Specifications Sheet

ManualsBrandsKohler ManualsGenerator AccessoryKohler RXT 100A / 240V Outdoor Transfer Switch

G11-140 (Model RXT Automatic Transfer Switch) 4/16d Page 1

Automatic Transfer Switch

100--400 Amps

Model: RXT

Model RXT Automatic Transfer Switch

The Model RXT automatic transfer switch is designed for use

only with Kohlerr generator sets equipped with RDC2 or DC2

generator set/transfer switch controls. The transfer switch

operation is controlled by the RDC2/DC2 controller.

Standard Features

D Allows utility voltage display on the RDC2/DC2 generator

set/transfer switch controller, available exclusively on Kohlerr

residential and light commercial generator sets

D UL listed

d Models with load centers, UL 67 listed, file # E251086

d Models without load centers, UL 1008 listed, file # E58962

D CSA certification, file # LR58301, is available for:

d Standard ATS without load center (single and three-phase)

d Service entrance ATS 100 and 200 amp models

D Corrosion-resistant NEMA 3R aluminum enclosure

d Padlockable

d Approved for indoor or outdoor installation

d ANSI 49 gray

D NEMA 1 enclosure available on 100 amp load center models

D Contactor electrically and mechanically interlocked

D Double throw inherently interlocked design

D Contactor manually operable for maintenance purposes

D Silver alloy main contacts

D Transfer switches are 100% equipment rated and can be

applied at the rated current without derating (non-service

entrance models)

D Service entrance models include disconnect circuit breaker

on the utility (normal) source side (80% rated)

D Five-year limited warranty

Standard Interface Board

D Standard interface board connects to the Model RDC2 or

DC2 generator set/transfer switch controller.

D Includes a load control contact that provides a 5 minute time

delay for startup of selected loads after transfer to the

emergency source. Use for large motor loads.

Combined Interface/ Load

Management Board

D Optional combined interface/ load management board

replaces the standard interface board and connects to the

Model RDC2 or DC2 generator set/transfer switch controller.

D The combined board is available on single-phase standard

and service entrance models.

(Not available on 3-phase or load center models.)

D The combined board automatically manages up to six

residential loads:

d Up to four customer-supplied power relay modules can

be connected for management of non-essential

secondary loads.

d Two HVAC relays are included for control of two

independent air conditioner loads.

Covers have been removed for illustration.

Available Models

D 100, 200, and 400 amp standard and service

entrance models are available.

D 150 and 300 amp service entrance models are also

available.

D Combined interface/ load management board is

available on single-phase standard and service

entrance models. (Not available on 3-phase or load

center models.)

D 100 amp standard single-phase models are available

with or without a 16-space load center. Up to 8

tandem breakers can be used for a total of 24

circuits.

D 100amp standard single phase model with a

12-space load center and a NEMA 1 enclosure is

available as a standalone non-configurable spec

(GM85273-SA_).

D See page 7 for more information.

Summary of content (8 pages)

PAGE 1
Model: RXT Automatic Transfer Switch 100--400 Amps Model RXT Automatic Transfer Switch The Model RXT automatic transfer switch is designed for use only with Kohlerr generator sets equipped with RDC2 or DC2 generator set/transfer switch controls. The transfer switch operation is controlled by the RDC2/DC2 controller.
PAGE 2
Specifications Codes and Standards The ATS meets or exceeds the requirements of the following specifications: Standard Interface Board Controller interface connections A and B Controller interface connections PWR and COM Load control contact rating Load control connections #20 AWG shielded twisted-pair Belden 9402 or 8762 or equivalent #12--20 AWG (see ATS Installation Manual) 10 A @ 250 VAC #12--18 AWG Note: For combined interface/load management board specifications, see page 3.
PAGE 3
Optional Combined Interface/Load Management Board The RXT transfer switch is available with either a standard interface board or a combined interface/ load management board. The combined board allows load management as described below. Load Management D The combined load management board disconnects non-critical loads to prevent generator overload, in compliance with NEC. D The combined load management board monitors generator current and frequency to determine when to add or shed loads.
PAGE 4
Withstand and Close-On Ratings (WCR) Service Entrance Transfer Switch Ratings The service entrance transfer switch is factory-equipped with a normal source disconnect circuit breaker. Suitable for the control of motors, electric discharge lamps, tungsten filament lamps and electric heating equipment where the sum of motor full-load ampere ratings and the ampere ratings of other loads do not exceed the ampere rating of the switch and the tungsten load does not exceed 30 percent of switch rating.
PAGE 5
WCR Ratings with Specific Manufacturer’s Molded-Case Circuit Breakers Switch Rating, Amps Voltage, max.
PAGE 6
Dimensions and Weights Note: Always use the transfer switch dimension drawing for planning and installation. Weights and dimensions may vary for different configurations. See the Operation/Installation Manual or your local distributor for dimension drawings. Transfer switch weights and dimensions shown in the table do not include packaging. To estimate the shipping weight, add 3 kg (5 lbs.) or 10% (whichever is larger) to the weight shown.
PAGE 7
Accessories - Power relay modules D 50 amp DPST power relay mounted in a NEMA type 3R enclosure D Use up to four modules with the combined interface/ load management board D UL/cUL listed D Dimensions: 172 x 233 x 92 mm (6.8 x 9.2 x 3.6 in.
PAGE 8
Kohler Power Systems Asia Pacific Headquarters 7 Jurong Pier Road Singapore 619159 Phone (65) 6264-6422, Fax (65) 6264-6455 KOHLER CO., Kohler, Wisconsin 53044 USA Phone 920-457-4441, Fax 920-459-1646 For the nearest sales and service outlet in the US and Canada, phone 1-800-544-2444 KOHLERPower.com Model Designation Model Controls Voltage Poles Enclosure Current Rating Connections Record the transfer switch model designation in the boxes.