Eaton QHCX2045 Miniature Thermal-Magnetic CB - UL Listed
Part Number: QHCX2045
Quick Summary
The Eaton QHCX2045 thermal-magnetic circuit breaker protects electrical circuits in industrial panels and control boxes. Engineers often struggle with nuisance trips and coordinating overload protection with fast short‑circuit response. UL Listed and CSA Certified, this device carries a 42 kAIC interrupt rating to help meet regulatory requirements and improve reliability in demanding environments. Designed for two-pole, 120/240 V operation, it fits into common wiring and connectivity configurations, streamlining installation and maintenance while supporting safer, more reliable power distribution across facilities.
Product Information
Extended Description
QHCX2045 Eaton: Eaton Quicklag Type QHCX Industrial Miniature Thermal-Magnetic Circuit Breaker,Miniature circuit breaker,45 A,42 kAIC,Two-pole,120 V/240 V,Thermal-magnetic,QHCX
Product Name
Eaton QC thermal magnetic circuit breaker
Catalog Number
QHCX2045
UPC
786679151655
Product Length/Depth
3 in
Product Height
4.8 in
Product Width
0.6 in
Product Weight
3 lb
Warranty
1 year
Certifications
UL Listed CSA Certified
Circuit breaker type
QHCX
Number of poles
Two-pole
Type
Miniature circuit breaker
Amperage Rating
45 A
Interrupt rating
42 kAIC
Trip Type
T268
Voltage rating
120/240 V
Feature: 42 kAIC interrupt rating paired with thermal-magnetic action provides robust short-circuit protection for industrial circuits. Business Impact: This level of interrupt capacity minimizes device arcing, protects downstream components, and reduces unplanned downtime, which translates to lower maintenance costs and improved machine availability. Application: Ideal for Eaton Quicklag QHCX family installations in panel boards and control boxes across manufacturing facilities, packaging lines, and automated workstations where high fault currents can occur. Feature: Thermal-magnetic protection blends accurate thermal overload sensing with magnetic instantaneous trip. Business Impact: Reduces nuisance trips during transients while delivering immediate response to true faults, improving uptime and extending motor and control circuit life. Application: Suitable for general-purpose protection in machine tools, conveyors, and process equipment where both overload and short-circuit events must be managed. Feature: Two-pole design supports multi-wire branch circuits and shared neutral configurations. Business Impact: Ensures proper coordination, simplifies wiring, and minimizes mis-wiring risk in complex panels. Application: Ideal for feeder circuits and control panel sections in factory automation lines. Feature: Compact dimensions and lightweight form factor enable easier mounting in crowded enclosures. Business Impact: Reduces panel footprint and installation time, supports faster replacements, and lowers installation labor costs. Application: Retrofit projects and new builds in compact control panels and wiring closets. Feature: Certifications and warranty provide regulatory assurance and support. Business Impact: UL Listed and CSA Certified status, plus a 1-year warranty, simplify procurement, compliance documentation, and ongoing service planning. Application: Used across facilities requiring verifiable compliance and dependable service life in safety-critical applications.
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FAQs
Yes. The QHCX2045 is designed as a two-pole, miniature circuit breaker intended for common panelboard and enclosure installations. Its compact depth of 3 in, height of 4.8 in, and width of 0.6 in align with typical Eaton Quicklag QHCX family configurations, enabling straightforward retrofit or new-build integration in wired panel setups.
Key specs include a 45 A nominal current rating, 42 kAIC interrupt capacity, and a 120/240 V operating range. The device is UL Listed and CSA Certified, two-pole construction, with thermal-magnetic trip characteristics designed for reliable protection of industrial circuits and motor loads.
The QHCX2045 provides general purpose protection with a thermal overload element and magnetic trip, suitable for many motor-driven loads and control circuits. For large motors or high inrush scenarios, verify coordination with upstream protection and panel guidelines to ensure full protection without nuisance trips.
The device is UL Listed and CSA Certified, which satisfy common electrical codes and safety standards in North America. These certifications help streamline regulatory documentation, supplier qualification, and risk management in capital projects and facility maintenance.
Eaton backs the QHCX2045 with a 1-year warranty, providing peace of mind for installation, commissioning, and ongoing operation. For procurement, you can reference the catalog number QHCX2045 and the certifications to simplify vendor validation and service planning.