Allen-Bradley 1492-WM4 Mini Feed-Through Terminal Block

The Allen-Bradley 1492-WM4 Mini Feed-Through Terminal Block is a single-circuit IEC screw-connection block designed to carry a conductor through a panel or enclosure while terminating on both sides. It accepts 4 mm² conductors (approximately 22 AWG to 10 AWG) or 2.5 mm² in the related 1492-W family variant, with standard feedthrough. The Gray WM4 variant is rated for up to 300 V AC/DC and 20 A, making it suitable for powering and signaling across control panels in automation circuits. This part is part of the 1492-W series of screw mini-blocks, with color options including White (WM4-W) and other variants to suit equipment styling. In the IEC DoC for the 1492-W series, WM4 is described as a 4 mm² single-circuit mini-block, designed for through-pass connections in industrial installations. Common uses include wiring across enclosures to connect field devices to control systems while preserving insulation and organization across panel boundaries.