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Square D > On-line Catalog > Products > NEMA Contactors and Starters > Thermal Overload Relays—NEMA Rated: Bimetallic

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Thermal Overload RelaysNEMA Rated

Bimetallic

Class 9065 / Refer to Catalog 9065CT9701

Bimetallic thermal overload relays feature Class 20 protection with 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. Standard trip thermal units are $14.30 each.
Table 16.291:
For Separate Mounting—Bimetallic—600 V Maximum AC or DCa
Maximum
Full Load
Current (Amperes)
Number of
Thermal Units
Required
25
60
Non-
Compensated
1
2
 26
 45
Ambient
Temperature-
Compensated
1
2
 26
 45
Table 16.292:
Replacement Overload Relay for
Square D Class 8536 Bimetallic Overload Relay on an Existing Starter
NEMA
Size
Number
of
Poles
Number of
Thermal
Units
Required
Bb
B1b
B2b
3
2
3
Bb
B1b
B2b
3
2
3
Bb
B1b
B2b
3
2
3
B
B2
3
3
b
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.
d
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.
Table 16.293:
Replacement Overload Relay for
Square D Class 8940 Pump Panel with IEC Style
Bi-metallic Overload Relays Mounted on Current Transformers
Number
of
Poles
Discount Schedule

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Release Date: 03/31/2007
Modification Date: 04/13/2008