BA9s lamp body is designed for use with Harmony XB4 pilot lamp heads.
Schneider Harmony XB4 Transformer Light Block 110-120VAC Supply 6V Incandescent BA9s Bulb Included
Removed
Schneider Harmony XB4 Transformer Light Block 230-240VAC Supply 6V Incandescent BA9s Bulb Included
Schneider Harmony XB4 Transformer Light Block 400VAC Supply 6V Incandescent BA9s Bulb Included
Schneider Harmony XB4 Direct Supply Light Block for BA9s Bulb or LED up to 250V