A gassing insulator for an arc chute assembly of an electrical switching apparatus, the electrical switching apparatus including a housing and separable contacts (6,8) enclosed by said housing, said arc chute assembly including first and second opposing sidewalls (52,54) and a plurality of arc plates, said arc plates having a plurality of first legs coupled to one of said first and second opposing sidewalls (52,54) of said arc chute assembly, a plurality of second legs coupled to the other of said first and second opposing sidewalls (52,54) of said arc chute assembly, first ends disposed proximate said separable contacts (6,8) of said electrical switching apparatus in order to attract an arc generated by said separable contacts (6,8) being opened, and second ends disposed distal from the first ends, said gassing insulator comprising: a number of insulating members (302,304), each insulating member (302,304) of said number of insulating members (302,304) comprising: a first side (306,308) structured to be coupled to one of said first and second opposing sidewalls (52,54) of said arc chute assembly; a second side (310,312) disposed generally opposite said first side (306,308); a first end (314,316) structured to be disposed at or about the first ends of said arc plates; and a second end (318,320) disposed distal from the first end (314,316) of said each insulating member (302,304) and being structured to extend toward the second ends of said arc plates, characterised in that said first side (306,308) of said each insulating member (302,304) is structured to overlay at least one of said first and second legs (102,104) of said arc plates of said arc chute assembly, in order that said at least one of said first and second legs (102,104) is disposed behind said first side (306,308), between said first side (306,308) and said one of said first and second opposing sidewalls (52,54) of said arc chute assembly to electrically insulate said at least one of said first and second legs (102,104). a number of insulating members (302,304), each insulating member (302,304) of said number of insulating members (302,304) comprising: a first side (306,308) structured to be coupled to one of said first and second opposing sidewalls (52,54) of said arc chute assembly; a second side (310,312) disposed generally opposite said first side (306,308); a first end (314,316) structured to be disposed at or about the first ends of said arc plates; and a second end (318,320) disposed distal from the first end (314,316) of said each insulating member (302,304) and being structured to extend toward the second ends of said arc plates, characterised in that said first side (306,308) of said each insulating member (302,304) is structured to overlay at least one of said first and second legs (102,104) of said arc plates of said arc chute assembly, in order that said at least one of said first and second legs (102,104) is disposed behind said first side (306,308), between said first side (306,308) and said one of said first and second opposing sidewalls (52,54) of said arc chute assembly to electrically insulate said at least one of said first and second legs (102,104). a first side (306,308) structured to be coupled to one of said first and second opposing sidewalls (52,54) of said arc chute assembly; a second side (310,312) disposed generally opposite said first side (306,308); a first end (314,316) structured to be disposed at or about the first ends of said arc plates; and a second end (318,320) disposed distal from the first end (314,316) of said each insulating member (302,304) and being structured to extend toward the second ends of said arc plates, characterised in that said first side (306,308) of said each insulating member (302,304) is structured to overlay at least one of said first and second legs (102,104) of said arc plates of said arc chute assembly, in order that said at least one of said first and second legs (102,104) is disposed behind said first side (306,308), between said first side (306,308) and said one of said first and second opposing sidewalls (52,54) of said arc chute assembly to electrically insulate said at least one of said first and second legs (102,104).