The ABB OZXA-38 is a bridging bar — what a panel builder calls a jumper bar — used to electrically link adjacent terminals or pins in a terminal block assembly. It saves daisy-chaining individual wires across a row of connections.
What it does in the panel
A bridging bar like this one sits across the screw or spring terminals of a terminal block row, distributing a common potential — say, a 24 VDC supply rail or a 0 V return — to multiple I/O points without individual wire links. It's a tidy, low-resistance connection that keeps the cabinet looking clean and cuts wiring time.