Eaton QPHW3045H Thermal-Magnetic Circuit Breaker - UL Listed
Part Number: QPHW3045H
Quick Summary
Eaton QPHW3045H is a thermal-magnetic circuit breaker used to protect industrial power distribution enclosures and machinery. Designers and maintenance teams often battle nuisance trips and downtime from undersized protection. It carries HACR rating with UL Listed and CSA Certified compliance for global deployments. With plug-on mounting and fixed terminals for three-pole 240 V circuits, it fits standard panels and OEM builds. This combination delivers reliable protection, faster commissioning, and reduced total cost of ownership across industrial environments. Rated 45 A with a 22 kAIC interrupt rating and a trip type T268, it offers precise coordination with upstream protective devices. The 1 lb compact form factor and 3.4 in by 3.5 in by 3 in footprint simplify installation in crowded panels.
Product Information
Extended Description
QPHW3045H Eaton: Eaton Quicklag Type QPH Industrial Thermal-Magnetic Circuit Breaker,Industrial circuit breaker,45 A,22 kAIC,Three-pole,240 V,Thermal-magnetic,Q32,QPHW,Fixed,Non-Interchangeable
Product Name
Eaton Quicklag thermal magnetic circuit breaker
Catalog Number
QPHW3045H
UPC
786679152027
Product Length/Depth
3.4 in
Product Height
3.5 in
Product Width
3 in
Product Weight
1 lb
Warranty
1 year
Compliances
HACR Rated
Certifications
UL Listed CSA Certified
Circuit breaker type
QPHW
Mounting Method
Plug-on
Number of poles
Three-pole
Terminals
Fixed
Type
Industrial circuit breaker
Amperage Rating
45 A
Interrupt rating
22 kAIC
Trip Type
T268
Voltage rating
240 V - 240 V
Options
Non-Interchangeable
Quantity
32
Feature: Thermal-magnetic protection in a 3-pole design provides fast magnetic trips for short circuits plus steady thermal protection for overloads. Business impact: This reduces nuisance trips, extends equipment life, and minimizes unplanned downtime in continuous-process lines. Application: Suitable for 240 V three-phase distribution in manufacturing cells and control panels.Feature: 45 A rating with a 22 kAIC interrupt capacity. Business impact: It handles motor starts and fault currents with reliable interruption, improving arc-flash safety margins and system resilience. Application: Large motors and feeders in automation lines where precise trip coordination is essential.Feature: Plug-on mounting with fixed terminals for three-pole assemblies. Business impact: Speeds up installation, simplifies wiring, and reduces field rework while preserving secure connections. Application: OEM panel builders and service technicians assembling new equipment or upgrading legacy panels.Feature: HACR rated plus UL Listed and CSA Certified. Business impact: Ensures compliance with electrical codes across regions, easing procurement and certification workflows. Application: HVAC and general industrial equipment in North American and international facilities.Feature: Compact 1 lb body with 3.4 x 3.5 x 3 in footprint. Business impact: Saves panel space, increases packing density, and lowers shipping and handling costs. Application: Space-constrained electrical control panels and small switchgear housings.Feature: Fixed terminals and robust three-pole construction. Business impact: Delivers dependable connection integrity and safe, durable operation in harsh industrial environments. Application: New installations and retrofits in machine shops, process lines, and distribution panels.Feature: 1-year warranty provides support post-installation. Business impact: Reduces lifecycle risk and supports preventive maintenance programs. Application: Any modular industrial plant where ongoing protection and serviceability matter.
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FAQs
The QPHW3045H is designed for 240 V three-phase systems and installs with plug-on mounting and fixed terminals. It fits standard industrial panels and OEM enclosures, particularly where space is limited. The three-pole configuration provides balanced protection across all phases, simplifying wiring audits and field commissioning for new builds or upgrades.
Key performance specs include a 45 A amperage rating and a 22 kAIC interrupt capacity, paired with 240 V line voltage and a T268 trip characteristic. This enables rapid fault interruption while reducing nuisance trips on normal load changes. In practice, it supports reliable motor protection and upstream coordination with feeders and other protective devices in manufacturing environments.
Yes. With HACR rating plus UL Listed and CSA Certified, the QPHW3045H is appropriate for HVAC equipment as well as broader industrial automation panels. Its 45 A, 240 V three-pole design handles three-phase loads and motor circuits, while plug-on mounting and fixed terminals simplify retrofits and new builds in tight electrical rooms.
Consider UL Listed and CSA Certified status plus HACR rating, which indicate compliance with North American electrical codes and HVAC-specific requirements. The device’s fixed terminals and plug-on mounting support robust installation practices and safer, code-compliant panel builds. For global projects, verify compatibility with local standards and maintain a clear certification trail in your BOM.
Using this breaker offers measurable ROI through reduced downtime, fewer nuisance trips, and lower maintenance labor. The 1-year warranty provides assurance against defects during early use, while UL and CSA certifications streamline procurement and reduce regulatory risks. In long-term plans, compatibility with the Eaton Quicklag family simplifies spares management and gear upgrades.