Installation Guide

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Motor Control Solutions Table of Contents

Table of Contents

Introduction .................................................................................................... 4

Overview of U.S. Standards and Regulations ............................................. 4

U.S. National Standards ............................................................................ 4

UL 508 Transition to UL 60947 .................................................................. 4

Product Standards: UL 489 Circuit Breakers vs. UL 1077 Supplementary

Protectors .................................................................................................. 5

Certification Process .................................................................................. 5

Acceptance of Electrical Equipment in the U.S. ......................................... 5

Structure of a Motor Starter in Accordance with UL 508A ......................... 6

Feeder Circuits and Branch Circuits .......................................................... 6

Group Motor Installations..................................................................... 7

Required Functions of Combination Starters ............................................. 8

Combination Starter Construction Types .................................................... 9

UL Combination Starter Types A through D ............................................. 10

UL Combination Starter Type E......................................................... 10

UL Combination Starter Type F......................................................... 10

Self-Protected Designation and Implications ........................................... 10

Construction Type Selection .................................................................... 11

Disconnecting Means on a Feeder or Branch Circuit .............................. 11

Motor Starter Line Diagrams .................................................................... 12

Disconnecting Means .................................................................................. 13

Industrial Machinery Requirements (NFPA 79 Section 5.3.3.1 and

UL 508A Section 65, 66) .......................................................................... 13

SCCR Requirement in UL 508 A ................................................................. 14

Ratings: Tested Combination vs. Component ................................... 14

UL 508A Support Websites ............................................................... 15

Combination Starter Components ............................................................. 16

UL 98 Manual Disconnect Switches ........................................................ 16

TeSys™ GS Disconnect Switches..................................................... 16

TeSys™ LK Disconnect Switches ..................................................... 16

Class 9422 Disconnect Switches....................................................... 17

UL 248 Fuses .......................................................................................... 18

TeSys™ DF Fuse Holders................................................................. 18

Type FB Fuse Holders....................................................................... 18

UL 489 Molded-Case Circuit Breakers .................................................... 19

PowerPact™ Circuit Breakers and Motor Circuit Protectors ............. 19

UL 489 Miniature Circuit Breakers and UL 1077 Supplementary

Protectors ................................................................................................ 20

Multi 9™ Circuit Breakers and Supplementary Protectors ................ 20

UL 508 Contactors ................................................................................... 21

TeSys™ K Contactors ....................................................................... 21

TeSys™ D Contactors....................................................................... 22

TeSys™ F Contactors ....................................................................... 25

TeSys™ N Contactors....................................................................... 27

Type S Contactors............................................................................. 28

Definite Purpose Contactors.............................................................. 29