These PCB terminal blocks retain the wire securely by a spring type clamp. The wire is held very securely but can be quickly released by depressing a release lever. The wire can be inserted/released indefinitely with virtually no deterioration of the contact/spring assembly. Both 2 & 3 pole are available and the housing of each is dove tailed to stack together and make any number of poles.

Pitch: 5.0mm
Housing material: PA66
Contact/spring assembly: Stainless Steel
Will accept wires from 22-14AWG
Temperature rating: -40 to +105C
Power rating: 5kV rated / 250VAC Cat III

Also available:
HM3142 – 3 Way Spring Terminal Block