Multi-core clamp on ammeter

Hi folks, I own a Megger MMC850 which will read amps in a multi-core cable, such as the 10 gauge SEOOW cable one often finds feeding rack PDUs. Datasheet here: http://www.mouser.com/ds/2/263/MMC850_DS_en_V02-15853.pdf Apparently they've been discontinued. Pity. Anyone know of a suitable replacement? I need more. -r