Siemens VB357BL is a panel-mounted, fusible safety switch designed for the safe isolation and protection of three-phase electrical circuits up to 800A. It features a 600V AC voltage rating and a high 200kA interrupting capacity at 480V, utilizing a Vacu-Break mechanism for arc interruption within a rugged, NEMA 1 enclosed construction. The switch is engineered for compliance with industrial safety standards and is compatible with FHP frames and Class T or L fuses. Its typical applications include service entrance disconnects and feeder circuit protection in industrial power distribution panels, motor control centers, and commercial electrical systems.
Key Features & Specifications
Type: Vacu-Break (VB) fusible safety switch, panel mount
Voltage Rating: 600V AC
Current Rating: 800A
Configuration: Single
Poles: 3
Phase: 3
AIC Rating: 200kA @ 480V
Switch Style: Fusible
Fuse Class: T, L
Compatible Frames: FHP
NEMA Rating: 1
Weight: 115.346 lb
Standards: Designed to meet applicable industrial safety standards
Applications: Service disconnects, feeder protection in industrial/commercial distribution