CSA C22.2 No. 335:21

National Standard of Canada

Pullout switches

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  CSA C22.2 No. 335:21

  July 2021

  
  

  Title: Pullout switches

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National Standard of Canada

CSA C22.2 No. 335:21

Pullout switches

®A trademark of the Canadian Standards Association, operating as “CSA Group”

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ICS 29.120.40

ISBN 978-1-4883-3307-1

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Contents

Technical Committee on Industrial Products (TCIP) 3

Subcommittee on Pullout Switches 6

Preface 7

1. Scope 8

   
   

2. Reference publications 8

   
   

3. Definitions 9

   
   

4. General requirements 10

   
   

5. Construction requirements 10

   1. General 10

   2. Enclosure 11

   3. Doors and covers 12

   4. Operating mechanism 12

   5. Insulating material 14

   6. Current-carrying parts 14

   7. Wiring terminals 15

   8. Bonding terminals 17

   9. Field conversion 18

   10. Spacings 19

   11. Insulating barriers 21

   12. Wire bending space 22

       
       

6. Ratings 22

   
   

7. Markings 23

   
   

8. Tests 29

   1. General 29

   2. Heating test (without fuses) 30

   3. Heating test (with fuses) 31

      1. 30 and 60 A Class H or Class K fuses 31

      2. Class CC, G, J, and R fuses 32

   4. Overload-cycle-heating test 32

   5. Overload test 33

   6. Dielectric voltage-withstand test 33

   7. Short-circuit withstand test 33

   8. Low-level dielectric voltage-withstand test 36

   9. Short-circuit closing test 36

   10. Strength of insulating base and support test 36

   11. Bonding continuity test 36

   12. Clamped joint test 37

   13. Close-open test 37

   14. Mold stress relief test 38

   15. Insulating barriers test 38

Technical Committee on Industrial Products (TCIP)

R. P. de Lhorbe Schneider Electric Canada, Inc.,

North Vancouver, British Columbia, Canada

Category: Producer Interest

Chair

A. Z. Tsisserev AES Engineering Ltd,

Vancouver, British Columbia, Canada

Category: User Interest

Vice-Chair

M. Smith Kitchener, Ontario, Canada

Category: General Interest

Vice-Chair

B. M. Baldwin Baldwin Services Inc,

Saskatoon, Saskatchewan, Canada

Category: General Interest

R. M. Bartholomew Electric Power Equipment Ltd,

Vancouver, British Columbia, Canada

Category: Producer Interest

G. Benjamin ABB Electrification Canada SRI, Dorval, Quebec, Canada

Non-voting

R. B. Buckler ASCO Power Technologies Canada, Brantford, Ontario, Canada Category: Producer Interest

W. J. Burr Burr and Associates,

Campbell River, British Columbia, Canada

Non-voting

G. Chopra Electro Federation Canada, Toronto, Ontario, Canada

Non-voting

M. T. Cole Hubbell Canada ULC, Pickering, Ontario, Canada

Non-voting

C. C. Cormier Alberta Municipal Affairs, Edmonton, Alberta, Canada Category: Regulatory Authority

1. W. Douglas QPS Evaluation Services Inc., Toronto, Ontario, Canada

   Non-voting

   
   

   
   

2. S. Driscoll OBIEC Consulting Ltd, Calgary, Alberta, Canada Category: User Interest

J. H. Dymond Peterborough, Ontario, Canada Non-voting

V. V. Gagachev Eaton,

Burlington, Ontario, Canada

Category: Producer Interest

N. Hanna Electrical Safety Authority, Mississauga, Ontario, Canada Category: Regulatory Authority

R. Leduc Marex Canada Limited, Calgary, Alberta, Canada Category: User Interest

A. Leslie Curtiss Wright Controls, Stratford, Ontario, Canada

Non-voting

D. Mascarenhas Brampton, Ontario, Canada

Category: General Interest

M. A. Masur Eaton,

Burlington, Ontario, Canada

Non-voting

S. Mercier Régie du bâtiment du Québec, Montréal, Quebec, Canada Category: Regulatory Authority

R. Pack SaskPower,

Saskatoon, Saskatchewan, Canada

Category: Regulatory Authority

M. Pilato Technical Safety BC,

Kelowna, British Columbia, Canada

Category: Regulatory Authority

S. Rasaratnam Schneider Electric, Edmonton, Alberta, Canada

Non-voting

L. G. Silecky Mersen Canada Toronto Inc., Mississauga, Ontario, Canada

T. Simmons British Columbia Institute of Technology, Burnaby, British Columbia, Canada Category: General Interest

D. Sohm Independent Electricity System Operator, Mississauga, Ontario, Canada

Non-voting

P. Vemireddy Hero TCG GmbH, Stephanskirchen, Germany

Non-voting

G. Wagner Stockdales,

Saskatoon, Saskatchewan, Canada

Non-voting

C. J. Workman Eaton Industries (Canada) Company, Burlington, Ontario, Canada

Non-voting

C. Lee CSA Group,

Toronto, Ontario, Canada

Project Manager

Subcommittee on Pullout Switches

V. V. Gagachev Eaton,

Burlington, Ontario, Canada

Chair

Y. Boodram Schneider Electric Canada, Inc., Mississauga, Ontario, Canada

Vice-Chair

C. Carne Schneider Electric USA, Inc. Square D, Cedar Rapids, Iowa, USA

F. Chan Siemens Canada Limited, Oakville, Ontario, Canada

M. Lusk CSA Group,

Charlotte, North Carolina, USA

B. Lewis Siemens Industry, Inc, Norcross, Georgia, USA

M. J. Ranta Eaton Corporation, Lincoln, Illinois, USA

L. G. Silecky Mersen Canada Toronto Inc., Mississauga, Ontario, Canada

C. Lee CSA Group,

Toronto, Ontario, Canada

Project Manager

Preface

This is the first edition of CSA C22.2 No. 335, Pullout Switches. It supersedes and replaces the Technical Information Letter on Interim Certification Requirements for Pullout Switches, which was issued in 2016 as CSA T.I.L. D-35. It is one in a series of Standards issued by CSA Group under Part II of the Canadian Electrical Code.

This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard.

This Standard was prepared by the Subcommittee on Pullout Switches, under the jurisdiction of the Technical Committee on Industrial Products (TCIP) and the Strategic Steering Committee on Requirements for Electrical Safety (SCORES), and has been formally approved by the Technical Committee.

This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.

Interpretations: The Strategic Steering Committee on Requirements for Electrical Safety has provided the following direction for the interpretations of standards under its jurisdiction: “The literal text shall be used in judging compliance of products with the safety requirements of this Standard. When the literal text cannot be applied to the product, such as for new materials or construction, and when a relevant committee interpretation has not already been published, CSA’s procedures for interpretation shall be followed to determine the intended safety principle.”

Notes:

1. Use of the singular does not exclude the plural (and vice versa) when the sense allows.

2. Although the intended primary application of this Standard is stated in its Scope, it is important to note that it remains the responsibility of the users of the Standard to judge its suitability for their particular purpose.

3. This Standard was developed by consensus, which is defined by CSA Policy governing standardization — Code of good practice for standardization as “substantial agreement. Consensus implies much more than a simple majority, but not necessarily unanimity”. It is consistent with this definition that a member may be included in the Technical Committee list and yet not be in full agreement with all clauses of this Standard.

4. To submit a request for interpretation of this Standard, please send the following information to inquiries@csagroup.org and include “Request for interpretation” in the subject line:

   1. define the problem, making reference to the specific clause, and, where appropriate, include an illustrative sketch;

   2. provide an explanation of circumstances surrounding the actual field condition; and

   3. where possible, phrase the request in such a way that a specific “yes” or “no” answer will address the issue.

      Committee interpretations are processed in accordance with the CSA Directives and guidelines governing standardization and are available on the Current Standards Activities page at standardsactivities.csa.ca.

5. This Standard is subject to review within five years from the date of publication. Suggestions for its improvement will be referred to the appropriate committee. To submit a proposal for change, please send the following information to inquiries@csagroup.org and include “Proposal for change” in the subject line:

   1. Standard designation (number);

   2. relevant clause, table, and/or figure number;

   3. wording of the proposed change; and

   4. rationale for the change.

CSA C22.2 No. 335:21

Pullout switches

1. Scope

   
   

   1.1

   This Standard applies to non-enclosed and enclosed pullout switches of the detachable type, rated up to 600 V and 400 A. The equipment specified in this Standard is intended for installation in accordance

   with CSA C22.1, Canadian Electrical Code, Part I.

   
   

   1.2

   These requirements do not apply to hinged pullout switches which are covered in CAN/CSA-C22.2 No. 4.

   
   

   1.3

   These requirements do not apply to enclosed pullout switches containing more than one independent switch which are covered in CSA C22.2 No. 29.

   
   

   1.4

   In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standard.

   Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

   
   

   Notes to tables and figures are considered part of the table or figure and may be written as requirements.

   
   

   Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

   
   

2. Reference publications

These requirements refer to the following publications, and where such reference is made, it shall be to the edition listed below, including all amendments published thereto.

C22.1:21

Canadian Electrical Code, Part I

C22.2 No. 0:20

General requirements – Canadian Electrical Code, Part II

C22.2 No. 0.4-17

Bonding of electrical equipment