Certification Record
                    LC 1228413                
            
                    Exeltech                
            
                    2015-04-08                
            
                    Texas                
            
                    United States                
            
                    MX System and MX Stack System                
            
                    29.240.30                
            Modular Inverter System Components 
Model/Ratings:   
STS Series:  
• Rated voltage: 120VAC, 208VAC, 240VAC, 277VAC, 480VAC
• Rated current: 85A, 170A
• Rated current: 85A, 170A
Model Number designated as follows:
STATIC TRANSFER SWITCH ASSEMBLY Part Numbering System 
Model Number always starts with STS: STS (A) –(B) –(C) –(D) –(E) –(F) –(G)(G) 
(A) = Cage Size:  1=19" ; 2=23"
(B) = Phases:  1=Single Phase ; 2=Bi-Phase (180 degrees) ; 3=3-Phase (120 degrees) ; 4=2 out of 3 phase (120 degrees)
(C) = Power:  1=10KW ; 2=20KW
(D) = AC Voltage: 0=100VAC ; 1=120VAC ; 2=277VAC
(E) = AC Frequency:  5=50Hz ; 6=60Hz ; 4=400Hz
(F) = For Exeltech use only and designates current revision level
(G) = Option Code: 00=no option is required ;  or Refer to the STS controller option chart 
 Example:
- 19" Three phase 20KW 120VAC 60Hz = STS1-3-2-1-6-00
 
CSA C22.2 NO. 107.1-01 (R2011) – General Use Power Supplies
UL 1778: 2014 (Ed. 5) – Uninterruptible Power Systems   
Indoor Use Only