NEMA Melting Alloy Overload Relay Selection Tables

Type SEO5

Type SEO Dimensions

NEMA style thermal overload relays feature:

Exclusive one-piece thermal unit
Inverse time delay trip
Trip-free reset mechanism
Replaceable contact units

NOTE: 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. For more information on thermal unit trip types, see the table Thermal Unit Trip Types.

Separate Mounting—Melting Alloy Overload Relays—600 V Maximum, AC or DC*

NEMA Size	Maximum Full Load Current (A)	Open Type for Separate Panel Mounting Left and Right Hand Types	Open Type Relay and Bracket Kit for Terminal Block Channel Mounting
NEMA Size	Maximum Full Load Current (A)		Type
NOTE: 3-pole construction (One Common N.C. Contact on Type S Only)—3 Thermal Units Required
00–1	25	9065SEO5	9065SM2
2	45	9065SEO8	9065SM2
3	86	9065SEO12	—
4	133	9065SEO15	—

Replacement Melting Alloy Overload Relays for 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	9065SDO4	1
00	SA	A & B	3	9065SDO5	3
0	SB	A	2	9065SDO4	1
0	SB	A	3–5	9065SDO5	3*
1	SC	A	2	9065SDO4	1
1	SC	A	3–5	9065SDO5	3*
1P	SC	A	2	9065SDO10	1
2	SD	A	2	9065SDO7	1
2	SD	A	3–5	9065SDO8	3*
3	SE	A	2	9065SDO11	1
			3	9065SDO12	3
			4	9065SDO13	2
			5	9065SDO14	3
4	SF	A	3	9065SDO15	3
			4	9065SDO16	2
			5	9065SDO17	3
5	SG	B *	3	9065SEO5	3
6	SH	A & B	3	9065SEO5	3

Special Features for Melting Alloy Overload Relays

Description	Form
Substitute 1-N.O. isolated alarm contact and 1-N.C. contact per relay. (Type S starters only)*	Y342
Substitute 2-N.C. contacts for standard N.C. contact per relay. (Type S starters only)*	Y344
Modify Type SDO12 relays to accept Type FB quick-trip or SB slow-trip thermal units. (Rejects Type CC standard trip units)This Form cannot be field modified.*	Y81

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

NEMA Style Melting Alloy Overload Relays, Dimensions A–H

Type	Dimensions (in.)								Shipping Weight (lb)
Type	A	B	C	D	E	F	G	H	Shipping Weight (lb)
SEO5	3.31	—	0.47	3.97	3.53	2.81	0.22	0.69	1
SEO8	3.31	—	0.47	3.97	3.5	2.81	0.19	0.69	1.25
SEO12	—	5.59	0.56	5.75	5.31	4.75	0.28	1.44	3
SEO15	—	6.97	0.56	5.75	5.31	4.75	0.28	2.13	4