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UL 1558 - UL Standard for Safety Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear
February 18, 2016 - UL

These requirements cover metal-enclosed low-voltage power circuit breaker switchgear assemblies containing but not limited to such devices as low-voltage power circuit breakers, other interrupting devices, switches, control, instrumentation and metering, protective and...

ANSI C37.16 - Low-Voltage Power Circuit Breakers and AC Power Circuit Protectors Preferred Ratings, Related Requirements, and Application Recommendations
January 1, 2000 - IEEE

Foreword This standard has been revised to include a 5000 Ampere frame size in tables 1 through 5 and tables 22A and 22B for low-voltage AC power circuit breakers. In addition, both 1000 volt and 1200 volt ratings for DC breakers in tables 11, 11a, and 12 are now included,...

IEEE C37.12.1 - Guide for High-Voltage (>1000 V) Circuit Breaker Instruction Manual Content
December 5, 2007 - IEEE

This application guide for capacitance current switching applies to ac high-voltage circuit breakers rated in accordance with IEEE Std C37.04™1 and listed in ANSI Std C37.06. It is intended to supplement IEEE Std C37.010™. Circuit breakers rated and manufactured...

ANSI C37.51A - For Switchgear - Metal-Enclosed Low-Voltage AC Power Circuit Breaker Switchgear Assemblies-Conformance Test Procedures Amendment 1: Short-Time Withstand Current Tests
January 1, 2010 - NEMA

Foreword This amendment has been developed to coordinate selected conformance tests and procedures with ANSI/IEEE C37.20.1-2002 Metal-Enclosed Low-Voltage AC Power Circuit Breaker Switchgear, and particularly, to recognize the amendment C37.20.1a-2005. C37.51 is published...

ANSI C37.06.1 - Guide for High-Voltage Circuit Breakers Rated on Symmetrical Current Basis Designated “Definite Purpose for Fast Transient Recovery Voltage Rise Times”
January 1, 2000 - IEEE

Foreword Following reports of circuit breaker failures in applications where very fast TRVs were determined to be the cause, and after thorough analysis of TRV data gathered from all parts of the world, this guide was suggested by the IEEE Switchgear Committee's Task Force on...

UL 489H OUTLINE - UL Outline for Investigation Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures, for Use with Direct Current (DC)
November 14, 2017 - UL

These requirements cover molded-case circuit breakers, molded-case switches, and circuit-breaker enclosures rated up to 1000 V dc, intended for use with Direct Current (DC) Microgrid systems and Article 712 of the National Electrical Code, ANSI/NFPA-70. These...

ANSI C37.54 - For Indoor Alternating Current High-Voltage Circuit Breakers Applied as Removable Elements in Metal-Enclosed Switchgear— Conformance Test Procedures
January 1, 2002 - NEMA

Scope and objectives When conformance tests are required, this standard specifies tests to demonstrate that the circuit breaker being tested conforms with the ratings assigned to it in accordance with ANSI/IEEE C37.04. Preferred ratings are listed in ANSI C37.06. As a...

UL 489B OUTLINE - UL Outline of Investigation for Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures for Use with Photovoltaic (PV) Systems
September 10, 2014 - UL

These requirements cover molded-case circuit breakers, molded-case switches, and circuit-breaker enclosures rated up to 1500 V dc, intended for use with photovoltaic (PV) systems and Article 690 of the National Electrical Code, ANSI/NFPA-70. These requirements are...

UL 1066 - UL Standard for Safety Low-Voltage AC and DC Power Circuit Breakers Used in Enclosures
April 13, 2012 - UL

These requirements cover low-voltage ac power circuit breakers as follows: a) Stationary-mounted or drawout-mounted types, b) 2-pole, 3-pole, and 4-pole constructions, c) Manually operated or power operated, and d) With or without electromechanical or solid-state type trip device....

ANSI C33.120 - CIRCUIT BREAKERS & CIRCUIT BREAKER ENCLOSURES
ANSI
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IEEE C37.17 - Trip Systems for Low-Voltage (1000 V and below) AC and General Purpose (1500 V and below) DC Power Circuit Breakers
June 8, 2012 - IEEE

This standard pertains to the requirements for direct acting current and voltage protective functions of: a) direct-acting overcurrent electromechanical trip devices b) direct-acting overcurrent electronic trip systems c) reverse-current trip systems for dc circuit breakers d)...

ANSI C37.17 - American National Standard for Trip Devices for AC and General Purpose DC Low Voltage Power Circuit Breakers
January 1, 1997 - IEEE

Foreword (This foreword is not part of ANSI C37.17-1997.) This standard supersedes and updates the 1979 edition and all previous revised editions of the original standard published in 1956, all written by the National Electrical Manufacturers Association. This standard pertains to...

UL 489F OUTLINE - UL Outline for Investigation Molded-Case Circuit Breakers and Molded-Case Switches for Use with Battery Power Supplies
January 12, 2016 - UL

These requirements cover molded-case circuit breakers and molded-case switches rated greater than 250 V dc but no greater than 1500 V dc and intended for use with battery power supplies (BPS) which may be wired with multiple poles in series, such as may be used in uninterruptible...

MIL-B-9895 - BEAD BREAKER, HYDRAULIC, PNEUMATIC TIRE
October 27, 1960 - NPFC

This specification covers one type of hydraulic aircraft tire bead breaker to accomodate tires from 34″ O.D. to 56″ O.D.

Power Circuit Breaker Theory and Design
January 1, 1982 - IET

The book has 13 chapters and the following topics are dealt with: development of circuit breakers; physics of circuit breaker arcs; network switching conditions; oil circuit breakers; air break circuit breakers; air blast circuit...

ANSI C37.09 - Standard Test Procedure for AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis
June 26, 1999 - IEEE

This test procedure summarizes the various tests that are made on ac high-voltage indoor and outdoor circuit breakers, except for generator circuit breakers, which are covered in IEEE Std C37.013-1997. It describes accepted methods used in making the tests and specifies...

NEMA SG 11 - Guide for Handling and Maintenance of Alternating Current Outdoor High-Voltage Circuit Breakers
January 1, 2013 - NEMA

This document provides information on receiving, storage, handling, installation, inspection, and maintenance of alternating current outdoor high-voltage circuit breakers. It is impossible to cover here in detail all guidelines for each of the different types of circuit...

IEEE C37.011 - Guide for the Application of Transient Recovery Voltage for AC High-Voltage Circuit Breakers
October 31, 2011 - IEEE

This application guide covers procedures and calculations necessary to apply the standard transient recovery voltage (TRV) ratings for ac high-voltage circuit breakers rated above 1000 V. The breaking capability limits of these circuit breakers are determined to a great...

ANSI C37.51 - Switchgear — Metal-Enclosed Low Voltage AC Power Circuit Breaker Switchgear Assemblies — Conformance Test Procedures
January 1, 2018 - NEMA

This Standard is a conformance testing Standard optionally applicable to all metal-enclosed low-voltage ac power circuit breaker switchgear assemblies designed, tested, and manufactured in accordance with IEEE Std C37.20.1, Metal-Enclosed Low-Voltage AC Power Circuit...

IEEE C37.081 - Guide for Synthetic Fault Testing of AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis
January 1, 1981 - IEEE

This guide is intended to provide a basis for synthetic testing of circuit breakers (see ANSI/IEEEC37.04-1979 [2]) and to establish the criteria for testing to demonstrate the short-circuit current rating of circuit breakers on a single phase basis. It is...

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