Square D brand MP Meter Pak meter centers offer a wide range of multi metering applications. UL Listed NEMA Type 3R construction meets EUSERC standards. The 9 inch meter center spacing allows for more sockets per device creating lighter, more compact branch enclosures. Four meter socket configurations available with options such as ring or ringless, 4 and 5 jaw, horn or lever, and jaw release. This MP meter pak is rated at 125 A with 3 positions. It has no bypass and a 300 A main bus. This system is a ringless type.