Connectwell din rail spring clamp 4mm ground terminal connectwell tteccscg4t a screwless spring clamp ground terminal block the spring clamp is operated by using a screw driver to provide an access to wire through the opening in the spring clamp the wire is held against the current bar directly by a pre stressed spring clamp specially designed alloy feet help in achieving very low bonding resistance and vibration proof grounding the terminals can be mounted on din 35 rail with other termi