An arc chamber comprising: a slot motor comprising a core and a housing having an opening therein; an arc chute; and a number of gassing inserts disposed in the opening of the housing, wherein the number of gassing inserts and the housing are structured to form a number of gas flow circulation paths, and wherein the number of gas flow circulation paths are structured to drive an arc into the arc chute, wherein the number of gassing inserts include two gassing inserts, wherein the number of gas flow circulation paths include a first gas flow circulation path and a second gas flow circulation path, wherein the housing and the two gassing inserts include a first end disposed away from the arc chute and an opposite second end disposed toward the arc chute, wherein the housing of the slot motor further has a first side and an opposite second side facing the first side, wherein the two gassing inserts are a first gassing insert disposed at the first side of the housing and a second gassing insert disposed at the opposite second side of the housing, wherein the first gas flow circulation path circulates from the arc chute toward the first end between the first gassing insert and the first side of the housing, wherein the second gas flow circulation path circulates from the arc chute toward the first end between the second gassing insert and the second side of the housing, and wherein each of the first and second gas flow circulation paths circulates back toward the arc chute between the two gassing inserts from a vent (36;40) on a corresponding one of the two gassing inserts, the vent (36;40) being located between the first end and the opposite second end of the corresponding one of the two gassing inserts. a slot motor comprising a core and a housing having an opening therein; an arc chute; and a number of gassing inserts disposed in the opening of the housing, wherein the number of gassing inserts and the housing are structured to form a number of gas flow circulation paths, and wherein the number of gas flow circulation paths are structured to drive an arc into the arc chute, wherein the number of gassing inserts include two gassing inserts, wherein the number of gas flow circulation paths include a first gas flow circulation path and a second gas flow circulation path, wherein the housing and the two gassing inserts include a first end disposed away from the arc chute and an opposite second end disposed toward the arc chute, wherein the housing of the slot motor further has a first side and an opposite second side facing the first side, wherein the two gassing inserts are a first gassing insert disposed at the first side of the housing and a second gassing insert disposed at the opposite second side of the housing, wherein the first gas flow circulation path circulates from the arc chute toward the first end between the first gassing insert and the first side of the housing, wherein the second gas flow circulation path circulates from the arc chute toward the first end between the second gassing insert and the second side of the housing, and wherein each of the first and second gas flow circulation paths circulates back toward the arc chute between the two gassing inserts from a vent (36;40) on a corresponding one of the two gassing inserts, the vent (36;40) being located between the first end and the opposite second end of the corresponding one of the two gassing inserts.