Killark KP-604E45 - Suitable where a connection is required for portable or movable equipment such as tools, motors, hand lights, etc. Solder Terminations for sure connection. Copper free aluminum housing. Delayed action contacts ensure safe interconnect. Wide range of grommet openings. Extra long grounding pin makes contact first and breaks contact last Copper free aluminum. Delayed action contacts. Plugs with a wide range of grommet openings. Extra long grounding pole makes contact first and breaks contact last. Heavy duty construction to withstand rough and constant usage. - Class I, Divisions 1 & 2, Groups C, D - Class I, Zones 1 & 2, Groups IIB,IIA