm hole in the control box faceplate.
• Mount the Head: Insert the ZB2BW33C green flush head through the front of the panel cutout.
• Secure the Collar Assembly: Place the ZB2BWB31C metal fixing collar onto the back of the head from inside the panel door. Tighten the rear metal locking screw to a torque of 0.8 - 1.0N.m to ground the assembly to the panel and lock it in place.
• Wire the Contact Block (13 - 14 NO): Connect your 24V control line to screw terminals 13 and 14. When the spring-return operator is pressed, contact 13-14 closes to complete the signal path.
• Wire the LED Light Block (X1 - X2): Connect your 24V AC/DC power leads to the light block terminals marked X1 and X2 to energize the green indicator.