Eaton BAB2040I Thermal Magnetic Circuit Breaker - HACR Rated
Part Number: BAB2040I
Quick Summary
The Eaton BAB2040I thermal magnetic circuit breaker is a bolt-on protector designed for 120/240 V distribution panels in industrial settings. It delivers dependable overcurrent protection for single-phase circuits up to 40 A, helping minimize unplanned outages and equipment damage. Engineers often struggle with nuisance trips, difficult retrofits, and cumbersome wiring; the BAB2040I addresses these with Quicklag technology and a compact two-pole footprint. This unit is UL Listed and CSA Certified and HACR Rated, ensuring safe operation in HVAC and motor-control environments. Its bolt-on mounting, 10 kAIC interrupt rating, and optional shunt trip support scalable modernization, panel upgrades, and energy-management initiatives. In short, it provides reliable protection that aligns with maintenance efficiency and regulatory compliance goals.
Product Information
Extended Description
BAB2040I Eaton: Eaton BAB thermal magnetic circuit breaker,Quicklag industrial thermal-magnetic circuit breaker,Bolt-on mounting,40 A,10 kAIC,Two-pole,120/240 V,Non-Interchangeable,Q7,BAB,120/208/240 V Shunt trip
Product Name
Eaton BAB thermal magnetic circuit breaker
Catalog Number
BAB2040I
UPC
782114312742
Product Length/Depth
2.563 in
Product Height
3 in
Product Width
2 in
Product Weight
0.6 lb
Warranty
1 year
Compliances
HACR Rated
Certifications
UL Listed CSA Certified
Catalog Notes
HACR rated
Circuit breaker type
BAB
Number of poles
Two-pole
Number of wires
3
Type
Quicklag industrial thermal-magnetic circuit breaker
Amperage Rating
40 A
Interrupt rating
10 kAIC
Phase
Single-phase
Trip Type
T196
Voltage rating
120/240 V
Quantity
7
Shunt trip
120-240V
Special features
Bolt-on mounting
Used with
Distribution panels 240 V (Three-phase, four-wire maximum)
Circuit Protection, Miniature Circuit Breakers and Supplementary Protectors, Volume 4, Tab 1
Circuit Breakers Explained
Eaton Specification Sheet - BAB2040I
Feature → Business Impact → Application: Thermal magnetic operation enables fast, selective trips for overloads, reducing equipment damage and downtime while preserving sensitive circuits in industrial controls. This translates into measurable reliability gains for 120/240 V distribution panels and lower maintenance costs when protecting critical loads such as motors and HVAC units. Feature → Business Impact → Application: Bolt-on mounting simplifies installation and retrofit projects by minimizing panel modifications and mounting time, enabling quicker upgrades in existing control panels and new Builds. Feature → Business Impact → Application: The 40 A rating with a 10 kAIC interrupt level provides robust short-circuit protection for two-pole configurations, enhancing safety and compliance in industrial environments while supporting service-life extension of feeders and branch circuits. Feature → Business Impact → Application: HACR rated certification ensures suitability for air conditioning and motor-control applications, reducing the need for multiple protection devices and simplifying engineering calculations in control panels. Feature → Business Impact → Application: UL Listed and CSA Certified statuses validate compliance with global safety standards, smoothing procurement, supplier audits, and installation approvals in regulated facilities. Feature → Business Impact → Application: Optional shunt-trip capability (120–240 V) offers remote trip control for enhanced safety interlocks and centralized protection strategies in critical plant sections.
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FAQs
The BAB2040I is designed for bolt-on mounting, which simplifies retrofits and new installations by eliminating complex bracketry. Its compact two-pole footprint fits standard 120/240 V panels without extensive wiring changes, enabling faster commissioning and easier field maintenance. For upgrades, ensure panel space and mounting holes align with the unit’s 2 in width and 3 in height specification.
This breaker provides a 40 A nominal amperage rating with a 10 kAIC interrupt rating, suitable for single-phase circuits at 120/240 V. It uses Quicklag thermal-magnetic trip technology to balance fast overload protection with nuisance-trip resistance, improving reliability in dynamic load profiles typical of industrial equipment and HVAC systems.
Yes. The unit is HACR rated, making it appropriate for HVAC equipment and motor-control panels. UL Listed and CSA Certified markings ensure regulatory compliance, while its short-circuit protection and remote trip capability (shunt trip option) support integrated safety strategies in HVAC and motor-control environments.
The BAB2040I carries UL Listed and CSA Certified marks, signaling compliance with widely adopted safety and performance standards. Its HACR rating further confirms suitability for HVAC and motor-control applications, helping streamline approvals during audits and procurement processes.
With a 1-year warranty and robust 10 kAIC protection, the BAB2040I offers reliable long-term performance and reduced downtime. Its simple bolt-on installation lowers labor costs during upgrades, while the compact form factor minimizes panel space usage. Overall, the unit supports faster field upgrades, safer operation, and a favorable total cost of ownership.