Grey K-LOK 400A connectors identify the neutral conductor in North American 277/480V high-voltage systems and Line 3 (L3) under the IEC 60446 standard. In venues running 480V three-phase utility feeds, grey 400A connectors are standard on the neutral leg of every main feeder run. In IEC territories, grey serves as the third phase line alongside brown (L1) and black (L2). This dual role across voltage tiers and international standards makes grey an essential color for any operation working on both 120/208V and 277/480V systems or spanning NA and IEC conventions. All K-LOK 400A grey connectors share the full 400A/600V specification with brass contacts and Santoprene body. Available in line connector, panel mount receptacle, double set screw, and threaded stud configurations.
Region / Standard | Color | Designation |
|---|---|---|
NA 277/480V | Neutral | |
IEC 60446 | L3 (Line 3) |
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