• Open or closed transition switching
• Single- and dual-operator models
• 2-, 3-, and 4-pole configurations 
• Simple electrical operator
• Rapid arc quenching
• Front accessible wiring
• Advanced microprocessor-based control system manages all of the operational functions of the automatic transfer switch, including both standard and user-specified optional accessories  
• UL listed through 4000 amperes
• IEC certified
• SCADA capable

CONTROLS

• Standard on all Russelectric automatic transfer switches and bypass/isolation switches, this microprocessor-based system controls all operational functions of the automatic transfer switch, including standard accessories and user-specified optional accessories. 
• Senses normal and emergency source voltages; indicates ATS position and CPU operation
• Provides 3-phase over/under voltage, over/under frequency, phase sequence detection, and phase differential monitoring for both normal and emergency sources
• Controller uses industry-standard open-architecture communications protocol for high-speed serial communications via multidrop connection to other controllers and to master terminal 
• All control setup information, programs, and calibration data are stored in the unit's nonvolatile memory and saved in the event of a control power interruption
• Rechargeable NiCad battery provide 5 VDC power to the controller during the engine start timing cycle when no AC or DC power is available
• Self-diagnostics perform periodic checks of the memory, I/O and communications systems; invoke a software reset if error is detected
• Watchdog timer circuit invokes hardware reset if program execution exceeds 1.6 seconds 
• Accessory Setup and Services screen allows accessory installation and changes to system setup, calibration, and diagnostic functions

Model 2000 Controls   

Model 2000 Plus Controls   

OPEN TRANSITION SWITCHES

• Open transition switches have quick-break, quick-make, high speed transfer mechanism
• Positive mechanical interlocking
• Safe manual operator

Single Operator ATS   

Dual Operator ATS   

CLOSED TRANSITION SWITCHES

• Multilevel electrical interlocking
• Selector switch allows open or closed transition switching

Dual Operator Closed Transition ATS   

BYPASS / ISOLATION SWITCHES

• Combines all the functions of an automatic transfer switch with the ability to bypass power from the live source to load (if the ATS becomes disabled)
• Allows ATS to be isolated and deenergized for maintenance, repair, or testing
• Bypass switch and transfer switch are identical devices with identical construction and electrical ratings
• True drawout construction allows easy, safe removal of transfer switch without the need for electrical or mechanical operation
• One- or two-source configurations
• Overlapping load bypass version -- allows bypass with no load
• Load-break bypass version -- protects against accidental short circuiting of power sources and features fully mechanical operation.
• Closed transition automatic transfer operation switches feature overlapping load bypass

Bypass / Isolation No Break ATS   

Bypass / Isolation Load Break ATS   

Bypass / Isolation Closed Transition ATS   

MEDIUM VOLTAGE TRANSFER SWITCHES

• High-speed open transition transfer of electrical loads from normal to emergency source upon a reduction or loss of voltage and retransfer of load when normal power is restored
• First UL listed medium voltage transfer switch
• 3-pole construction
• Adjustable center-off time delay is factory preset to a default of 3 seconds but can be reset in the field via the front panel display and keypad
• Center-off positioning is ideal for sophisticated load shed control schemes and prevents latch-up of SCR power devices during transfer between asynchronous power sources
• Electromagnetic linear actuators provide reliable, trouble-free operation
• Innovative proprietary lifetime arc suppression system minimizes effects of arcing. 
 
• Isolated with high dielectric polyester glass insulation throughout
• Control components and wiring can be replaced without removing the transfer switch from its enclosure

Medium Voltage ATS