The MARATHON/KULKA 411 GP series single-row terminal blocks offer a robust solution for connecting wires in various industrial applications. These blocks are rated for 300 Volts AC/DC and feature an open-back design, requiring an insulator strip for optimal voltage ratings. Constructed with phenolic bases and plated brass terminals, they accommodate #18-#20 AWG wire and are available with a range of hardware options including quick connects and solder terminals. UL Recognized and CSA Certified, these terminal blocks ensure reliable performance and safety in demanding environments.