Automatic Transfer Switches

Eaton's Magnum Transfer Switches are designed for a variety of standby power applications for critical and non-critical loads. They monitor both Source 1 (Normal) and Source 2 (Emergency) power sources. In the event of a Source 1 power interruption, these switches will automatically transfer the load circuits to the Source 2 power source. Once Source 1 power source has been restored, the process is automatically reversed.

The Magnum family of transfer switches covers applications ranging from 200 to 5000 amperes (A) through 600 Vac. Some of the applications are: automatic or non-automatic configurations, open or closed transition, and standard or rated suitable for use as service entrance. They are designed for applications where total system coordination must be accomplished while achieving a high level of Withstand, Interrupting, and Closing performance.

Drawout construction is available for applications such as critical life support systems, where preventive maintenance, inspection, and testing must be accomplished while maintaining continuity of power to the load.

Eaton Magnum Transfer Switches meet or exceed all industry standards for endurance, reliability, and performance. They are listed under CSA Spec 178 and Underwriters Laboratories UL 1008 Standard for Transfer Switch Equipment. With certain options, they also comply with Source 2 and standby system requirements as defined in NFPA 99 for health care facilities.

Features

• CSA Spec 178 and UL 1008 listed.
• Fastest switching times available (<3 cycles).
• High withstand ratings.
• Full 60-cycle short time withstand capability.
• Safe manual transfer under load.
• Multi-tap voltage selection plug.
• Integral service entrance capability.
• Integral overcurrent protection capability.
• Drawout capability.
• Stored energy switching device.
• Rear, side, and top cable access.
• Ability to test power switching devices in test position.
• Interchangeable power switching devices.
• Contact wear indication.
• Magnum insulated case devices.
• Programmable microprocessor controller with keypad entry and display.
• Communications capable.
• NEMA1 and 3R enclosures.
• Seismic Zone 4 Qualified (BOCA, CBC, IBC, UBC).
• American Bureau of Shipping Qualified.

Available Logic Controllers for Automatic Operation

• ATC-600 Open Transition IQ Transfer - Combines a full range of standard and optional features including sub-network capabilities for advanced control of systems up to 600 Vac
  more information
• ATC-800 Closed Transition IQ Transfer - Combines a full range of standard and optional features including sub-network capabilities for advanced control of passive closed transition (<100ms) systems up to 600 Vac
  more information

Standards and Certifications
Eaton Magnum Transfer Switches offer the utmost in flexibility, reliability and value. These switches must exceed many national and international standards. They are designed and built in accordance with the following:

• UL 891 . . . . . . Standard for Switchboards carrying up to 200,000 A
• UL 1008 . . . . . Standard for Safety for Automatic Transfer Switches
  (4000 and 5000 amperes available as UL 891 only.)
• UL 489 . . . . . . Standard for Circuit Breakers and Molded Case Switches
• CSA 22.2-178 . Canadian Transfer Switch Standard
• NEC Articles . . Code Sections
• 517, 700, . . . . . Applicable
• 701, 702 . . . . . Switch Equipment
• NFPA 110 . . . . Source 2 and Standby Power Systems
• NFPA 99 . . . . . Health Care Facilities
• EGSA 100S . . . Standard for Transfer Switches
• NEMA . . . . . . Standard for Transfer
• ICS10 . . . . . . . Switch Equipment
• UBC. . . . . . . . . Uniform Building Code for Seismic Zone 4
• ISO 9000 . . . . International Organization for Standardization
• CBC. . . . . . . . . California Building Code
• IBC . . . . . . . . . International Building Code
• BOCA . . . . . . . Building Officials Code Administrators.