Why does the discharge ceiling jump from 130 to 230 amps here?

The terminal changed. The F2 blocks below this one are limited by what a 0.250 inch push-on tab can carry for five seconds. The I1 insert on an M5 bolt is a different connection, and the larger plate group behind it supplies more current before the voltage sags. The 230 amp figure is a five second limit for inrush and fault checking, not a running current, and the short circuit figure of 591 amps is the number a fuse coordination study wants.

What is the 3.0 N·m torque figure for, and does it matter?

It matters more than most people expect on an outdoor block. The insert is lead alloy, so overtorquing an M5 bolt into it strips the thread and there is no repair. Undertorquing leaves a high resistance joint that heats under load and corrodes in a damp cabinet. CSB publishes 26.4 lbf-in with a ± 5.3 tolerance, which is a wide window; a small torque driver set at the center of it and a check at the first annual inspection is the whole procedure.

Is this the largest XTV part with a 3 year term?

Yes. CSB builds the XTV1255F2, 1272F2, 1285F2, 12120F2 and this 12200 in Vietnam with a 3 year warranty, and builds the 12550, 12800, 121000 and 121100 in Taiwan with a 4 year warranty. The design life figure does not change across that boundary; the term does, and the country of origin does. If a procurement rule cares about either, this is the last part in the range before both shift.

Two 1285F2 blocks in parallel, or one of these?

One of these, in almost every case. Two M7 blocks give about 17.6 Ah and require matched cables, a paralleling bus and two sets of push-on tabs to inspect. This single block gives 20.0 Ah on two bolted terminals in a case that is 7.12 by 2.99 inches, which is narrower than two M7 cases side by side. Parallel strings of small blocks age unevenly outdoors because one always sits closer to the cabinet wall; a single block does not have that problem.