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Model:RXTAutomatic Transfer Switch100--400 AmpsModel RXT Automatic Transfer SwitchThe Model RXT automatic transfer switch is designed for useonly with Kohlerr generator sets equipped with RDC2 or DC2generator set/transfer switch controls. The transfer switchoperation is controlled by the RDC2/DC2 integrated generatorset/transfer switch controller, which is mounted on the followingKohlerr generator set models:d 14RESA/RESALd 20RESA/RESALd 48RCLStandard FeaturesD Allows utility voltage display on the RDC2/DC2 integratedgenerator set/transfer switch controller, available exclusivelyon Kohlerr residential and light commercial generator setsD Interface board for connection to the Model RDC2 or DC2generator set/transfer switch controller (mounted ongenerator set models listed above)D UL listedd Models with load centers, UL 67 listed, file # E251086d Models without load centers, UL 1008 listed, file # E58962D CSA certified, file # LR58301 (not applicable to serviceentrance or load center models)D Corrosion-resistant NEMA 3R aluminum enclosure:d Padlockabled Approved for indoor or outdoor installationd ANSI 49 grayD Contactor electrically and mechanically interlockedD Double throw inherently interlocked designD Contactor manually operable for maintenance purposesD Silver alloy main contactsD Transfer switches are 100% equipment rated and can beapplied at the rated current without derating (non-serviceentrance models)D 100, 200, and 400 amp standard and service entrancemodels are available; see page 6 for available modelsD 100 amp standard single-phase models are available with orwithout 16-space load center. Up to 8 tandem breakers canbe used for a total of 24 circuits.D Service entrance models include disconnect circuit breakeron the utility (normal) source side (80% rated)D Five-year limited warrantyD Optional status indicator available:d LED indicators for source availability and contactorpositiond View transfer switch status without removing enclosurecoverG11-121 (Model RXT Automatic Transfer Switch) 6/12aPage 1

Codes and StandardsThe ATS meets or exceeds the requirements of the following specifications:D Underwriters Laboratories UL 67, Enclosed Panel BoardsD CSA certified, file # LR58301 (not applicable to service(load center models) file # E251086entrance or load center models)D Underwriters Laboratories UL 1008, Standard for AutomaticD NFPA 70, National Electrical CodeTransfer Switches for Use in Emergency Systems,D NFPA 110, Emergency and Standby Power Systemsfile # E58962D NEMA Standard IC10--1993, AC Automatic TransferD Underwriters Laboratories UL 508, Standard for IndustrialSwitchesControl EquipmentSpecificationsEnvironmental Specifications 20 C to 70 C ( 4 F to 158 F)Load Control Contact Rating 40 C to 85 C ( 40 F to 185 F)Load Control Wire SizeOperating temperatureStorage temperatureInterface Module SpecificationsHumidity5 to 95% noncondensing10 A @ 250 VAC#12--18 AWGController Interface ConnectionsA and B Wire Size#20 AWG shielded twisted-pairBelden 9402 or 8723 or equivalentController Interface ConnectionsPWR and COM Wire Size#12--20 AWGCable SizesAL/CU UL-Listed Solderless Screw-Type Terminals for External Power ConnectionsSwitchSize,Amps100200400Range of Wire Sizes, Cu/AlSwitchPhasesNormal and EmergencyLoadNeutralGroundStandard1(1) #14 -- 1/0 AWG(1) #14 – 1/0 AWG(3) #12 – 1/0 AWG(9) #4 – 14 AWG(1) #6 – 2/0 AWG(9) #4 – 14 AWGWith loadcenter1(1) #14 – 1/0 AWGper customer-suppliedcircuit breakerServiceEntrance1Normal: (1) #12 – 2/0 AWGEmerg: (1) #6 – 250 MCM(1) #6 – 250 MCM(3) #6 – 250 MCM(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 AWGStandard1(1) #6 AWG – 250 MCM(1) #6 AWG – 250 MCM(3) #6 AWG – 250 MCM(9) #4 – 14 AWGServiceEntrance1Normal: (1) #4 – 300 MCMEmerg: (1) #6 -- 250 MCM(1) #6 AWG – 250 MCM(3) #6 AWG – 250 MCM(3) #14 – 1/0 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 AWGStandard(3) #4 – 600 MCM(6) 1/0 – 250 MCM(3) #6 – 3/0 AWG1(2) #6 – 250 MCM(2) #6 – 250 MCMServiceEntrance1Normal: (2) 3/0 – 250 MCMEmerg: (2) #6 -- 250 MCM(2) #6 – 250 MCM3-pole208-240 V3(2) #6 – 250 MCM(2) #6 – 250 MCM3 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. Refer to the transfer switch dimension drawings and wiring diagrams for planning and installation.G11-121 (Model RXT Automatic Transfer Switch) 6/12aPage 2

Withstand and Close-On Ratings (WCR)Service Entrance Transfer Switch RatingsThe service entrance transfer switch is factory-equipped with a normal source disconnect circuit breaker.Suitable for control of motors, electric discharge lamps, tungsten filament lamps and electric 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.Switch Rating, AmpsWCR, RMS Symmetrical Amps at 240 VAC100 *22,000200 *400 *35,000* Continuous load current not to exceed 80% of switch rating.Contactor 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 electric heating 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 rating.The 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 breaker.WCR Ratings with Specific Manufacturer’s Molded-Case Circuit BreakersSwitchRating,AmpsVoltage,max.Numberof Poles/PhasesWCR, quare D1002402 pole/1 phase10,000SiemensGEType or ClassFCL, FB, QCHW, GB, GHB, GC, GHC, GD, EHD100FDB, FD, HFD, FDC, CA, CAH150FI, FC, FA, FH100QOM1, QOM1--VH125Q2, Q2--H. Q2H175QOM2, QOM2--VH225QB, QD, QG, GJ250CED6, ED2, ED4, ED6, HED4, HED6, QP(Q2125),QPH(Q2125H)125QJ2, QJH2150THQB, THQC, THHQB, THHQC100THHQL, TQDL, THQDL125SE, TQD, THQD, THED150CSR/BHW, FD, HFDEaton/Cutler-Hammer2002402 pole/1 phase10,000Square DSiemensGEMaximumSize, AmpsJD, JDB, HJD225225--250JDC250DK, KD, KDB, HKD, KDC, LCL, LA400Q2. QOM2, QOM2--VH, Q2--H, Q2H225KI, KA, KH, KC, QB, QD, QG, QJ250LE, LX, LXI, LC, LI, LA, LH400FD6-A, FXD6-A, HFD6, CFD6250TQDL, THQDL125THLC2225SF250G11-121 (Model RXT Automatic Transfer Switch) 6/12aPage 3

WCR Ratings with Specific Manufacturer’s Molded-Case Circuit BreakersSwitchRating,AmpsVoltage,max.Numberof Poles/PhasesWCR, RMSSymmetricalAmpsManufacturer150HJD, JDC250HKD, KD, KDB, KDC, LA TRI--PAC, LCL400FC, FI100KC, KH, KI250LA, LC, LE, LH, LI, LX, LXI400CED6, HED4, HED6125CFD6, FD6, FXD6, HFD6250CJD6, HJD6, HHJD6, HHJXD6, JD6, JXD6,SCJD6, SHJD6, SJD6400TB1100SEL, SEP, TEL, THLC1150TFL, THLC2225SFL, SFP250SGL4, SGP4, TB4, THJK4, THLC4, TJJ, TJK4,TLB4400LD, LDB, HLD, LDC, CLD, CHLD, CLDC600MDL, HMDL, NB800LC, LI, LE, LX, LXI, DG, DJ, DL600LD, LXD, HLD, HLXD, HHLD, HHLXD, CLD,NLGA, HLGA, LLGA, SLD, SHLD, SCLD600LMD, LMXD, HLMD, HLMXD, MD, MXD, HMD,HMXD, CMD, NMG, HMG, LMG, SMD, SHMD,SCMD800GESGHA, FGN, FGL, FGP600Merlin GerinCJ600N, CJ600H600ABBT5, T6600Square D2003 pole/3 phase48030,000ITE/Siemens4 pole/3 phaseGECutler-HammerSquare D1 phase40024050,000MaximumSize, AmpsFDC, HFDCutler-Hammer100Type or ClassITE/Siemens3 pole/3 phaseIf any of the following breakers is selected for application, the continuous loadcurrent must not exceed 80 percent of the switch rating:1 phase40024050,0003 pole/3 phaseCutler-HammerDK, KDB, KD, CKD, HKD, CHKD, KDC, LCL,LA TRIPAC400Square DLA, LH, LC, LI, LE, LX, LXI400ITE/SiemensNJGA, HJGA, LJGA, JXD2, JD6, JXD6, HJD6,HJXD6, HHJD6, HHJXD6, CJD6, SJD6, SHJD6,SCJD6400Merlin GerinCJ400N, CJ400H, CJ400L400G11-121 (Model RXT Automatic Transfer Switch) 6/12aPage 4

WCR Ratings with Specific Manufacturer’s Molded-Case Circuit BreakersSwitchRating,AmpsVoltage,max.Numberof Poles/PhasesWCR, RMSSymmetricalAmpsManufacturerMaximumSize, AmpsType or ClassHJD, JDCCutler-HammerSquare D3 pole/3 phase400480ITE/Siemens50,0004 pole/3 phaseGEMerlin Gerin250HKD, CHKD, KDC, LCL, LA TRIPAC400HLD, CHLD, LDC, CLDC300--600NB TRI--PAC300--800KI, KC250LI, LXI, LX, LE, LC600MX, ME, MH800CFD6, HFD6250CJD6, SCJD6, HHJD6, HHJXD6, SHJD6, HJD6400CLD6, SCLD6, HHLD6, HHLXD6, SHLD6, HLD6600CMD6, SCMD6, HMD6, SHMD6, HMXD6, MD6,MXD6, SMD6800SFL, SFP, TFL, THLC2250SGL4, SGP4, TB4, THLC4, TLB4400SGL6, SGP6, TB6, TJL4V, TKL4V, TJL1S--6S600SKL8, SKP8, TB8, SKH8800CF250L, CF250H250CJ400L, CK400H, CJ400H, CK400N400CJ600H600CK800H, CK800N800Dimensions and WeightsHWD*Shipping Weight [Amps100200400DescriptionDimensions, H x W x D, mm (in.) *kg(lb.)(15)Single phase620 x 335 x 180(24.4 x 13.2 x 7.1)7With load center620 x 335 x 180(24.4 x 13.2 x 7.1)9(20)Three phase679 x 462 x 228(26.7 x 18.2 x 9.0)15(34)Service Entrance731 x 416 x 175(28.8 x 16.4 x 6.9)12(26)Single phase620 x 335 x 180(24.4 x 13.2 x 7.1)8(17)Three phase679 x 462 x 228(26.7 x 18.2 x 9.0)16(35)Service Entrance731 x 416 x 175(28.8 x 16.4 x 6.9)14(30)Single phase1067 x 559 x 329(42.0 x 22.0 x 12.9)50(110)3-Pole/208--240 Volts1067 x 559 x 329(42.0 x 22.0 x 12.9)54(120)3-Pole/480 Volts1222 x 610 x 343(48.1 x 24.0 x 13.5)68(150)4-Pole1222 x 610 x 343(48.1 x 24.0 x 13.5)73(160)Service Entrance1067 x 559 x 329(42.0 x 22.0 x 12.9)59(130)* Depth does not include the padlock hasp on the front of the enclosure.[ Shipping weights are approximate and include packaging.G11-121 (Model RXT Automatic Transfer Switch) 6/12aPage 5