Overview
The Telemecanique XB4BA31 is a single-pole single-throw (SPST) momentary pushbutton operator from the Harmony XB4 series. This 22mm flush-mount green pushbutton delivers robust performance in industrial control panels and machine safety applications. With a 1NO contact configuration, spring-return operation, and chromium-plated metal bezel, the XB4BA31 provides durable, reliable switching for on/off and start/stop control.
Key Features
- 22mm flush-mount round green pushbutton with unmarked operator
- 1NO (normally open) contact with slow-break silver alloy (Ag/Ni) switching
- Spring-return momentary operation for safe impulse control
- Chromium-plated metal bezel with Zamak fixing collar
- Screw-clamp connection terminals for field installation
- IP66/NEMA 4X/NEMA 13 environmental protection rating
- 1,000,000 electrical cycle rating for long service life
Technical Specifications
The XB4BA31 meets demanding industrial requirements with verified electrical and mechanical performance data:
- Rated Impulse Voltage: 6 kV
- Operating Force: 3.8 N
- Button Diameter: 22 mm flush mount
- Button Color: Green
- Contact Type: 1NO, slow-break
- Contact Material: Silver alloy (Ag/Ni)
- Operation Type: Spring return (momentary/impulse)
- Terminal Type: Screw-clamp
- Body Material: Zamak (zinc die-cast)
- Bezel Material: Chromium-plated metal
- IP Rating: IP66
- NEMA Rating: NEMA 4X, NEMA 13
Typical Applications
The XB4BA31 is widely used in industrial automation and machine control panels where momentary push-button actuation is required. Common applications include:
- Machine tool start/stop controls
- Safety system acknowledgment and reset buttons
- Production line conveyor and assembly line control
- Pump and motor control panels
- Wet and corrosive environments (IP66 rating)
- CNC and automated equipment control stations
Compatibility & Replacements
The XB4BA31 is part of the Schneider Electric Harmony XB4 modular control system. Its standardized 22mm footprint and screw-clamp terminals integrate seamlessly with existing XB4 series pilot lights, selector switches, and contact blocks. Green color coding is industry-standard for momentary start/run commands. When planning replacements or repairs, verify contact configuration (1NO), terminal type (screw-clamp), and mounting profile (flush) to ensure compatibility with your panel layout and wiring scheme.
