Clamping device for a withdrawable low-voltage circuit breaker unit

A slide-in clamping device for removably connecting a first electrical terminal of a withdrawable low-voltage circuit breaker to a corresponding second electrical terminal of a respective stationary base in a withdrawable low-voltage circuit breaker unit, the slide-in clamping device comprising:

• at least one pair of first clamping fingers facing each other and at least partially laterally delimiting a first clamping seat for one of said first and second electrical terminals, the first clamping seat comprising a respective slide-in opening;
• at least one pair of second clamping fingers facing each other and at least partially laterally delimiting a second clamping seat for the other of said first and second electrical terminals, the second clamping seat comprising a respective slide-in opening facing oppositely relative to the slide-in opening of the first clamping seat;
• a bias elastic mechanism acting on said at least one pair of first clamping fingers and said at least one pair of second clamping fingers so as to urge the clamping fingers of each pair towards each other in a clamping direction substantially perpendicular to respective slide-in directions of said first clamping seat and said second clamping seat;
• and
• at least one displaceable spacer assembly having a displaceable spacer member, wherein the displaceable spacer member is displaceable between an active position, in which the displaceable spacer member contacts the first clamping fingers of the at least one pair of first clamping fingers or the second clamping fingers of the at least one pair of second clamping fingers urging them away from each other in the clamping direction, and an inactive position, in which the displaceable spacer member does not apply any force to said first clamping fingers or said second clamping fingers.