Phoenix contact jumpers rb fbs and test adaptor phoenix contact 3030226 the phoenix contact jumper fbs 20 5 is for cross bridging at the terminal centre and is suitable for ut 25 st 25 sti 25 dti 25 qtc 15 qttcb 15 stn 25 utn 25 pit 25 pittb 25 piti 25 pitn 25 phoenix contact 3030226 jumper fbs 20 5