The Siemens 3VM9313-0KB05 is a broadened terminal cover designed for use with the plug-in socket accessory on 3-pole 3VM13 and 3VM14 circuit breakers. It is a mechanical accessory that widens the terminal shroud to accommodate the socket footprint, maintaining finger-safe clearance per the breaker's IP2X/IPXXB touch protection.
Packaged as a single piece, the cover measures 110.00 x 122.00 x 75.00 mm. It mounts directly onto the breaker terminal face; the broadened profile creates clearance for the plug-in socket's rear body. No wiring or electrical rating applies — this is a purely mechanical accessory that does not alter the breaker's interrupting capacity or thermal-magnetic trip curve.