CTS Series Automatic Transfer Switch

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Specifications

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Overview

The Cat® CTS Series Automatic Transfer Switch(ATS)is configurable for applications requiring the dependability and ease of operation found in a full featured power contactor type transfer switch.
The CTS Series is equipped with the MX250 controller that is designed for the most demanding transfer or bypass switch applications.

Technical Summary

Rating Range 40 to 4000A 40 to 4000A
Transfer Type Open transition Open transition
Switch Type Contactor Based Contactor Based

Electrical Ratings

Control Power 40 to 4000 amperes, 2, 3 or 4 Poles 40 to 4000 amperes, 2, 3 or 4 Poles
Enclosure Capability NEMA 1, 3R, 4, 4X and 12 NEMA 1, 3R, 4, 4X and 12
System Voltage Application Available to 600 VAC, 50 or 60 Hz Available to 600 VAC, 50 or 60 Hz
Applicable Testing UL 1008 listed at 480 VAC
CSA C22.2 No. 178 certified at 600 VAC
IEC 947-6-1 listed through 480 VAC UL 1008 listed at 480 VAC
CSA C22.2 No. 178 certified at 600 VAC
IEC 947-6-1 listed through 480 VAC

Benefits & Features

Performance Features

Contact transfer speed less than 100 milliseconds
High close-in and withstand capability
Temperature rise test per UL 1008 conducted after overload and endurance tests in unventilated enclosure – exceeds UL requirements
Equipped with the MX250 Control Package

Design and Construction Features

Double throw, interlocked operation
Electrically operated, mechanically held by a simple, over-center mechanism
Silver alloy contacts with separate arcing contacts on 600 amp and above
Arc quenching grids, enclosed arc chambers, and wide contact air gap for superior source to- source isolation on all units
Control circuit disconnect plug and drive inhibit switch for safe maintenance
Components accessible for inspection and maintenance without removal of the switch or the power conductors
Mechanical indicator and contact chamber cover designed for inspection, safety and position designation