CTG Series Automatic Transfer Switch

View Specs Gallery

CTG Series Automatic Transfer Switch
Change model

Change model

Find Dealer

Request A Price

Overview

The Cat® CTG Series Automatic Transfer Switches (ATS) are pre-configured for applications requiring the dependability and ease of operation found in a full feature power contactor type transfer switch.
CTG switches are equipped with the next generation MX150 microprocessor panel, which controls the operation and displays the status of the transfer switch's position, timers and available sources. As an embedded digital controller, the MX150 offers high reliability and ease of unattended operation across a range of applications.

MX150 Controller

with non-volatile memory-clock battery backup not required for standard switch operation

The Catï¿½ CTG Serie Automatic Transfer Switches (ATS)

are pre-configured for applications requiring the dependability and ease of operation found in a full feature power contactor type transfer switch

Features At A Glance

Features

Ratings 40 to 3000 amps (2, 3 or 4 poles)
UL 1008 listed at 480 VAC
CSA certified at 600 VAC (200-225 amp - 480V)
IEC listed at 480 V
Double throw, mechanically interlocked contactor mechanism
Electrically operated, mechanically held
Designed for emergency and standby applications
Available in standard open transition (CTG)or delayed transition (CTGD) models
Ringing wave immunity per IEEE 472 (ANSI C37.90A
Conducted and Radiated Emissions per EN55022 Class B (CISPR 11) (Exceeds EN55011 & MILSTD 461 Class 3)
ESD immunity test per EN61000-4-2 (Level 4)
Radiated RF, electromagnetic field immunity test per EN61000-4-3 (ENV50140) 10v/m
Electrical fast transient/burst immunity test per EN61000-4-4
Radiated RF, electromagnetic field immunity
Surge immunity test per EN61000-4-5 IEEE C62.41 (1.2 X 50 ms, 5 & 8 kV)
Conducted immunity test per EN61000-4-6 (ENV50141)
Voltage dips and interruption immunity EN61000-4-11
Seismic Compliance to IEEE-693-2005 and IBC-2003

Design and Construction Features

Close differential 3 phase under-voltage sensing of the normal source - factory standard setting 90% pickup, 80% dropout (adjustable);under frequency sensing of the normal source factory setting 95% pickup (adjustable)
Voltage and frequency sensing of the emergency source - factory standard setting 90% pickup voltage, 95% pickup frequency (adjustable)
Test switch (fast test/load/no load) to simulate normal source failure - automatically bypassed should the emergency source fail
Type 1 enclosure is standard - also available in open style or Types 3R, 4, 4X, or 12

Full Specifications Standard Equipment Optional Equipment

Product Specifications for CTG Series Automatic Transfer Switch

Download Print

US
Metric

Technical Summary

Transfer Type	Open transition Open transition
Rating Range	40-3000A 40-3000A
Switch Type	Contactor based Contactor based

CTG Series Automatic Transfer Switch Standard Equipment

Standard Features

Auxiliary Contact:
Closed when the switch is in the normal position
(Additional contacts optional)

Time Delay to Engine Start: Standard setting 3 seconds, adjustable 0-10 seconds

Peak Shave/Remote Load Test: Input for peak shave or remote load test; includes automatic return to normal if emergency source fails and normal is present; 120 VAC

Indicating LED Pilot Lights:
-Switch in emergency position
-Switch in normal position
- Normal source available
-Emergency source available

When specified for use with a CTGD Series delayed transition switch, the control panel also includes the following:

Event Log OD 16 Event that track date, time, reason and action taken

Time Delay on Retransfer to Normal: To delay retransfer to normal source (immediate retransfer on generator set failure); standard setting 30 minutes, adjustable 0-60 minutes

7, 14, 28 day interval timed exerciser, pushbutton/timer operation

Test Switch - Momentary

In-Phase Monitor, self-adjusting (Not available on CTGD models)

Auxiliary Contact:
Closed when the switch is in the emergency position
(Additional contacts optional)

Push button Bypass of time delay and normal emergency

Voltage and Frequency Indication for S1 and S2

Engine Start Contact

MX150 Control Panel

LED/LCD indicators for ease of viewing and long life

Time Delay for Engine Cool Down: Allows engine to run unloaded after switch retransfer to normal; standard setting 5 minutes, adjustable 0-60 minutes

Inputs opto-isolated for high electrical immunity to transients and noise

Built-in diagnostics with LCD display for immediate troubleshooting

Nonvolatile memory (exerciser battery backup not required for standard operation)

Processor and digital circuitry isolated from line voltage

Communications header for network interface

Time Delay on Transfer to Emergency: To delay transfer to emergency after verifying emergency source available; standard setting 1 second, adjustable 0-5 minutes

Timer and voltage/frequency settings adjustable without disconnection from power sources

CTG Series Automatic Transfer Switch Optional Equipment

Options

Service entrance configuration

Auxiliary Contacts: Closed when the transfer switch is in Source 1 position

Elevator Pre-Signal Auxiliary Contacts: Open 0-60 seconds prior to transfer to either direction, re-closes after transfer

Space heater and thermostat

Auxiliary Contact, operates on Source 1 line failure

Note:For applications requiring additional options or other configurations, see the CTS Series fully configurable transfer switch.

Auxiliary Contact, operates on Source 2 availability

Plant Exerciser, clock type (load/no load): Allows the generator to start and run unloaded or to simulate a power failure, start generator and run under load (7-14-28-365 days, user selectable)

Network communications interface card (LonWorks / ModBus)

Universal Motor Load Disconnect Circuit: Auxiliary Contact opens 0-60 seconds prior to transfer in either direction, re-closes after transfer. Can be configured by end user for Pre-transfer, Post-transfer, or both.

Auxiliary Contacts: Closed when the transfer switch is in Source 2 position

Power Measurement Meters

Maintained Test Switch

Disconnect Switch: Permits transfer in “AUTO” position and inhibits transfer in “INHIBIT” position. (Standard 800A and above)

Lockable, see-through cover for ATS controller

Voltage Imbalance Monitor (Three Phase)

Maintained Test Switch w/Keypad

See how CTG Series Automatic Transfer Switch compares against frequently compared products.

US
Metric

Electric Power CTG Series Automatic Transfer Switch

Transfer Type: Open transition; Open transition
Rating Range: 40-3000A; 40-3000A
Switch Type: Contactor based; Contactor based

Selected Model

Electric Power CTE Series Automatic Transfer Switch

Rating Range: 40-4000A; 40-4000A
Transfer Type: Open / Closed / 4 position switch; Open / Closed / 4 position switch
Switch Type: Contactor Based; Contactor Based

Model Details

Electric Power CTGSE & CTGDSE Series Service Rated Entrance Rated ATS

Switch Type: Contactor Based; Contactor Based
Transfer Type: Open Transition with Service Entrance; Open Transition with Service Entrance
Rating Range: 40-3000A; 40-3000A

Model Details

Tools And Expert Help At Every Turn

Payment Calculator

Current Offers

Rental Options

Find Dealer

Cat Connect: Get More from Every Asset

Now there's an easier way to track and manage your equipment anytime, anywhere.

Learn More

SpecSizer

Calculate what generator size you need by using our commercial and industrial generator sizing calculator, SpecSizer.

Learn More

Customer Value Agreements

Every piece of Cat equipment is designed and built to provide maximum productivity and operating economy throughout its working life. Your Cat dealer can help you maintain that built-in value through a Customer Value Agreement (CVA).

Learn More

Custom Power Solutions

There are no standard power solutions. Cat experts work with you to design a system to meet your individual power needs.

Learn More

Extended Service Coverage

Spend less time managing your equipment and more time running your business with options to protect you against unexpected repair costs.

Learn More

Hire Similar Size

View our full lineup of construction equipment rental products featuring a wide range of portable generator rental options as well as mobile generator sets for hire.

Learn More

Information Library

We have an information library of product literature, white papers, customer stories, and more. Find what you’re looking for.

Learn More

Technical Resources

Explore valuable resources for generator sizing, specification, and training materials.

Learn More

Product Brochures and More Are Ready to Download!

Full specifications, product brochures and more. Sign up below for additional information. Or for instant access, you can skip this form.

First Name

Last Name

Business Phone

Company

Company Address

City

Zip/Postal Code

Country

Level of interest

Yes I'd like to receive future marketing (e.g. new product information, promotions) communications (e.g. email, text and phone) from Caterpillar Inc., its affiliates and subsidiaries worldwide and the Caterpillar dealer network. Regardless of whether you decide to receive these marketing communications, Caterpillar will continue to send service/transactional messages, including those that have to do with any accounts that you may have with us. No I would not like to receive future marketing communications.

Website Privacy Statement Download without providing email

CTG Series Automatic Transfer Switch

Overview

MX150 Controller

The Catï¿½ CTG Serie Automatic Transfer Switches (ATS)

Features At A Glance

Product Specifications for CTG Series Automatic Transfer Switch

Technical Summary

CTG Series Automatic Transfer Switch Standard Equipment

Standard Features

MX150 Control Panel

CTG Series Automatic Transfer Switch Optional Equipment

Options

See how CTG Series Automatic Transfer Switch compares against frequently compared products.

Tools And Expert Help At Every Turn

Payment Calculator

Current Offers

Rental Options

Find Dealer

Cat Connect: Get More from Every Asset

SpecSizer

Customer Value Agreements

Custom Power Solutions

Extended Service Coverage

Hire Similar Size

Information Library

Technical Resources

assignment Product Brochures and More Are Ready to Download!

Caterpillar product brochures and other informational documents are available for your growing business.

Media Gallery

Photos

All

Check out current offers for the CTG Series Automatic Transfer Switch

Project Financing

No project is the same - from the application to the power need. That's why we offer a range of project financing options.

Free Cat Remote Asset Monitoring Subscription

The Electric Power standard subscription will be free for a limited time.

Products

Services & Support

How Can We Help?

Company Info

Industry Solutions

News And Events

Connect with Cat

Caterpillar Brands

Product Brochures and More Are Ready to Download!