NX Series Hydraulic Power Units give Norshield vehicle barriers GO! Behind the powerful force protection of our barriers, the NX-1 and NX-2 HPU’s actuate the barrier(s) to quickly raise them into protected positions. In under 1 second, the NX Series HPU’s actuate literally tons of steel reliably and smoothly. Combining with expertly designed barriers to form the best in vehicle barrier systems, our NX Series HPU’s are top of the line.