Model: RXT - GenSpring Power

1 G11-121 ( model RXT Automatic Transfer Switch) 9/14g Page 1 Automatic Transfer Switch100--400 AmpsModel:RXTM odel RXT Automatic Transfer SwitchThe model RXT automatic transfer switch is designed for useonly with Kohlerrgenerator sets equipped with RDC2 or DC2generator set/transfer switch controls. The transfer switchoperation is controlled by theRDC2/DC2 integrated generatorset/transfer switch FeaturesDAllows utility voltage display on the RDC2/DC2 integratedgenerator set/transfer switch controller, available exclusivelyon Kohlerrresidential and light commercial generator setsDInterface board for connection to the model RDC2 or DC2generator set/transfer switchcontroller (mounted ongenerator set models listed above)DUL listeddModels with load centers,UL 67 listed, file #E251086dModels without load centers, UL 1008 listed, file #E58962 DCSA certification, file #LR58301, is available for.

2 DStandard ATS without load center(single and three-phase)dService entrance ATS 100, 150, and 200 amp modelsDCorrosion-resistant NEMA 3R aluminum enclosuredPadlockabledApproved for indoor or outdoor installationdANSI 49 grayDNEMA 1 enclosure available on 100 amp load center modelsDContactor electrically and mechanically interlockedDDouble throw inherently interlocked designDContactor manually operable for maintenance purposesDSilver alloy main contactsDTransfer switches are 100% equipment rated and can beapplied at the rated current without derating (non-serviceentrance models)DService entrance models include disconnect circuit breakeron the utility (normal) source side (80% rated)DFive-year limited warrantyAvailable ModelsD100, 200, and 400 amp standardand service entrancemodels are and 300 amp service entrance models are also amp standard single-phase models are available with orwithout a 16-space load center.

3 Up to 8 tandem breakers canbe used for a total of 24 Amp standard single phase model with a 12-space loadcenter and a NEMA 1 enclosure is available as a standalonenon-configurable spec (GM85273-SA_).DSee page 6 for more have been removed for ( model RXT Automatic Transfer Switch) 9/14g Page 2 Optional AccessoriesThe following optional accessories are available:-Status indicator kitDLED indicators for source availability and contactorpositionDMounts on the outside of the RXT enclosureDDimensions: 92 mm x 42 mm ( in. x in.)DView transfer switch status without removing enclosurecoverDAn overhang on the enclosure protects the indicatorpanel and ribbon cable openingDFor more information on the status indicator kit, seespecification sheet G11-123-Load shed kitDAutomatically sheds non-critical loads when essentialappliances are runningDPrevents generator overload in compliance withNEC 2008 DProvides two (2) HVAC relays, rated 10 A @ 125 VAC, tocontrol two independent air conditioner loadsDIncludes four (4) pilot relays rated 120 VAC, 125VA (pilotduty), 10 A @ 125 VAC (general purpose)

4 To controlcustomer-provided Power relays for non-essential loadsDMounts inside the ATS enclosureDUses Kohler s exclusive RBUS communication protocolDRequires Kohlerrresidential generator set with RDC2 orDC2 controllerDFor more information on the load shed kit, seespecification sheet G11-124 Codes and StandardsThe ATS meets or exceeds the requirements of the followingspecifications:DUnderwriters Laboratories UL 67, Enclosed Panel Boards(load center models) file #E251086 DUnderwriters Laboratories UL 1008, Standard for AutomaticTransfer Switches for Use in Emergency Systems,file #E58962 DUnderwriters Laboratories UL 508, Standard for IndustrialControl EquipmentDCSA certification available, file #LR58301 (not available for300--400 amp service entrance or 100 amp load centermodels).

5 Must be selected when the transfer switch 70, National Electrical CodeDNFPA 110, Emergency and Standby Power SystemsDNEMA Standard IC10--1993, AC Automatic TransferSwitchesSpecificationsInterface Module SpecificationsLoad Control Contact Rating10 A @ 250 VACLoad Control Wire Size#12--18 AWGC ontroller Interface ConnectionsA and B Wire Size#20 AWG shielded twisted-pairBelden 9402 or 8723 or equivalentController Interface ConnectionsPWR and COM Wire Size#12--20 AWGE nvironmental SpecificationsOperating temperature 20_Cto70_C( 4_F to 158_F)Storage temperature 40_Cto85_C( 40_F to 185_F)Humidity5 to 95% noncondensingCable SizesAL/CU UL-Listed Solderless Screw-Type Terminals for External Power ConnectionsSwitchSize,AmpsSwitchPhasesRa nge of Wire Sizes, Cu/AlNormal and EmergencyLoadNeutralGround100 Standard1(1) #14 -- 1/0 AWG(1)#14 1/0 AWG(3) #12 to 250 KCMIL (Cu) or(3) #10 to 250 KCMIL (Al)(9)#4 14 AWGWith loadcenter1(1)#14 1/0 AWGper customer-suppliedcircuit breaker(1)#6 2/0 AWGS erviceEntrance1 Normal: (1) #12 2/0 AWGE merg: (1) #6 250 MCM(1) #6 250 MCM(3) #12 to 250 KCMIL (Cu) or(3) #10 to 250 KCMIL (Al)(3)#14 1/0 AWG3-Phase3(1)#8 3/0 AWG(1)#8 3/0 AWG(3)#6 AWG 3/0 AWG(3)#6 3/0 AWG150200 ServiceEntrance1 Normal.

6 (1) #4 300 MCME merg: (1) #6 -- 250 MCM(1)#6 AWG 250 MCM(3) #12 to 250 KCMIL (Cu) or(3) #10 to 250 KCMIL (Al)(3)#14 1/0 AWG200 Standard1(1)#6 AWG 250 MCM(1)#6 AWG 250 MCM(3) #12 to 250 KCMIL (Cu) or(3) #10 to 250 KCMIL (Al)(9)#4 14 AWG3-Phase3(1)#6 AWG 250 MCM(1)#6 AWG 250 MCM(3)#4 AWG 600 MCM(6) 1/0 250 MCM(3)#6 3/0 AWG300400 ServiceEntrance1 Normal: : (1) #1 -- 600 MCMor (2) #1 250 MCME merg: (2) #6 -- 250 MCM(2) #6 250 MCM(3) #4 600 MCM(6) 1/0 250 MCM(3)#6 3/0 AWG400 Standard1(2) #6 250 MCM(2) #6 250 MCM(3) #4 600 MCM(6) 1/0 250 MCM(3)#6 3/0 AWG3-pole208-240 V33 or 4 pole480 V3(1) #4 600 MCM(2) #6 250 MCM(1) #4 600 MCM(2) #6 250 MCMNote:Data is subject to change.

7 Refer to the transfer switch dimension drawings and wiring diagrams for planning and ( model RXT Automatic Transfer Switch) 9/14g Page 3 Withstand and Close-On Ratings (WCR)Service Entrance Transfer Switch RatingsThe service entrance transfer switch is factory-equipped with a normal source disconnect circuit for control of motors, electric discharge lamps, tungsten filament lamps andelectric heating equipment where the sum ofmotor full-load ampere ratings and the ampere ratings of other loads do not exceed the ampere rating of the switch and thetungsten load does not exceed 30 percent of switch Rating, Amps *WCR, RMS Symmetrical Amps at 240 VAC100, 150, 20022,000300, 40035.

8 000* Continuous load current not to exceed 80% of switch Ratings with Coordinated Circuit BreakersSingle-phase transfer switches are UL listed at 240 VAC maximum. Three-phase transfer switches are rated at 480 VACmaximum. The following table lists contactor withstand current ratings (WCR) for 100--400 ampere non-service entrance ratedswitches with specific manufacturer s circuit breakers per UL and Canadian safety standards. Suitable for control of motors,electric discharge lamps, tungsten filament lamps and electricheating equipment where the sum of motor full-load ampere ratingsand the ampere ratings of other loads do not exceed the ampere rating of the switch and the tungsten load does not exceed 30percent of switch transfer switch is rated for use on a circuit capable of delivering not more than the RMS symmetrical amperes maximum asshown in the tables below, but no greater than the interrupting capacity of the selected Ratings with Specific Manufacturer s Molded-Case Circuit BreakersSwitchRating,AmpsVoltage, Poles/PhasesWCR.

9 RMSS ymmetricalAmpsManufacturerType or ClassMaximumSize, Amps1002402 pole/1 phase10,000 Eaton/Cutler-HammerFCL,FB,QCHW,GB,GHB,GC ,GHC,GD,EHD100 FDB, FD, HFD, FDC, CA, CAH150 Square DFI,FC,FA,FH100 QOM1, QOM1--VH125Q2, , QOM2--VH225QB, QD, QG, GJ250 SiemensCED6, ED2, ED4, ED6, HED4, HED6, QP(Q2125),QPH(Q2125H)125QJ2, QJH2150 GETHQB, THQC, THHQB, THHQC100 THHQL, TQDL, THQDL125SE, TQD, THQD, THED1501502002402 pole/1 phase10,000 Eaton/Cutler-HammerCSR/BHW, FD, HFD225JD,JDB,HJD225--250 JDC250DK, KD, KDB, HKD, KDC, LCL, LA400 Square DQ2. QOM2, QOM2--VH, Q2--H, Q2H225KI, KA, KH, KC, QB, QD, QG, QJ250LE, LX, LXI, LC, LI, LA, LH400 SiemensFD6-A, FXD6-A, HFD6, CFD6250 GETQDL, THQDL125 THLC2225SF250G11-121 ( model RXT Automatic Transfer Switch)

10 9/14g Page 4 WCR Ratings with Specific Manufacturer s Molded-Case Circuit BreakersSwitchRating,AmpsVoltage, Poles/PhasesWCR, RMSS ymmetricalAmpsManufacturerType or ClassMaximumSize, Amps1002004803 pole/3 phase4 pole/3 phase30,000 Cutler-HammerFDC, HFD150 HJD, JDC250 HKD, KD, KDB, KDC, LA TRI--PAC, LCL400 Square DFC, FI100KC, KH, KI250LA, LC, LE, LH, LI, LX, LXI400 ITE/SiemensCED6, HED4, HED6125 CFD6, FD6, FXD6, HFD6250 CJD6, HJD6, HHJD6, HHJXD6, JD6, JXD6,SCJD6, SHJD6, SJD6400 GETB1100 SEL, SEP, TEL, THLC1150 TFL, THLC2225 SFL, SFP250 SGL4, SGP4, TB4, THJK4, THLC4, TJJ, TJK4,TLB44003004002401 phase3 pole/3 phase50,000 Cutler-HammerLD, LDB, HLD, LDC, CLD, CHLD, CLDC600 MDL, HMDL, NB800 Square DLC, LI, LE, LX, LXI, DG, DJ, DL600 ITE/SiemensLD, LXD, HLD, HLXD, HHLD, HHLXD, CLD,NLGA, HLGA, LLGA, SLD, SHLD, SCLD600 LMD, LMXD, HLMD, HLMXD, MD, MXD, HMD,HMXD,CMD,NMG,HMG,LMG,SMD,SHMD,SCMD80 0 GESGHA,FGN,FGL,FGP600 Merlin GerinCJ600N, CJ600H600 ABBT5, T66003004002401 phase3 pole/3 phase50,000If any of the following breakers is selected for application, the continuous loadcurrent must not exceed 80 percent of the switch rating.