The Square D™ VH363 is a VisiPacT™ heavy duty fusible safety switch rated at 100A, 600 VAC/600 VDC, 3-pole, in a NEMA 1 steel enclosure for indoor use. Features a factory-installed viewing window for quick visual verification of switch position and color-coded Red (On) / Black (Off) indicator handle. Accepts Class H, K, and R fuses as shipped; field-modifiable for J fuses. Short circuit rating: 10 kA (H or K) / 200 kA (R or J). Quick-make, quick-break mechanism with dual cover interlock. Tested per UL98 and NEMA KS1. Mechanical endurance three times greater than NEMA standard.
