The 3040371 is a single, non-bridgeable ST-COMBI plug from the SP 2,5 series, intended for creating modular connections with ST terminal blocks. It supports a wide range of conductor sizes, from 0.08 to 4 mm² for solid wires and 28-12 AWG for stranded wires. The plug has an IEC rating of 24 A at 500 V, and is also approved by UL and CSA for 20 A at 600 V. Constructed from polyamide (PA) insulation material with a V0 flammability rating, it requires a stripping length of 10 mm for proper termination. This component offers a reliable and flexible wiring solution for various industrial control and automation systems.