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  Home > Transfer Switches > ASCO Transfer Switches > ASCO 300 Commercial Transfer Switches > ASCO 300 3-Phase Commercial Transfer Switches >

  ASCO 300 Series 600A 3-Phase 4-Wire Automatic Transfer Switch - 2 wire start Nema 3R

ASCO 300 Series 600A Automatic Transfer Switch - 2 wire start
(purely indicative picture)

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Special Order: See below for shipping lead time.

Availability: Usually Ships in 2 to 3 Weeks
Product Code: ASCO-300-600A-3R3PH4W

Voltage Options

3-Phase 120/208V
3-Phase 120/240V
3-Phase 277/480V

Description Technical Specs & Downloads
Product Details

NEMA 3R Enclosure

  • The Series 300 is listed to UL 1008 standard for Transfer Switch Equipment and CSA standard C22.2 for automatic transfer switches.
  • Meets NFPA 110 for Emergency and Standby Power Systems and the National Electrical Code (NEC) Articles 700, 701 and 702.
  • Compact sizes rated 30 through 3000 amps in a compact design.
  • Available to 600 VAC, single or three phase.
  • True double-throw operation: The single solenoid design is inherently inter locked and prevents contacts from stopping between sources or from being in contact with both sources at the same time.
  • There's no danger of the Series 300 ATS transferring loads to a dead source because the unique ASCO single-solenoid operator derives power to operate from the source to which the load is being transferred.
  • Easy-to-read flush-mounted control and display panel provides LED indicators for switch position and source availability. It also includes test and time-delay bypass switches as standard features.
  • Standard engine exerciser for weekly automatic testing of engine generator set with or without load.
  • Supplied with solid neutral termination.
  • Optional switched neutral pole available.
  • Accessory kits available for field upgrades.
  • Available for immediate delivery.
  • Now available for service entrance applications. Contact ASCO for assistance.
  • With space in electrical closets being at a premium, the use of wall or floor-mounted ASCO Power Transfer Switches assures designers optimum utilization of space.
  • All transfer switches through 2000 amps are designed to be completely front- accessible. This permits the enclosures to be installed flush to the wall and still allows installation of all power cabling and connections from the front of the switch.
  • Cable entrance plates are also standard on the 1600 and 2000 amp units to install optional side-mounted pull boxes for additional cable bending space.
  • Adjustable time-delay feature prevents switch from being activated due to momentary utility power outages and generator dips.

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Apelectric.com really got my generator out quickly. I placed my order first thing in the morning, and it shipped that afternoon. It was simple to choose the right maintenance kit and battery. The options just popped up at check out. I have already recommended their website to the electrician who installed my generator.

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