Electrols presents barrier terminal blocks [series 50]. The electrical ratings of these blocks are tb 53:15a at 300 v, and tb 54:20 a at 300 v. Barrier terminal blocks come in single row, high barrier, closed back, moulded in nylon glass filled, from 2 to 22 number of ways in basic blocks or with choice of various types of terminals like lp for pcbs, etc., and accessories.