Square D Digest 179

Melting Alloy Overload Relay Class 9065 / Refer to Catalog 9065CT9701

Overload Relays

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Melting Alloy Overload Relay Selection NEMA style thermal overload relays feature: • Exclusive one-piece thermal unit • Inverse time delay trip

• Trip free reset mechanism • Replaceable contact units

Note that these overload relays do not include thermal units, which must be ordered and field installed separately. Slow trip (Class 30) and quick trip (Class 10) melting alloy thermal units are available for all Size 1, 2, 5 and 6, and some Size 3 applications. Table 16.270: For Separate Mounting—Melting Alloy—600 V Maximum, AC or DC [1]

Open Type Relay and Bracket Kit for Terminal Block Channel Mounting Type

TypeSEO5

Maximum Full Load Current (A)

OpenType for Separate Panel Mounting Left and Right Hand Types

NEMASize

E

Three Pole Construction (One Common N.C. Contact on Type S Only)—3 Thermal Units Required 00–1 25 9065SEO5 — 2 45 9065SEO8 — 3 86 9065SEO12 — 4 133 9065SEO15 — Table 16.271: Replacement Melting Alloy Overload Relays for Square D Class 8536 Starters Locate Class 8536 Starter in this Column Order Class 9065 Overload Relay from this Column NEMA Size Type Series Number of Poles Type Number of Thermal Units Required 00 SA A&B 2 — 1 3 9065SDO5 3 0 SB A 2 — 1 3–5 9065SDO5 3 [2] 1 SC A 2 — 1 3–5 9065SDO5 3 [2] 1P SC A 2 — 1 2 SD A 2 — 1 3–5 9065SDO8 3 [2]

F

G

H

A

I

B

16 NEMA AND DEFINITE PURPOSE CONTACTORS AND STARTERS

K

J

C

L

D

M

N O

P: Provision for 4 Mounting Screws

Type SEO Dimensions

2 3 4 5 3 4 5 3 3

1 3 2 3 3 2 3 3 3

9065SDO12 9065SDO13 9065SDO14 9065SDO15 9065SDO17 9065SEO5 9065SEO5 —

3

SE

A

4

SF

A

B [3]

5 6

SG SH

A&B

Table 16.272: Special Features for Melting Alloy Overload Relays Description Substitute 1-N.O. isolated alarm contact and 1-N.C. contact per relay. (Type S starters only) [4] Substitute 2-N.C. contacts for standard N.C. contact per relay. (Type S starters only) [4] Modify Type SDO12 relays to accept Type FB quick trip or SB slow trip thermal units. (Rejects Type CC standard trip units) [5]

Form Y342 Y344

Y81

Table 16.273: Approximate Dimensions, NEMA Style Melting Alloy Overload Relays Type Dimensions (in.)

Shipping Weight (lb)

A

B

C

D

E

F

G H

I

J

K L

M N O P

SEO5 SEO8 SEO12 SEO15

3.31 3.31

— 0.47 — 0.47

3.97 3.97 5.75 5.75

3.53

2.81 2.81 4.75 4.75

0.22 0.69 0.19 0.69 0.28 1.44 0.28 2.13

2.31 0.5 0.5 0.5 0.84 2.31 0.5 0.5 0.13 0.84 3.56 0.75 0.56 0.88 1.5 1.75 3.56 0.75 0.56 0.88 1.5 1.75 1 1

1.38 #10 1.38 #10 2 #1/4 2 #1/4

1

3.5

1.25

— 5.59 — 6.97

0.56 0.56

5.31 5.31

3

4 NOTE: These dimensions are for reference only. If you need precise measurements, contact the Customer Care Center at 1-888-778-2733.

[1] The maximum power circuit rating for Type S separate-mounting overload relays is 600 Vac only. The maximum control circuit contact rating for Type S versions is 600 Vac only. [2] For 4-pole starters used on two-phase systems, order two thermal units plus one Class 9998 Type SO31 jumper strap kit for every two starters. Each kit includes two jumper straps. [3] Also used for Series A with Form Y500. For series A without Forms, see Table 16.275 Replacement SSOLRs, page 16-102. [4] Field modification possible. Order 9999S04 (for FormY342 ) or 9999S05 (for FormY344 ). [5] This Form cannot be field modified.

16-101

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