Multipolar circuit-protection assembly for a collector rail system

A multipole fused switch arrangement for busbar systems having at least two fused switch units (10) which each holds a fuse link (20), with the fused switch units (10) having a mounting and contact apparatus (11) for a busbar (90), and having a switching apparatus for closing and interrupting the circuit of all the switched fuse units (10),

• wherein
• the fused switch arrangement comprises a combined switching and blocking apparatus (30), having
• a switching lever (40) which can be switched to and fro between a switched-on position and a switched-off position,
• an operating arrangement (60) for switching switching links (12) in the fused switch unit (10), in which case the operating arrangement (60) can switch to and fro between a contact position and an interrupted position,
• in each case one blocking apparatus (70) for each fused switch unit (10) for blocking the operating arrangement (60) in the interrupted position, and
• a locking apparatus (80) for locking the fuse links (20) in an operating position, in which case the locking apparatus (80) can be switched to and fro between a locked position and an isolating position,
• with the locking apparatus (80) being coupled to the switching lever (40) such that it is in the locked position when the switching lever (40) is in the switched-on position, and is in the isolating position when the switching lever (40) is in the switched-off position, with the operating arrangement (60) being coupled to the switching lever (40) such that it is in the interrupted position when the switching lever (40) is in the switched-off position, and
• with a blocking apparatus (70) blocking the operating arrangement (60) in the interrupted position when one of the fuse links (20) of the associated fused switch arrangement is not in its operating position.