Disconnect Switch, Fusible, 400A, 600VAC, 250VDC, 3P, NEMA 3R, Heavy Duty

Type TH heavy duty safety switches are designed for commercial and industrial applications where safety, high performance and continuity of service are essential. Heavy duty switches are available in 30 - 1200 amps, 600 V AC, 600 V DC maximum, fusible and non–fusible units, and in NEMA type 1 (indoor), type 3R (outdoor), type 4/4X (water- and dust-tight, corrosion-resistant), and type 5/12 (drip- and dust-tight) enclosures. When used with Class R or J fuses, 30 - 600 amp switches have a UL listed short circuit rating of 200,000 rms symmetrical amps. Switches rated 800 - 1200 amps use Class L fuses and have a UL listed short circuit rating of 100,000 rms symmetrical amps. Heavy duty safety switches are UL listed as service entrance equipment when installed in accordance with 2017 NEC for service equipment.