Spec Sheet

ManualsBrandsKohler ManualsAutomaticKSS-Series 800-Amp Automatic Transfer Switch w/ MPAC 750 Controller (120/240V 3-Phase)

Automatic Transfer Switches

Standard Specific-Breaker Rated

Model KSS

G11-136 (Model KSS Transfer Switch) 3/16c Page 1

Available Controllers

D Decision-Makerr MPAC 750

D Decision-Makerr MPAC 1200

Ratings

Model Current Voltage, Frequency

KSS

40--600 amps 208--600 VAC, 50/60 Hz

800--1000 amps 208--480 VAC, 50/60 Hz

Transfer Switch Standard Features

D UL 1008 listed at 208--480 VAC

file # E58962 (automatic), # E86894 (nonautomatic)

D CSA certification available

D IBC seismic certification available

D Standard-transition operation

D Silver tungsten alloy contacts on 400--600 amp models

D Solid or switched neutral

D Available with either automatic or non-automatic control

(non-automatic control requires the Decision-Makerr

MPAC 1200 controller)

D Available in 2, 3, or 4 pole configurations

D High withstand/closing ratings, for use with specific breakers

only

D Electrically operated, mechanically held mechanism

D Double-throw, mechanically interlocked design

(break-before-make power contacts)

D Enclosed arc chambers with arc chutes

D Front-accessible contacts for easy inspection

D Main shaft auxiliary position-indicating contacts (see page 3

for contact ratings)

D Standard one-year limited warranty. Extended limited

warranties are available.

Summary of content (8 pages)

PAGE 1
Model KSS Automatic Transfer Switches Standard Specific-Breaker Rated Transfer Switch Standard Features D UL 1008 listed at 208--480 VAC file # E58962 (automatic), # E86894 (nonautomatic) D CSA certification available D IBC seismic certification available D Standard-transition operation D Silver tungsten alloy contacts on 400--600 amp models D Solid or switched neutral D Available with either automatic or non-automatic control (non-automatic control requires the Decision-Makerr MPAC 1200 controller) D Avai
PAGE 2
Available Automatic Transfer Switch Controllers Select one of the following controllers for your automatic transfer switch.
PAGE 3
Application Data Environmental Specifications Operating Temperature --20C to 70C (--4F to 158F) Storage Temperature --40C to 85C (--40F to 185F) Humidity 5% to 95% noncondensing UL-Listed Solderless Screw-Type Terminals for External Power Connections Model KSS Range of Wire Sizes, Copper or Aluminum* Switch Rating, Amps Normal, Emergency, and Load Neutral 40--150 (1) #8 to 3/0 AWG (3) #6 -- 3/0 AWG 200--225 (1) #6 AWG to 250 KCMIL 260 (1) #6 AWG to 350 KCMIL 400 (2) #2 AWG to 60
PAGE 4
Withstand and Close-On Ratings (WCR) Ratings Summary The transfer switch is rated for use on a circuit capable of delivering not more than the RMS symmetrical Amperes listed at the specified maximum voltage below, but no greater than the interrupting capacity of the selected circuit breaker or fuse. Circuit breakers and fuses are supplied by the customer.
PAGE 5
Molded-Case Circuit Breakers Switch Rating, Amps Voltage, Max. WCR, Amps RMS Manufacturer Type Eaton ITE/Siemens 260 480 35,000 General Electric Schneider Eaton 480 50,000 ITE/Siemens General Electric Schneider Eaton 400 600 42,000 ITE/Siemens General Electric Schneider Max.
PAGE 6
Molded-Case Circuit Breakers Switch Rating, Amps Voltage, Max. WCR, Amps RMS Manufacturer Type Eaton 480 50,000 ITE/Siemens General Electric Schneider Eaton 600 600 42,000 ITE/Siemens General Electric Schneider Eaton/ Cutler-Hammer 800 1000 480 65,000 Schneider/ Square D ITE/Siemens General Electric Max.
PAGE 7
Transfer Switch Accessories Accessories are available either factory-installed or as loose kits, unless otherwise noted. - CSA Certification - Seismic Certification D Certification depends on application and geographic location. Contact your distributor for details.
PAGE 8
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 Mechanism Transition Controls Voltage Poles Enclosure Current Rating Miscellaneous Record the transfer switch model designation in the boxes. The transfer switch model designation defines characteristics and ratings as explained below.