Specifications Parameter Specification Product Range Harmony XB2 Device Type Illuminated Push Button (Momentary Action) Model XB2-BSM4LC Button Type Square, illuminated push button Button Dimensions 22×22mm (front panel) Cutout Dimensions 20.5×20.5mm (panel cutout) Button Color Typically black or dark gray with blue LED illumination LED Specifications • Color: Blue • Voltage: Typically 24V DC (may vary by specific version) • Current: ~20mA (at rated voltage) • Lens: Clear/transparent lens Action Type Momentary (returns to original position when released) Contact Configuration Requires separate contact block (not included) Contact Rating Dependent on contact block (typically 10A at 250V AC) Electrical Life Dependent on contact block (typically 1×10⁶ operations at rated load) Mechanical Life 10×10⁶ operations (actuator mechanical life) Operating Force Approximately 3-5N Button Travel Approximately 3mm Protection Degree Front panel: IP65 (when properly installed) Behind panel: IP20 Terminal Type Screw clamp terminals (on contact block) Wire Range 0.5-1.5mm² (AWG 20-16) stranded wire Mounting Snap-on to contact block, panel mounted with mounting ring Panel Thickness 1-4mm (using appropriate mounting accessories) Ambient Temperature -25°C to +70°C (operation) Storage Temperature -40°C to +85°C Standards Compliance IEC/EN 60947-5-1, UL 508, CSA C22.2 No. 14