Wago test plug adaptor 1 pole for 255 257 series pcb terminal blocks 249 series wago 249 114 wago 249 114 test plug adaptor 1 pole for 255 256 257 series pcb terminal blocks pin spacing 10mm 0394 in grey wago 249 114 test plug adaptor 1 pole for 255 257 pcb terminal blocks grey 100pk