What is an L22 plug?

What is an L22 plug?

An L22 is a NEMA 4P/5W 277/480V 3~ WYE Twist-lock plug. Geist offers this on North American 230/400V 3~ PDUs as an alternative to the IEC 309 4P/5W Pin and Sleeve connector. Note that the intended operation of this unit is for 230/400V only.