Brochure
Table Of Contents
- Introduction
- Motor Failure and Protection
- Trip Class Designation
- Withstand Ratings
- Thermal Overload Relay
- Melting Alloy
- Non-Compensated Bimetallic
- Automatic Reset
- Ambient Temperature Compensated Bimetallic
- Thermal Overload Relay Trip Characteristics
- Solid State Overload Relay
- Additional Standard Features
- Optional Features
- Additional Standard Features
- Optional Features
- General
- Nameplate Versus NEC Full-load Current
- Service Factor
- Motor Branch Circuit Design
- Overload Relays
- Hand Reset Melting Alloy
- Accessories
- Isolated Auxiliary Contacts for Motor Logic Overload Relays
- DIN Adapter
- Lug-Lug/Lug-Extender Kits
- Remote Reset Module
- 4 – 20 ma DC Communication Module
- Contact Units for Melting Alloy Type Overload Relays
- Melting Alloy Overload Relay Jumper Strap Kits
- Bimetallic Overload Relays
- Motor Logic™ – Solid State Overload Relay
© 1998 Square D All Rights Reserved
8
5/98
Thermal Overload Relays – NEMA Rated
Bimetallic
Bimetallic thermal overload relays feature automatic reset or hand reset and a trip-free mechanism.
There are ambient temperature-compensated versions. Note that thermal units are not included in the
shown prices.
For Separate Mounting – Bimetallic – 600 Volts Maximum AC or DC
a
Description Size
Maximum Full Load
Current (Amperes)
Open Type for
Separate Panel Mounting
Number of Thermal
Units Required
Single Pole Construction (One N.C. Contact)
Non-Compensated
00, 0, 1
2
3
4
25
60
100
180
DA
GA
HA
JA
1
Three Pole Construction (One Common SPDT Contact on Type S)
Non-Compensated
1
2
26
45
SEO6B2
SEO9B2
3
Ambient Temperature-
Compensated
1
2
26
45
SEO6B
SEO9B
3
For additional selections see International Control Products.
a
Maximum control circuit contact rating for Type S versions is 600 volts AC only.
Replacement Overload Relay for
Square D Class 8536 Bimetallic Overload Relay on an Existing Starter
Locate Class 8536 Starter in this Column
Order Class 9065 Overload Relay
from this Column
NEMA
Size
Type Series
Number of
Poles
Form Type
Number of
Thermal Units
Required
0 SB A & B Any
B
q
B1
q
B2
q
SDO6B
SDO5B1
SDO6B2
3
2
3
1 SC A & B Any
B
q
B1
q
B2
q
SDO6B
SDO5B1
SDO6B2
3
2
3
2 SD A Any
B
q
B1
q
B2
q
SDO9B
SDO8B1
SDO9B2
3
2
3
3SE
A 3 Y59
k
26005-11000 1
A
3B5
k
SHA01 3
B 26005-31000 1
4SF
A 3 Y59
k
26005-11500 1
A
3B5
k
SJA01 3
B 26005-31800 1
5SGA3
B2Y500
p
SEO6B2 3
BY500
p
SEO6B 3
6 SH A & B 3
B
B2
SEO6B
SEO6B2
3
3
q
B indicates ambient temperature-compensated bimetallic overload relay.
B1 indicates single phase non-ambient temperature compensated bimetallic overload relay.
B2 indicates polyphase non-ambient temperature compensated bimetallic overload relay.
k
Form B5 and Form Y59 use 1 overload relay block per phase. B5 indicates single phase bimetallic overload relay. Y59 indicates single phase ambient
temperature compensated bimetallic overload relay.
p
B2Y500 indicates bimetallic overload relay with current transformer sensing. BY500 indicates ambient temperature compensated bimetallic overload
relay with current transformer sensing. This part number does not include the current transformer assembly (Current Transformer part number
31102-084-50).
Class 9065
Type SEO6B2
Three Pole Construction
Non-Compensated