An 11-pin relay socket (often called an octal or circular base) is an industrial wiring base used to mount 3-phase contactors, timers, and 3PDT (Triple Pole Double Throw) control relays without soldering. It allows quick, plug-and-play relay replacement during field maintenance while keeping the terminal wiring intact.

Features:
- durable 11-pin relay socket
- din rail round-edge mounting design
- reliable electrical connectivity
- compatible with round pin layout relays
- easy relay installation and replacement
- compact and robust construction
- suitable for industrial automation systems
- blue housing for easy identification