Screw terminal blocks secure the wire they are connecting or terminating against the conductor with a tightened screw that closes the clamp. In screwless terminal blocks, the block secures the wire through the action of a spring clamp.May 26, 2021
Are terminal blocks safe?
Terminal blocks increase safety by grounding, isolating, and protecting the other components in the electrical circuit. Terminal blocks are available with finger-safe connections to prevent electrical shock. And, terminal blocks can also provide test points, which add even more safety to the circuit.