Allen-Bradley 937A-PR20 Power Rail, For Use With 937 Intrinsic Safety Module, 24 VDC, 4 A, -4 to 140 deg F Ambient

Power rail has two conductors for 24 VDC power and one conductor for collective error messaging. Power rail reduces wiring and maintenance costs because it eliminates the need to daisy chain the wires. It also simplifies expansion just snap in a new isolated barrier or converter barrier when you're ready to expand a system. Power rail is available in 2 or 0.8 m lengths, it can be cut to size per application needs.