Power-transfer switch

1404build03p-1ASCO 300 series power-transfer switch for mid-range installations is rated at 30 to 3,000 A and is available to 600 VAC, single- or three-phase. Features include a compact, modular design and a single-solenoid transfer mechanism that allows transfers in less than 100 msec. The design requires no motors, gears, or complicated mechanisms and is said to prevent contacting both sources at the same time or connecting to a dead source. Configurations include wall- or floor-mounted enclosures and an available service entrance with circuit breaker and NEMA 3R enclosure.
Emerson Network Power, Florham Park, NJ

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