Overview: Overview: Metri-Pack 630 Series. These sealed connectors are designed for applications that require protection from environmental hazards. They meet or exceed the requirements for most marine, appliance, and industrial control applications. Rated for up to 46 amps, like the 480 Series connector series, they can withstand temperatures as low as -40°F (-40°C) and as high as 257°F (125°C). TPAs and triple-rib silicone coated Packard cable seals provide an always secure and completely protected connection.