FIELD: electricity.
SUBSTANCE: invention relates to switch pole element. Switch pole element comprises insulating housing (1) for placement of vacuum circuit breaker insert (5) containing pair of corresponding switching contacts (4, 6), wherein stationary upper electric contact (4) is connected to upper electrical lead (2) formed in insulating housing (1), and movable lower electric contact (6) is connected to insulating housing (1) lower electrical lead (3) by means of electrical conductor (7), which is moved by adjoining pusher (8). Lower electrical lead (3) is connected with circular heat transfer plate (9) located along inner wall or at least partially inside wall of insulating housing (1) and encircling pusher (8) and/or movable lower electric contact (6) far end.
EFFECT: capacity to withstand additional temperature increase.
12 cl, 11 dwg
