Turck BL20-S4T-SBBS | BL20 Base Module, 4-Tier Tension Spring Connection, 8-Contacts

The BL20-S4T-SBBS (Ident-No: 6827046) is a "slice" style wiring base designed for high-density control cabinet applications. It uses Tension Spring (Cage Clamp) technology, which is ideal for high-vibration environments as it provides a constant-tension, maintenance-free connection. Unlike the "SBCS" version you looked at earlier, the "SBBS" model features standard internal power distribution (Bus-Bus) rather than specialized C-rail grounding access.