Eaton CHF340SW Thermal Magnetic Circuit Breaker - UL Listed
Part Number: CHF340SW
Quick Summary
The Eaton CHF340SW thermal magnetic circuit breaker protects 120/240 V circuits in industrial panels. Engineers often struggle with nuisance trips and slow deployment when upgrading legacy systems. This unit is UL Listed 489 and HACR rated, with a CH Loadcenter-compatible CHF plug-on design, offering reliable protection and straightforward installation. By minimizing false trips and enabling common trip across three poles, it reduces downtime while supporting flexibility with #10-1/0 AWG Cu/Al conductors. In addition, the compact 0.9 lb package helps with panel density and service efficiency, aligning with maintenance best practices for modern electrical distributions.
Product Information
Extended Description
CHF340SW Eaton: Eaton CH thermal magnetic circuit breaker,Type CHF plug-on circuit breaker,40 A,10 kAIC,Three-pole,120/240V,CHF,Trip flag, common breaker trip,#10-1/0 AWG Cu/Al,CHF,Type CH Loadcenters,Switching neutral
Product Name
Eaton CH thermal magnetic circuit breaker
Catalog Number
CHF340SW
UPC
786680117152
Product Length/Depth
3.5 in
Product Height
3.25 in
Product Width
2.25 in
Product Weight
0.9 lb
Warranty
Limited lifetime
Compliances
HACR Rated
Certifications
UL Listed UL 489
Used with
Type CH Loadcenters
Type
Type CHF plug-on circuit breaker
Amperage Rating
40 A
Voltage rating
120/240 V
Trip Type
Trip flag
Circuit breaker type
CHF
Mounting Method
Plug-on
Neutral
Switching neutral
Interrupt rating
10 kAIC
Main circuit breaker
CHF
Wire size
#10-1/0 AWG Cu/Al
Number of poles
Three-pole
Feature: 40 A amperage rating and 120/240 V voltage rating → Business Impact: Delivers precise overcurrent protection for standard industrial loads while accommodating typical panel voltages, reducing wiring complexity. Application: Ideal for feeders and distribution circuits within Type CH Loadcenters. Long-tail keywords: 40A circuit breaker, 120/240 V protection, industrial feeder protection. Feature: Three-pole plug-on mounting with trip flag and common-trip capability → Business Impact: Simplifies installation, ensures synchronized isolation of all poles, and improves safety during maintenance. Application: Suitable for three-phase loads in compact installations. Long-tail keywords: CHF plug-on breaker, three-pole trip flag, common trip. Feature: 10 kAIC interrupt rating and wire size compatibility (#10-1/0 AWG Cu/Al) → Business Impact: Enhances fault clearance capacity and supports mixed conductor sizes, lowering replacement costs after fault events. Application: Industrial feeders with diverse wiring. Long-tail keywords: 10 kAIC, Cu/Al conductors, wire size compatibility. Feature: HACR rated and UL Listed 489 certification → Business Impact: Ensures compliance with energy-efficient and safety standards, reducing regulatory risk for HVAC and auxiliary equipment. Application: HVAC, HVAC-related electrical panels. Long-tail keywords: HACR rated, UL Listed 489, safety compliance. Feature: Type CHF plug-on compatibility and Type CH Loadcenter usage → Business Impact: Enables easy upgrade paths and faster project completion, minimizing downtime and total cost of ownership. Application: Retrofit and new panel installations. Long-tail keywords: Type CHF plug-on, Type CH Loadcenters, upgrade-friendly.
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FAQs
CHF340SW installs as a plug-on, three-pole device in Type CHF configurations within Type CH Loadcenters. It supports #10-1/0 AWG Cu/Al conductors and uses a common-trip mechanism with a trip flag, which simplifies maintenance and reduces the risk of partial de-energization. Ensure panel clearance and alignment with neighboring devices to maintain proper heat dissipation and accessibility.
CHF340SW is rated for 40 A at 120/240 V, with a 10 kAIC interrupt rating and a three-pole configuration. It features a plug-on mounting method, switching neutral capability, and is designed for use with Type CH Loadcenters. These specs support reliable protection for medium-demand circuits while meeting standard industrial safety requirements.
Yes. CHF340SW accepts copper or aluminum conductors in sizes up to #10-1/0 AWG. This flexibility supports diverse field wiring practices and sourcing preferences, enabling cost-effective installation across various applications. When selecting conductors, follow the device’s torque specifications and ensure proper insulation and terminations to maintain conductor integrity.
CHF340SW carries UL Listed 489 certification and is HACR rated, indicating compliance with safety and energy-use standards for motors, heating, and cooling equipment. This combination provides assurance for code compliance in commercial and industrial electrical panels and reduces regulatory risk during inspections or audits.
By delivering a reliable 10 kAIC interrupt rating, common trip across all poles, and plug-on installation, CHF340SW minimizes nuisance trips and reduces commissioning time. The Type CHF/CH Loadcenter compatibility enables straightforward upgrades, lowering total cost of ownership while improving system availability and ease of service over the lifecycle of the panel hardware.