Electromagnetic switching device with arcing chambers

An electromagnetic switching device comprising:

• an interrupter chamber housing including a topside facing in an upward direction and defining at least one interrupter chamber;
• a cover for enclosing the at least one interrupter chamber at the topside of the at least one interrupter chamber, the cover including an underside facing opposite the upward direction and defining at least one recess in the underside;
• at least one respective interrupter contact disposed in each of the at least one interrupter chamber;
• and
• a respective arcing chamber associated with each of the at least one interrupter chamber, each respective arcing chamber including a plurality of arcing plates arranged so as to form a packet, an uppermost arcing plate of the plurality of arcing plates having at least one clip projecting in the upward direction for mating with a respective recess of the at least one recess so as to form a positive-locking joint and secure the respective arcing chamber to the cover, the uppermost arcing plate facing the cover and capable of functioning as a shield plate.