ITE Vacu-Break Heavy Duty Enclosed Safety Switch SN323, 100A 240V Fusible

The ITE Vacu-Break SN323 is a heavy-duty enclosed safety switch designed for reliable circuit protection in industrial and commercial electrical systems. This fusible switch features Clampmatic F-Contacts for secure connections and is rated for 100A at 240V AC, with compatibility for 250V DC applications. It is a 3-pole, 3-wire configuration (marked as 2P/3W in some contexts, but operates as 3-pole fusible), suitable for indoor use with a NEMA 1 enclosure that provides basic protection against contact with live parts. Key applications include motor control, equipment isolation, and branch circuit protection in manufacturing facilities, warehouses, and utility rooms. Benefits include robust construction for high durability, easy fuse replacement, and compliance with UL standards for safety. Compared to non-fusible switches, it offers overcurrent protection via fuses, reducing the risk of electrical faults. Drawbacks may include the need for fuse replacements after faults and slightly higher maintenance compared to circuit breakers. Its Vacu-Break technology minimizes arcing during operation, enhancing safety and longevity over basic knife switches. This model is ideal for environments requiring dependable, manual disconnect capabilities with horsepower ratings up to 30HP at 240V.