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Other Range of Transfer Switches ZTSD ZTG ZTGD ZTX
The GE Zenith Controls ZTS Series of transfer switches-the building block of our transfer switch product line-has become a hallmark of quality and performance. This ruggedly built power contactor family of switches is available in open construction for switchboard installation or NEMA enclosed to your specifications. They are specifically designed with dependability, versatility and user friendliness as top priorities.
The power panel components, which include power switching contacts,drive mechanism and terminal lugs, are mounted on a specially formed panel for optimum performance. Logic devices such as microprocessor control, auxiliary time delays and special accessory equipment are mounted on the door for ease of maintenance and to keep them separated from the power section. They are connected with a numbered wiring harness equipped with a disconnect plug that allows the control panel to be isolated for maintenance.
Electrical Ratings
- Ratings 40 to 4000 amperes
- 2, 3 or 4 poles
- Open type, NEMA 1, 3R, 4, 4X and 12
- Available to 600 VAC, 50 or 60 Hz
- Suitable for emergency and standby applications on all classes of load, 100% tungsten rated through 400 amps
- UL 1008 listed at 480 VAC
- CSA C22.2 No. 178 certified at 600 VAC
- IEC 947-6-1 certified at 480 VAC
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?2014exceeds UL requirements
- Available in ZTS (utility-generator), ZTSU (utility-utility), ZTSG (generator-generator) and ZTSM (manual) configurations
Design and Construction Features
- Double-throw, interlocked operation
- Electrically operated, mechanically held by a simple, over-center mechanism
- Segmented silver tungsten alloy contacts with separate arcing contacts on 600 amps 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 power conductors
- Mechanical indicator and contact chamber cover designed for inspection, safety and position designation
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