Allen-Bradley 1492-H2K120 Terminal Block Surge Suppressor

Allen-Bradley 1492-H2K120 Finger-Safe Double-Circuit Surge Suppressor Block provides two independent surge-protection paths for the 1492 terminal-block system, designed to protect 120 V AC/DC PLC inputs. Each circuit clamps transient voltages using the built‑in suppressor network and is rated for 14 A, with a maximum clamping voltage of 360 V at Iρ = 14 A (8/20 μs). The unit accepts #30 to #12 AWG conductors and is white, finger-safe, and multi-rail mountable for dense panel installations. It has a nominal working voltage of 120 V (AC or DC) and allows maximum continuous voltages of 140 V AC and 180 V DC, respectively, making it suitable for 120 V PLC input protection. As part of the 1492 family, it integrates with Rockwell Automation terminal blocks and is offered with UR/CSA/IEC compatibility per catalog data. This compact surge-suppressor block is intended to be used alongside compatible terminal blocks to guard two PLC input circuits from transient overvoltages in industrial control panels.