Eaton CHB340 Circuit Breaker - CHB Thermal Magnetic, 10 kAIC
Part Number: CHB340
Quick Summary
Eaton CHB340 circuit breaker protects electrical panels in industrial settings. This thermal magnetic device delivers reliable fault protection for CH loadcenters, helping operators prevent nuisance trips and unplanned downtime. UL 489 listing and CH Loadcenter compatibility provide clear safety compliance, while a limited lifetime warranty offers long-term protection for your investment. The compact form factor and straightforward installation support efficient panel design, reducing enclosure space requirements and installation time. With 40 A at 240 V and a 10 kAIC interrupt rating, it meets common industrial protection needs while remaining easy to source and service for maintenance teams and buyers seeking dependable performance.
Product Information
Extended Description
CHB340 Eaton: Type CHB Circuit Breaker, 40A, Three-pole, 240V, 10 kAIC, #8-4 AWG wire size
Product Name
Eaton CH thermal magnetic circuit breaker
Catalog Number
CHB340
UPC
782113112626
Product Length/Depth
3.3 in
Product Height
3.3 in
Product Width
3.3 in
Product Weight
0.6 lb
Warranty
Limited lifetime
Certifications
UL 489 Contact Manufacturer
Used with
CH Loadcenters
Type
Circuit breaker
Amperage Rating
40 A
Voltage rating
240 V - 240 V
Circuit breaker type
CHB
Interrupt rating
10 kAIC
Wire size
#8-4 AWG
Number of poles
Three-pole
Feature: Thermal magnetic trip technology provides fast, coordinated protection against both short circuits and overloads → Business Impact: minimizes equipment damage and reduces downtime by ensuring selective tripping in shared bus configurations → Application: ideal for CH loadcenter panels in motor control and process automation. Feature: 40 A rating at 240 V with 10 kAIC interrupt capacity → Business Impact: supports robust protection in medium-load distribution, enabling safer panel operation and longer component life → Application: suitable for control panels, machine feeders, and distribution blocks. Feature: Three-pole configuration with #8-4 AWG wire capability → Business Impact: simplifies wiring and improves phase balance, delivering reliable performance in dense control cabinets → Application: streamlined installation in compact switchgear and CH Loadcenters. Feature: Compact 3.3 in dimensions and 0.6 lb weight → Business Impact: saves enclosure space and reduces shipping and handling costs, improving overall project economics → Application: optimal where panel real estate is at a premium. Feature: UL 489 listing and manufacturer-backed warranty → Business Impact: enhances regulatory compliance and provides predictable maintenance budgeting → Application: supports procurement and compliance teams in enterprise environments. The combination of these attributes translates into faster commissioning, lower lifecycle costs, and greater confidence in panel protection across industrial applications.
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FAQs
CHB340 is designed specifically for CH Loadcenters and features a three-pole configuration that matches the CH family wiring schemes. Its #8-4 AWG wire size and 240 V rating align with common CH Loadcenter requirements, enabling straightforward drop-in replacement or upgrade without reconfiguring bus bars or auxiliary wiring. This compatibility simplifies procurement and commissioning while reducing field modifications.
Key specs include a 40 A amperage rating, 240 V voltage rating, 3-pole configuration, and a 10 kAIC interrupt rating. The device accepts #8-4 AWG conductors and is UL 489 listed, which ensures compliance with recognized safety standards. These specs support reliable protection for typical industrial feeders and motor circuits within CH Loadcenters.
Yes, CHB340 is UL 489 listed, indicating compliance with recognized safety and performance criteria for circuit breakers. This certification supports regulatory compliance and acceptance in formal safety inspections. For ongoing assurance, refer to Eaton’s specification sheet and warranty documentation for installation guidance and service expectations.
CHB340 carries a limited lifetime warranty from Eaton, which provides long-term coverage for defects in materials and workmanship under normal use. Routine maintenance typically involves inspection for tight connections and proper mounting within the CH Loadcenter. Availability of replacement parts through Eaton helps minimize downtime and ensure consistent protection over the product lifecycle.
The three-pole CHB340, with its compact 3.3 in footprint and 0.6 lb weight, reduces enclosure space and simplifies wiring, allowing quicker installation and easier service access. Its compatibility with common CH Loadcenters means fewer custom configurations and faster commissioning, contributing to lower project timelines and improved overall efficiency in panel assembly and maintenance.