The Siemens RV421G Fusible Bus Plug XL-X is a 30 A, 240 V device designed for 3-phase, 4-wire grounded power systems. As a fusible bus plug, it provides a protected, fused connection within compatible Siemens RV-series switchgear, enabling safe feeder installation and circuit isolation. The XL-X designation specifies this configuration for 3-phase, 4-wire ground applications.
