Sorry no one had a reply for you yet...
Here's what you do.
1. About mid-way of the station between where that shield is and the point where you entered the station... is a set of passages (can't think of a better way to describe them) ... enter them.
2. You will enter two passage \"rings\", one inner, one outer. In the outer ring you will find 2 switches and 1 fuse. A shield will be protecting one of the switches, and a shield will be protecting the fuse, but one switch will NOT be protected. HIT THAT SWITCH !!
3. Go to the shield you asked about in this thread and you'll see that it's now disabled. Hit that switch.
4. Go back up to the switches and fuse and you'll find that the shield protecting the other switch is now disabled. Hit that switch.
5. Pick up the fuse (it's no longer shieled)
6. Back at the top of the station, is a small room protected by a blastable grill. The walls of that room say \"Fuse Box\". Go to that room. As soon as you enter that room, the Level Ending should trigger (you've just placed the fuse in the Fuse Box... thus igniting the Station... the last objective).
Since you're on a timer the moment you enter the station... you have only just over 2 minutes to find these switches in order, get the fuse, place fuse in fuse box.... Better hurry.
Hope you saved your game just before entering the station.