Control_Flippingbook_July 2024

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NEMA FULL VOLTAGE POWER DEVICES, CONTROL SECTION 1

— CR306, CR307, CR308, CR310 magnetic starters Factory-installed modifications for magnetic starters

NEMA sizes 00-6

Factory-installed auxiliary contacts The final letter of the product number denotes extra auxiliary contacts (sometimes referred to as auxiliary interlocks). Order the desired extra auxiliary contacts, factory installed on the starter, by replacing the final letter of the product number with a letter from the first column of the auxiliary contact table.

Example: CR307G104BAB is a size 5 starter with one extra auxiliary contact, normally open.

If a 306 product number has no 3-letter suffix, first add an “AAA” suffix, and then substitute a letter from first column of the auxiliary contact table. Example: CR306C022 becomes CR306C022AAD for a size 1 starter with one extra NO and one extra NC auxiliary contact.

— Extra auxiliary contact table

Contact location 4 contacts max.

Final suffix letter of product no. on starter

W

X

Y

T

Z

U

A or None B C D

E F

G H J K L M N

NEMA sizes 0 and 1 single-speed, nonreversing, 2- and 3-pole starters

P R

— Extra auxiliary contact table

Contact location 5 contacts max.

Final suffix letter of product no. on starter

W

X

Y

T

Z

U

A or None B C D

E F

G H J K L M N P R S T U W

NEMA sizes 2, 3 and 4, single-speed nonreversing starters

X Y