Technical Specifications
2 of 2
Dimensions and Wire Ranges
®
Generac Power Systems, Inc. • S45 W29290 HWY. 59, Waukesha, WI 53189 • generac.com
©2012 Generac Power Systems, Inc.  All rights reserved. All specifications are subject to change without notice. Bulletin 0186640SBY-F Printed in U.S.A. 12/06/12
100 Amps  EZ Switch™
®
Functions
Specifications
Features
• Electrically operated, mechanically-held contacts for fast, positive connections.
• Rated for all classes of load, 100% equipment rated, both inductive and resistive.
• 2 pole, 250 VAC contactors.
• 160 millisecond transfer time.
• Dual coil design.
• Main contacts are silver plated or silver alloy to resist welding and sticking.
• NEMA 1 (indoor rated) enclosure is standard on the 100 amp switch.
• 2 Year Limited Warranty.
All Timing and sensing functions originate in the generator controller.
  Utility voltage drop-out ......................................................................................................................................................................................................................<60%
  Timer to generator start ...................................................................................................................................... 10 second factory set, adjustable between 10-30 seconds
  Engine warm up delay ................................................................................................................................................................................................................. 5 seconds
  Standby voltage sensor ..................................................................................................................................................................................................60% for 5 seconds
  Utility voltage pickup .........................................................................................................................................................................................................................>80%
  Re-transfer time delay ...............................................................................................................................................................................................................15 seconds
  Engine cool-down timer ............................................................................................................................................................................................................60 seconds
 Exerciser  .............................................................................................................................................................................................................. 12 minutes every 7 days
  The transfer switch can be operated manually without power applied.
Model RTS10EZA1 RTS12EZA1 RTS14EZA1 RTS16EZA1
Voltage 240, 1ø 240, 1ø 240, 1ø 240, 1ø
Circuits,  50A, 240V – – – 1
  40A, 240V – 1 1 1
  30A, 240V 1 1 – –
  20A, 240V 1 – 1 1
  20A, 120V 3 3 6 5
  15A, 120V 3 5 4 5
Phase 1
Rated AC Frequency 60 Hz
Enclosure Material Steel
Enclosure Type NEMA 1
Withstand Rating (Amps) 10,000
Lug Range 2/0 - #14
Load Transition Type Open Transition
Wire Gauge (Hot, Neutral, Ground, Control) 10, 10, 10, 18 8, 8, 10, 18 6, 6, 8, 18 6, 6, 8, 18
Mechanical Dimensions (in inches/mm)
Model RTS10EZA1 RTS12EZA1 RTS14EZA1 RTS16EZA1
Height 
(in./mm)
H1 26.5/673.1
H2 29.25/743
Width 
(in./mm)
W1 8.14/206.8
W2 12.5/317.5
Depth (in./mm) 7/177.8
Weight (lbs./kilos) 57/25.85 60.8/27.58 64/29.03 68/30.84
Terminal Wire Ranges
ATS Rated Amps Switch Terminal Neutral Lug/Stud Ground Lug
100A 2-Pole UL 1 x 1/0-12 1 x 3/8-16 Stud 1 x 2/0-14
731.9
[28.8]
637.6
[25.1]
LEFT SIDE VIEW
642
[25.3]
76.2 [3.0]
PEA GRAVEL
MINIMUM
TRANSFER 
SWITCH
8KW - 17KW
(IF SUPPLIED)
TRANSFER 
SWITCH
20KW
(IF SUPPLIED)
1218
[47.9]
FRONT VIEW
1226
[48.3]
H2
H1
W1
W2
H2
H1
W1
W2
®
EZ Switch™ 


