• Home
  • Courses
  • Machines
    • Transformer
    • AC Motors
      • Induction Motor
      • Synchronous Motor
    • DC Motor
    • DC Generator
  • Power System
    • Circuit Breaker
    • Switchgear
    • Substation
    • Control System
    • Measurement
  • Electronics
  • Blog
  • Contact
    • Contact Us
    • Privacy Policy
Have any question?
[email protected]
Login
StudyElectrical.Com
  • Home
  • Courses
  • Machines
    • Transformer
    • AC Motors
      • Induction Motor
      • Synchronous Motor
    • DC Motor
    • DC Generator
  • Power System
    • Circuit Breaker
    • Switchgear
    • Substation
    • Control System
    • Measurement
  • Electronics
  • Blog
  • Contact
    • Contact Us
    • Privacy Policy

    Circuit Breaker

    Square D QO Circuit Breakers

    • Categories Circuit Breaker, Power System
    Square D Circuit Breaker

    Square D Circuit Breaker

    QO stands for Qwik-Open. Square D QO Circuit Breakers are fastest tripping circuit breakers at 1/60th of a second.

    QO™ Circuit Breakers provide the high level of protection you expect from Square D. When it comes to electrical protection, fast response is critical and QO™ Circuit Breakers can trip faster than the blink of an eye.

    The exclusive QO™ Visi-Trip™ instantly identifies a tripped circuit breaker with a red indicator window. When a QO™ Visi-Trip™ circuit breaker trips, the handle snaps to a midpoint position between “OFF” and “ON” and a highly visible, red indicator easily identifies the tripped breaker. The Visi-Trip™ reduces the number of callbacks, as well as the chance that other circuits will be turned off accidentally.

    Table of Contents

      • QO Circuit Breaker Features
    • Circuit Breaker Product Selection Guide
      • Plug-On Circuit Breakers Selection – 10,000 AIR
      • Tandem (Space Saver) Circuit Breakers Selection – 10,000 AIR
    • QO Ground Fault Circuit Breakers
      • QO Ground Fault Circuit Breaker Features
    • QO Combination Arc Fault Circuit Breakers
      • Square D Combination Arc Fault Circuit Breaker Features
    • TIME SAVER Diagnostics
    • QO Dual Function Circuit Breakers
      • Square D Dual Function Circuit Breaker Features
    • QO Main Circuit Breakers
      • Features
      • Related Articles

    QO Circuit Breaker Features

    • Limited lifetime warranty
    • Exclusive Visi-Trip™ red indicator.
    • Plug-on design, easy to install.
    • Quick make – quick break mechanism.
    • Trip reaction within 1/60th of a second.
    • Single Pole 15 A and 20 A breakers are Switching Duty Rated (SWD).
    • SWD – Suitable for switching 120 Vac fluorescent lighting loads.
    • Option for padlocking breaker in “ON” or “OFF” position.
    • Slot/Robertson screws for wire termination.
    • HACR type for use with air conditioning, heating and refrigeration equipment having motor group combinations and marked for use with HACR type circuit breakers. (Except for QO2100)

    Circuit Breaker Product Selection Guide

    Plug-On Circuit Breakers Selection – 10,000 AIR

    Plug-On Circuit Breakers Selection - 10,000 AIR
    Plug-On Circuit Breakers Selection – 10,000 AIR

    High Magnetic Breakers Selection

    High magnetic breakers are recommended for applications where high initial inrush current may occur.

    High Magnetic Breakers Selection
    High Magnetic Breakers Selection

    Tandem (Space Saver) Circuit Breakers Selection – 10,000 AIR

    Tandem (Space Save) circuit breakers are ideal for adding additional circuits to an existing panel with limited space.

    Tandem (Space Saver) Circuit Breakers Selection - 10,000 AIR
    Tandem (Space Saver) Circuit Breakers Selection – 10,000 AIR

    QO Ground Fault Circuit Breakers

    QO™ Ground Fault Circuit Interrupters (GFCIs) combine the same level of overcurrent circuit protection as standard QO™Circuit Breakers, with ground fault protection for personal protection against electrical shock.

    GFCI protection is required in wet or damp areas such as bathrooms, kitchens, garages, spas, pools and outdoor receptacles. Do not connect to more than 250 feet of load conductor for the total one-way run to prevent nuisance tripping.

    QO Ground Fault Circuit Breaker Features

    • Provides overload and short circuit protection combined with Class A ground fault protection.
    • Class A denotes a ground fault that will trip when a fault current to ground is 5 milliamperes or more for people protection.
    • Exclusive Visi-Trip™ red indicator.
    • Yellow push to test button.
    • Provides an option for the padlock in “ON” or “OFF” position

    QO Combination Arc Fault Circuit Breakers

    Beginning in 2015, the Canadian Electrical code will require the use of Combination Arc Fault Circuit Interrupters
    (CAFCIs) in each branch circuit suppling 125V receptacles rated 20A or less (except in the kitchen, bathrooms, sump
    pump).

    Square D CAFI breakers are available in both pigtail and plug-on (pigtail less) formats, 1 pole/2 pole, and
    15A/20A versions.

    Square D Combination Arc Fault Circuit Breaker Features

    • Detects unintended arc faults, overloads and short circuits.
    • White push to test button.
    • Exclusive Visi-Trip™ red indicator.
    • Plug-on CAFCI version helps minimize installation time by reducing the number of runs and wires. Results in cleaner and faster wiring. Ideal for inspection.
    • The Plug-on CAFCI breaker can only be installed in Square D Plug-on neutral ready loadcentre.
    • Saves time – equipped with TIME SAVER diagnostics feature that assists in identifying the type of fault in a circuit.

    TIME SAVER Diagnostics

    All Square D QO combination arc fault circuit breakers come with a TIME SAVER diagnostics feature that assists in identifying the type of fault that has occurred when the breaker has tripped.

    • Requires no tools – easy to use.
    • Saves money and time.
    • How to use: turn off the circuit breaker, HOLD DOWN the Push-to-test button, and then turn the circuit breaker back on.
    • Use the chart below to determine fault.

    [table id=1 /]

    QO Dual Function Circuit Breakers

    Square D Dual Function circuit breakers combine combination arc fault and ground fault protection in a single device.

    The dual function circuit breaker meets the 2015 Canadian Electrical code requirements for combination arc fault protection in the home, while also offering (Class A – people protection) ground fault protection.

    This unique combination saves space in the panel and installation time for the homeowner or contractor, replacing the arc fault breaker and a ground fault receptacle combination.

    Ideal for the bedroom and bathroom, where one dual function breaker can arc fault protect the bedroom and ground fault the en suite bathroom.

    Another application is an outdoor receptacle where the dual function breaker can provide arc fault and ground fault protection inside the home instead of exposed to the outdoor weather.

    With the built in TIME SAVER diagnostics feature, trouble shooting a fault is easier and faster

    Square D Dual Function Circuit Breaker Features

    • Detects unintended arc faults, ground faults, overloads and short circuits.
    • Purple push to test button.
    • Exclusive Visi-Trip™ red indicator.
    • Offered in both pigtail and non pigtail versions.
    • Plug-on version helps minimize installation time by reducing the number of runs and wires, ideal for inspection.
    • Saves time – equipped with TIME SAVER diagnostics feature that assists in identifying the type of fault in a circuit.

    QO Main Circuit Breakers

    QO™ Main breakers are bolt-on for all residential service entrance loadcentres. Standard 22,000/10,000 ampere series short circuit current rating on main breaker panels provides increased application capability.

    Features

    • Provides option for padlock in “OFF” position.
    • Bolt-on main breaker for Square D service entrance panels

    Reference: https://images.atgstores.com/pdf/13154/047569008986_ca_meas.pdf

    Related Articles

    • ACB Air Circuit Breaker
      Working of Air Circuit Breakers

      What is an ACB? A circuit breaker in which the contacts open and close in…

    • interview question circuit breaker
      Circuit Breakers - Interview Questions with Answers

      1. What is a Circuit Breaker? Circuit Breaker is a mechanical device designed to close…

    • Types of Circuit Breakers
      Different Types of Circuit Breakers

      A circuit breaker is a switching device which can be operated manually as well as…

    • circuit breaker rating
      Circuit Breaker Ratings

      The rating of circuit breaker is given according to the duties that are performed by…

    • electrical-Interview-Questions
      Circuit Breakers - Objective Questions - Part 2

        Part 1Part 2Part 3Part 4Part 5 16. Out of the following circuit breakers, which…

    • minimum oil circuit breaker
      Oil Circuit Breakers - Types, Working and Construction

      In oil circuit breakers, some insulating oil (e.g., transformer oil) is used as an arc…

    • Share:
    Tesla Edison
    Tesla Edison

    Tesla is an Electrical Engineer, Physicist and an Inventor in making. He is a good writer and author of many courses and articles published in this site.

    Previous post

    Bundled Conductors in Transmission Lines
    February 3, 2019

    Next post

    Auto Reclosing of Power Lines and Types of Faults
    February 15, 2019

    You may also like

    Transformer testing at factory
    Percentage Reactance in Power System (Transformer, Generator or Reactor)
    16 January, 2023
    Load Curve and Load Duration Curve
    Load Duration Curve in Power Station
    29 September, 2022
    Double end break disconnect switch
    Disconnect Switches (Isolator) in Substation: Types, Design and Working
    1 September, 2022

    Leave A Reply Cancel reply

    Your email address will not be published. Required fields are marked *

    Search Here

    From Blog

    Electromagnetics Lecture Notes PDF
    [PDF] Electromagnetism Lecture Notes – University of Cambridge
    15Oct2019
    transformer oil testing
    Transformer Oil Testing : Video Training
    05Nov2016
    Differences between Power Transformer and Distribution Transformer
    Power Transformer and Distribution Transformer
    12May2014
    moulded case circuit breaker
    Moulded Case Circuit Breaker (MCCB) – Types and Working
    04Jan2015

    Categories

    • Alternator
    • Arduino
    • Basic Electrical
    • Battery
    • Books
    • Cables
    • Capacitor
    • Career
    • Circuit Breaker
    • Control System
    • DC Generator
    • DC Generator MCQ
    • DC Generator Solved Problems
    • DC Motor
    • DC Motor MCQ
    • Drives
    • Electric Vehicles
    • Electrical Circuits
    • Electrical Machines
    • Electrical Relays
    • Electrical Safety
    • Electronics
    • Embedded System
    • Exams
    • Generation
    • Guest Post
    • HVDC
    • Instrumentation
    • Interview Questions
    • Locomotives
    • MCQ
    • Measurement
    • Microcontroller
    • Objective Questions
    • PCB
    • PLC
    • Power System
    • Problems and Solution
    • Projects
    • Resistor
    • Signals and Systems
    • Single Phase Motors
    • Substation
    • Switchgear
    • Synchronous Motor
    • Three Phase Induction Motor
    • Transformer
    • Transmission Line
    • Uncategorized

    Copyright © 2021 Study Electrical, Inc.

    © StudyElectrical.Com 2021

    Login with your site account

    Lost your password?