ATC Contactor Based Bypass Isolation Automatic Transfer Switch
At a Glance
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Rating Range
100 to 1200A
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Transfer Type
Bypass Isolation
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Switch Type
Contactor Based
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Control Power
100-1200A 2-, 3-, 4-pole
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Overview
Cat® transfer switches are designed for a variety of standby power applications. They provide flexibility, reliability and value in a compact package. A Bypass Isolation Automatic Transfer Switch (ATS) provides fully functioning transfer in applications where emergency power to critical loads must be maintained at all times with no interruption. This type of design allows for inspection, maintenance or replacement of the power switching mechanisms with no interruption in electrical service. Contactor -based Bypass Isolation ATS are available from 100A to 1200A.
Technical Summary
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| Rating Range |
100 to 1200A |
| Transfer Type |
Bypass Isolation |
| Switch Type |
Contactor Based |
Ratings
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| Control Power |
100-1200A 2-, 3-, 4-pole |
| System Voltage Application |
120 - 600 Vac, 50/60 Hz |
| Withstand |
Up to 65 kAIC withstand |
| Applicable Testing |
CSA C22.2 No. 178 certified
IBC 2006, CBC 2007 and OSHPD |
Standard Equipment:
Controls And Wiring
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All controls relays and industrial grade relays are totally encapsulated to minimize exposure to dust and dirt. Lugs are 90º rated and all control wire is #16 AWG, type XLPE with a 125º temperature rating.
Enclosure
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Durable powder-coated steel NEMA 1, 3R or 12 enclosures with three door hinges to ensure proper support of the door and door mounted devices. The hinges have removable hinge pins to facilitate door removal for easy wall mounting or service and are supplied with pad-lockable latches.
Optional Equipment:
Available Options
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Space heaters
2- or 4-position test switch
Multi-meter options available
Open, closed or delayed transition
Drawout capabilities on both ATS bypass portions and power switching devices completely interchangeable between ATS and bypass units
Load sequencing contacts
Dual drawout type is field configurable for top or bottom conduit entry
Field selectable, multi ratio, control voltage transformer 50/60 Hz
Seismic Zone 4 Qualified (BOCA, CBC, IBC, UBC and OSHPD)
Remote communications
Surge suppression
Selectable automatic or non-automatic operation
Optional Delayed Transition Includes:
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Time delay neutral
Pre-transfer signal with 1 N.O. and 1 N.C. contacts
