... 100, 250)Wetted parts: Copper alloyCase material: Black steel case and bezel,fixed with screw Window: GlassIP class: IP 43Options/notes: Model ... B : chrome plated case and bezelModel + C : chrome plated case and connectionLower or back entry,63 and 100 with option of panel mount ... or surface mount,40,50,63 with option of U-clamp with SS crimped ring Standard gauge,steel case