{"product_id":"schneider-electric-pushbutton-harmony-xb4","title":"Schneider Electric Harmony XB4 Push Buttons, Selector Switches \u0026 Pilot Lights","description":"\u003ch2\u003eSchneider Electric Harmony XB4 Push Buttons, Selector Switches \u0026amp; Pilot Lights\u003c\/h2\u003e\u003cp\u003eBuild a clear machine-control interface with the specified operator or indication device. Match mounting diameter, return action, contact configuration and lamp voltage. A head, contact block and complete assembly are different supply formats.\u003c\/p\u003e\u003cp\u003eEach model below has its own part number and electrical specification. Select the reference that matches the equipment schedule; the selected variant determines the price and availability.\u003c\/p\u003e\u003ch3\u003eModels and technical specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003cth\u003eDesignation\u003c\/th\u003e\n\u003cth\u003eElectrical ratings\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BD53\u003c\/td\u003e\n\u003ctd\u003eHarmony | Selector switch, metal, black, Ø22, 3 positions, spring spring return, 2 NO\u003c\/td\u003e\n\u003ctd\u003eContacts: 2 NO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BK124B5\u003c\/td\u003e\n\u003ctd\u003eIlluminated selector switch, metal, red, Ø22, 2 positions, stay put, 24 V AC\/DC, 1 NO + 1 NC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 24 V AC\/DC; Contacts: 1 NO + 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BK124M5\u003c\/td\u003e\n\u003ctd\u003eHarmony | Illuminated selector switch, metal, red, Ø22, 2 positions, stay put, 230…240 V AC, 1 NO + 1 NC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 230..240 V AC; Contacts: 1 NO + 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BK125M5\u003c\/td\u003e\n\u003ctd\u003eIlluminated selector switch, metal, orange, Ø22, 2 positions, stay put, 230…240 V AC, 1 NO + 1 NC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 230..240 V AC; Contacts: 1 NO + 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BS9442\u003c\/td\u003e\n\u003ctd\u003eHarmony | Emergency stop switching off, metal, red mushroom Ø40, Ø22, trigger latching key release, 1 NC\u003c\/td\u003e\n\u003ctd\u003eContacts: 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BVB3\u003c\/td\u003e\n\u003ctd\u003ePilot light, metal, green, Ø22, plain lens with integral LED, 24 V AC\/DC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 24 V AC\/DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BVB5\u003c\/td\u003e\n\u003ctd\u003eHarmony | Pilot light, metal, orange, Ø22, plain lens with integral LED, 24 V AC\/DC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 24 V AC\/DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BVB6\u003c\/td\u003e\n\u003ctd\u003eHarmony | Pilot light, metal, blue, Ø22, plain lens with integral LED, 24 V AC\/DC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 24 V AC\/DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BVM1\u003c\/td\u003e\n\u003ctd\u003eHarmony | Pilot light, metal, white, Ø22, plain lens with integral LED, 230…240 VAC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 230..240 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BVM4\u003c\/td\u003e\n\u003ctd\u003eHarmony | Pilot light, metal, red, Ø22, plain lens with integral LED, 230…240 VAC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 230..240 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BVM6\u003c\/td\u003e\n\u003ctd\u003eHarmony | Pilot light, metal, blue, Ø22, plain lens with integral LED, 230…240 VAC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 230..240 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BW3365\u003c\/td\u003e\n\u003ctd\u003eHarmony | Illuminated push button, metal, flush, green, Ø22, spring return, \u0026lt;= 250 V, 1 NO + 1 NC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 250 V; Contacts: 1 NO + 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BW33B5\u003c\/td\u003e\n\u003ctd\u003eHarmony | Illuminated push button, metal, flush, green, Ø22, spring return, 1 NO + 1 NC 24 V AC\/DC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 24 V AC\/DC; Contacts: 1 NO + 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BW3465\u003c\/td\u003e\n\u003ctd\u003eHarmony | Illuminated push button, metal, flush, red, Ø22, spring return, \u0026lt;= 250 V, 1 NO + 1 NC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 250 V; Contacts: 1 NO + 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BW34B5\u003c\/td\u003e\n\u003ctd\u003eIlluminated push button, metal, flush, red, Ø22, spring return, 1 NO + 1 NC 24 V AC\/DC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 24 V AC\/DC; Contacts: 1 NO + 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BW3565\u003c\/td\u003e\n\u003ctd\u003eIlluminated push button, metal, flush, orange, Ø22, spring return, \u0026lt;= 250 V, 1 NO + 1 NC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 250 V; Contacts: 1 NO + 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BW35B5\u003c\/td\u003e\n\u003ctd\u003eIlluminated push button, metal, flush, orange, Ø22, spring return, 1 NO + 1 NC 24 V AC\/DC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 24 V AC\/DC; Contacts: 1 NO + 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BW73731M5\u003c\/td\u003e\n\u003ctd\u003eHarmony | Illuminated double-headed push button, metal, Ø22, 1 green flush I + 1 pilot light + 1 red projecting O, 240 V AC, 1 NO + 1 NC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 240 V AC; Contacts: 1 NO + 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BL73415\u003c\/td\u003e\n\u003ctd\u003eDouble-headed push button, metal, Ø22, 1 green flush marked I + 1 red projecting marked O, 1 NO + 1 NC\u003c\/td\u003e\n\u003ctd\u003eContacts: 1 NO + 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BVG3\u003c\/td\u003e\n\u003ctd\u003ePilot light, metal, green, Ø22, plain lens with integral LED, 110…120 VAC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 110..120 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BVG4\u003c\/td\u003e\n\u003ctd\u003ePilot light, metal, red, Ø22, plain lens with integral LED, 110…120 VAC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 110..120 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BVG5\u003c\/td\u003e\n\u003ctd\u003eHarmony | Pilot light, metal, orange, Ø22, plain lens with integral LED, 110…120 VAC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 110..120 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BW31B5\u003c\/td\u003e\n\u003ctd\u003eHarmony | Illuminated push button, metal, flush, white, Ø22, spring return, 24 V AC\/DC, 1 NO + 1 NC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 24 V AC\/DC; Contacts: 1 NO + 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BW31M5\u003c\/td\u003e\n\u003ctd\u003eHarmony | Illuminated push button, metal, flush, white, Ø22, spring return, 230…240 V AC, 1 NO + 1 NC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 230..240 V AC; Contacts: 1 NO + 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZB4BS844\u003c\/td\u003e\n\u003ctd\u003eHarmony | Emergency stop head, switching off, metal, red mushroom Ø40, Ø22, trigger latching turn to release\u003c\/td\u003e\n\u003ctd\u003eSee model designation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZB4BW643\u003c\/td\u003e\n\u003ctd\u003eHarmony | Illuminated mushroom push button head Ø40, metal, red, Ø22, latching push-pull, integral LED\u003c\/td\u003e\n\u003ctd\u003eSee model designation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZB4BZ009\u003c\/td\u003e\n\u003ctd\u003eBody\/fixing collar for electrical block, metal\u003c\/td\u003e\n\u003ctd\u003eSee model designation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BA22\u003c\/td\u003e\n\u003ctd\u003ePush button, Harmony XB4, black flush, metal, 22mm, spring return, 1NC, unmarked\u003c\/td\u003e\n\u003ctd\u003eContacts: 1NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BA61\u003c\/td\u003e\n\u003ctd\u003ePush button, metal, flush, blue, Ø22, spring return, unmarked, 1 NO\u003c\/td\u003e\n\u003ctd\u003eContacts: 1 NO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BK123B5\u003c\/td\u003e\n\u003ctd\u003eIlluminated selector switch, metal, green, Ø22, 2 positions, stay put, 24 V AC\/DC, 1 NO + 1 NC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 24 V AC\/DC; Contacts: 1 NO + 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BK123M5\u003c\/td\u003e\n\u003ctd\u003eHarmony | Illuminated selector switch, metal, green, Ø22, 2 positions, stay put, 230…240 V AC, 1 NO + 1 NC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 230..240 V AC; Contacts: 1 NO + 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BK125B5\u003c\/td\u003e\n\u003ctd\u003eHarmony | Illuminated selector switch, metal, orange, Ø22, 2 positions, stay put, 24 V AC\/DC, 1 NO + 1 NC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 24 V AC\/DC; Contacts: 1 NO + 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BK133M5\u003c\/td\u003e\n\u003ctd\u003eHarmony | Illuminated selector switch, metal, green, Ø22, 3 positions, stay put, 230…240 V AC, 1 NO + 1 NC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 230..240 V AC; Contacts: 1 NO + 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BK134M5\u003c\/td\u003e\n\u003ctd\u003eIlluminated selector switch, metal, red, Ø22, 3 positions, stay put, 230…240 V AC, 1 NO + 1 NC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 230..240 V AC; Contacts: 1 NO + 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BW36M5\u003c\/td\u003e\n\u003ctd\u003eIlluminated push button, metal, flush, blue, Ø22, spring return, 230…240 V AC, 1 NO + 1 NC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 230..240 V AC; Contacts: 1 NO + 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXD4PA24\u003c\/td\u003e\n\u003ctd\u003eJoystick controller, Harmony XB4, metal, 22mm, 4 directions, spring return, 1NO\u003c\/td\u003e\n\u003ctd\u003eContacts: 1NO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BA3351\u003c\/td\u003e\n\u003ctd\u003eHarmony | Push button, metal, flush, black, Ø22, spring return, marked DOWN ARROW, 1 NO\u003c\/td\u003e\n\u003ctd\u003eContacts: 1 NO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BA4322\u003c\/td\u003e\n\u003ctd\u003ePush button, metal, flush, red, Ø22, spring return, marked O, 1 NC\u003c\/td\u003e\n\u003ctd\u003eContacts: 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BC21\u003c\/td\u003e\n\u003ctd\u003eHarmony | Push button, metal, black mushroom Ø40, Ø22, spring return, unmarked, 1 NO\u003c\/td\u003e\n\u003ctd\u003eContacts: 1 NO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BJ21\u003c\/td\u003e\n\u003ctd\u003eHarmony | Selector switch, metal ,black Ø22, long handle, 2 positions, stay put, 1 NO\u003c\/td\u003e\n\u003ctd\u003eContacts: 1 NO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BJ33\u003c\/td\u003e\n\u003ctd\u003eHarmony | Selector switch, metal, black Ø22, long handle, 3-positions, stay put, 2 NO\u003c\/td\u003e\n\u003ctd\u003eContacts: 2 NO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BK123G5\u003c\/td\u003e\n\u003ctd\u003eHarmony | Illuminated selector switch, metal, green, Ø22, 2 positions, stay put, 110…120 V AC, 1 NO + 1 NC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 110..120 V AC; Contacts: 1 NO + 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BK133B5\u003c\/td\u003e\n\u003ctd\u003eHarmony | Illuminated selector switch, metal, green, Ø22, 3 positions, stay put, 24 V AC\/DC, 1 NO + 1 NC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 24 V AC\/DC; Contacts: 1 NO + 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BK134B5\u003c\/td\u003e\n\u003ctd\u003eIlluminated selector switch, metal, red, Ø22, 3 positions, stay put, 24 V AC\/DC, 1 NO + 1 NC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 24 V AC\/DC; Contacts: 1 NO + 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BP31\u003c\/td\u003e\n\u003ctd\u003ePush button, metal, projecting, green, Ø22, spring return, booted, unmarked, 1 NO\u003c\/td\u003e\n\u003ctd\u003eContacts: 1 NO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BS9445\u003c\/td\u003e\n\u003ctd\u003eEmergency stop switching off, metal, red mushroom, Ø40, Ø22, trigger latching key release, 1 NO + 1 NC\u003c\/td\u003e\n\u003ctd\u003eContacts: 1 NO + 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BW33G5\u003c\/td\u003e\n\u003ctd\u003eHarmony | Green flush complete illum pushbutton Ø22 spring return 1NO+1NC 110…120V\u003c\/td\u003e\n\u003ctd\u003eVoltage: 110..120V; Contacts: 1NO+1NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BW34G5\u003c\/td\u003e\n\u003ctd\u003eHarmony | Red flush complete illum pushbutton Ø22 spring return 1NO+1NC 110…120V\u003c\/td\u003e\n\u003ctd\u003eVoltage: 110..120V; Contacts: 1NO+1NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BW35G5\u003c\/td\u003e\n\u003ctd\u003eHarmony | Orange flush complete illum pushbutton Ø22 spring return 1NO+1NC 110…120V\u003c\/td\u003e\n\u003ctd\u003eVoltage: 110..120V; Contacts: 1NO+1NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BW36B5\u003c\/td\u003e\n\u003ctd\u003eHarmony | Illuminated push button, metal, flush, blue, Ø22, spring return, 1 NO + 1 NC 24 V AC\/DC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 24 V AC\/DC; Contacts: 1 NO + 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXB4BW36G5\u003c\/td\u003e\n\u003ctd\u003eHarmony | Blue flush complete illum pushbutton Ø22 spring return 1NO+1NC 110…120V\u003c\/td\u003e\n\u003ctd\u003eVoltage: 110..120V; Contacts: 1NO+1NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZB4BA18\u003c\/td\u003e\n\u003ctd\u003eIlluminated push button head, metal, flush, white, Ø22, spring return, integral LED, for insertion legend, unmarked\u003c\/td\u003e\n\u003ctd\u003eSee model designation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZB4BA2\u003c\/td\u003e\n\u003ctd\u003ePush button head, metal, flush, black, Ø22, spring return, unmarked\u003c\/td\u003e\n\u003ctd\u003eSee model designation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZB4BD3\u003c\/td\u003e\n\u003ctd\u003eSelector switch head, metal, black, Ø22, 3 positions, stay put\u003c\/td\u003e\n\u003ctd\u003eSee model designation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZB4BD4\u003c\/td\u003e\n\u003ctd\u003eSelector switch head, metal, black, Ø22, 2 positions, spring return from right to left\u003c\/td\u003e\n\u003ctd\u003eSee model designation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZB4BR216\u003c\/td\u003e\n\u003ctd\u003eHead for non illuminated pushbutton, Harmony XB4, mushroom 60mm, metal, black, 22mm, spring return, hemispherical\u003c\/td\u003e\n\u003ctd\u003eSee model designation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZB4BV033\u003c\/td\u003e\n\u003ctd\u003ePilot light head, metal, green, Ø22, plain lens for integral LED\u003c\/td\u003e\n\u003ctd\u003eSee model designation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZB4BV043\u003c\/td\u003e\n\u003ctd\u003ePilot light head, metal, red, Ø22, plain lens for integral LED\u003c\/td\u003e\n\u003ctd\u003eSee model designation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZB4BV053\u003c\/td\u003e\n\u003ctd\u003ePilot light head, metal, orange, Ø22, plain lens for integral LED\u003c\/td\u003e\n\u003ctd\u003eSee model designation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZB4BV063\u003c\/td\u003e\n\u003ctd\u003ePilot light head, metal, blue, Ø22, plain lens for integral LED\u003c\/td\u003e\n\u003ctd\u003eSee model designation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZB4BW31\u003c\/td\u003e\n\u003ctd\u003eIlluminated push button head, metal, flush, white, Ø22, spring return, plain lens for BA9s bulb\u003c\/td\u003e\n\u003ctd\u003eSee model designation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZB4BW333\u003c\/td\u003e\n\u003ctd\u003eIlluminated push button head, metal, flush, green, Ø22, spring return, plain lens integral LED\u003c\/td\u003e\n\u003ctd\u003eSee model designation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZBVB1\u003c\/td\u003e\n\u003ctd\u003eLight block, Harmony XB4 XB5, white, for head 22mm, universal LED, screw clamp terminals, 24V AC DC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 24V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZBVB5\u003c\/td\u003e\n\u003ctd\u003eLight block for head 22mm, Harmony XB4, orange, integral LED, 24V AC DC\u003c\/td\u003e\n\u003ctd\u003eVoltage: 24V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eSelection and installation\u003c\/h3\u003e\u003cp\u003eUse the exact part number when ordering replacement parts. Have a qualified electrical professional check the supply, load, protective coordination and manufacturer wiring instructions before commissioning. 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