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A push button is an electrical control device that allows a circuit to be opened or closed with a simple press. Unlike a standard switch, it does not remain in the engaged position: a return spring automatically brings it back to its initial position as soon as it is released.
Schneider Electric push buttons are widely used in industry, building applications, and home automation to control, signal, or secure machines and installations. Schneider is a global leader in this field, particularly with its Harmony range, renowned for its robustness, modularity, and ergonomic design.
The Harmony XB4 range from Schneider Electric offers Ø22 and Ø30 mm metal pushbuttons, indicator lights, selectors and emergency stops, designed to combine modern design, robustness and modularity.

Common Applications
The Harmony XB4 range from Schneider Electric includes industrial pushbuttons, pilot lights, selector switches, and emergency stop devices in metal, available in Ø 22 mm and Ø 30 mm. Designed to meet the demands of the most challenging environments, these control and signaling units combine modern design, exceptional robustness, and simplified installation.
Key Advantages of the Harmony XB4 Range
Key Innovations
Applications
The Harmony XB4 range meets the needs of many sectors, including: Machine tools and industrial automation ,Food and beverage processing and packaging ,Water treatment and pumping ,Oil & Gas and harsh environments and Logistics and material handling
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With Schneider Electric Harmony XB4, modernize your control panels, enhance the safety of your installations, and reduce maintenance costs. Choose reliable, modular, and certified solutions designed to last.
| XB4 Variant | Material / Finish | Diameter | Key Features | Ideal Applications |
|---|---|---|---|---|
XB4 Variant XB4 Standard | Material / Finish Chrome-plated metal | Diameter 22 mm | Key Features Extreme robustness, long service life (10 million operations), wide range of functions | Ideal Applications Heavy industry, machine tools, harsh environments |
XB4 Variant XB4 Flush-Mounted | Material / Finish Flush chrome-plated metal | Diameter 30 mm (flush mounting) | Key Features Modern aesthetics, improved ergonomics, smooth surface easy to clean | Ideal Applications Design-focused machines, food industry, premium panels |
XB4 Variant XB4 ATEX | Material / Finish ATEX-certified metal | Diameter 22 mm | Key Features Enhanced safety for explosive zones (gas or dust) | Ideal Applications Petrochemical industry, mining, explosive environments |
XB4 Variant XB4 with Universal LED | Material / Finish Chrome-plated metal + LED blocks | Diameter 22 mm | Key Features Bright, uniform illumination, one LED block for all colors | Ideal Applications Clear panel signaling, reduced spare parts inventory |
XB4 Variant XB4 with Advanced Connections | Material / Finish Chrome-plated metal | Diameter 22 mm | Key Features Integrated USB/RJ45 ports, buzzers, timers, small displays | Ideal Applications Connected panels, simplified maintenance, local monitoring |
Schneider Electric's Harmony XB5 range offers a modern, reliable, and cost-effective solution for industrial control and signaling. With its Ø22 mm plastic pushbuttons, indicator lights, selectors, and emergency stops, Harmony XB5 meets essential needs while offering an ergonomic and user-friendly design.

Typical Applications
This model is built to last, offering high-level protection against dust, water, and impacts, with ratings up to IP69K. It withstands vibrations and operates safely within a temperature range of –25 °C to +70 °C. Certified to the most demanding international standards, it delivers reliability and durability even in the toughest industrial environments.
Harmony XB5 stands out for its modularity and ease of installation. Quick-connect push-in contact blocks allow tool-free wiring, while the universal LED technology reduces the number of required references, ensuring optimal brightness in all colors. A wide range of customization accessories, such as legend plates and caps, is available to tailor each interface to your specific needs.
Versatile and adaptable, the XB5 range integrates seamlessly into all sectors: industrial machinery, electrical panels, production lines, and sensitive applications. It also includes innovative modules such as integrated USB and RJ45 ports for easier maintenance and monitoring, wireless and battery-free versions for remote control (XB5R), and models designed for explosive environments (ATEX).
With Harmony XB5, you choose a clear, robust, and scalable control interface designed to enhance operator efficiency and reduce installation and maintenance costs. It is the ideal solution to equip your machines and control panels, combining performance, reliability, and accessibility.
| XB5 Variant | Material / Finish | Diameter | Key Features | Ideal Applications |
|---|---|---|---|---|
XB5 Variant XB5 Standard | Material / Finish High-strength plastic | Diameter 22 mm | Key Features Cost-effective, modern design, wide range of pushbuttons, pilot lights, and selector switches | Ideal Applications General industry, control stations, electrical panels |
XB5 Variant XB5 Flush-Mounted | Material / Finish Flush plastic | Diameter 30 mm (flush mounting) | Key Features Enhanced aesthetics, optimal ergonomics, easy to clean | Ideal Applications Modern machinery, refined design, food industry environments |
XB5 Variant XB5R (Wireless / Battery-Free) | Material / Finish Plastic | Diameter 22 mm | Key Features Radio transmission, unlimited autonomy without batteries, quick installation | Ideal Applications Remote controls, conveyors, hard-to-access areas |
XB5 Variant XB5 ATEX | Material / Finish Certified reinforced plastic | Diameter 22 mm | Key Features Suitable for explosive atmospheres (gas and dust), enhanced safety | Ideal Applications Petrochemical industry, food processing, hazardous zones |
XB5 Variant XB5 with Advanced Functions | Material / Finish Plastic | Diameter 22 mm | Key Features USB/RJ45 ports, buzzers, timers, compact displays | Ideal Applications Simplified maintenance, local monitoring, connected enclosures |
| Range | Material / Finish | Diameter | Key Features | Ideal Applications |
|---|---|---|---|---|
Range Harmony XB4 | Material / Finish Chrome-plated metal | Diameter 22 mm | Key Features Ultra-robust, long service life, resistant to harsh environments | Ideal Applications Heavy industry, machine tools, dusty or humid environments |
Range Harmony XB5 | Material / Finish High-strength plastic | Diameter 22 mm | Key Features Lightweight, cost-effective, good mechanical resistance | Ideal Applications General industry, tertiary sector, control panels |
Range Harmony XB7 | Material / Finish Compact plastic | Diameter 22 mm | Key Features Quick installation, simplified wiring | Ideal Applications Compact electrical panels, simple applications |
Range Harmony XB6 | Material / Finish Plastic | Diameter 16 mm | Key Features Compact size, aesthetic design | Ideal Applications Controls on small panels, interactive terminals |
Range Compact Pushbuttons | Material / Finish Plastic or metal | Diameter 22 mm | Key Features Space-saving, tool-free wiring | Ideal Applications Electrical enclosures with limited space |
Range Emergency Stop | Material / Finish Metal or plastic | Diameter 22 or 30 mm | Key Features Safety, unlocking by rotation or key | Ideal Applications Machine stop, operator safety |