Dual stage Track Arrester, 0-30 VDC (0-50 VAC), 15 ampere load current. Same as LPC 15012-1 except AC voltage raised to 50 VAC to compensate for higher AC induction on rails due to nearby overhead high voltage transmission lines. Let-through voltage slightly higher but slightly shorter duration than the LPC 15012-1, at 170V for 1000 ampere 10/1000 µs wave.