Built for residential applications, the Eaton TBA240 delivers 40A of thermal-magnetic protection with a compact 1-inch thin profile. This space-saving design allows for higher circuit density in compatible panels. It mounts into Challenger Type A, Crouse-Hinds Type MH, Murray Type MP, and Thomas & Betts Type A load centers. Serving as an exact replacement for legacy A240, MH240, and MP240 models, it provides 10 kAIC interrupting capacity at 120/240VAC and is HACR rated for HVAC equipment.
Challenger Type A Load Centers, Crouse-Hinds Type MH Load Centers, Murray Type MP Load Centers, Thomas & Betts Type A Load Centers
Wire Gauge
8-3 AWG
Max Wire
3 AWG
Min Wire
8 AWG
Protection and operation
Trip Technology
Thermal Magnetic
Trip Function Code
LI
Trip Function
Long-Time, Instantaneous
Trip Adjustability
Fixed
Standards and features
Standards
UL 489
Approval
ETL
Temp Rating
40C
Construction Features
HACR Rated, Thin/Wafer Design
Product FAQs
5 answers
Which load centers accept the TBA240 circuit breaker?
The TBA240 is UL classified for installation in Challenger Type A, Crouse-Hinds Type MH, Murray Type MP, and Thomas & Betts Type A load centers.
What legacy circuit breaker part numbers does the TBA240 replace?
This breaker serves as a direct replacement for obsolete 40A, 2-pole models including the Challenger A240, Crouse-Hinds MH240, Murray MP240, and Thomas & Betts TB240.
Is the TBA240 circuit breaker HACR rated?
Yes, this breaker is HACR rated, making it approved for protecting heating, air conditioning, and refrigeration equipment circuits.
How much panel space is required to install the TBA240?
The TBA240 features a standard 1-inch per pole format. As a 2-pole breaker, it requires two adjacent 1-inch spaces, taking up 2 inches of total space on the panel bus.
Is there a difference between the UBITBA240 and TBA240 part numbers?
No, they refer to the same product. UBITBA is the series designation for these classified replacement breakers, while TBA240 is the specific part number for the 40A, 2-pole version.
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