Eaton QPHW1040 Thermal-Magnetic Circuit Breaker - UL Listed
Part Number: QPHW1040
Quick Summary
Eaton Quicklag thermal magnetic circuit breaker reliably protects electrical circuits in industrial panels and machine control applications. Engineers often struggle with nuisance trips and limited coordination when expanding systems, which drives downtime and maintenance costs. UL Listed and CSA Certified provide regulatory assurance, HACR rated suitability supports HVAC-related protection, and industrial approvals enable reliable performance in harsh environments. Designed for plug-on mounting with fixed terminals and a 120/240 V rating, it offers fast installation and predictable lifecycle value for panel builders.
Product Information
Extended Description
QPHW1040 Eaton: Eaton Quicklag Type QPH Industrial Thermal-Magnetic Circuit Breaker,Industrial circuit breaker,40 A,22 kAIC,Single-pole,120/240 V,Thermal-magnetic,Q17,QPHW,Fixed,Non-Interchangeable
Product Name
Eaton Quicklag thermal magnetic circuit breaker
Catalog Number
QPHW1040
UPC
786679387108
Product Length/Depth
3 in
Product Height
0.9 in
Product Width
3 in
Product Weight
0.3 lb
Warranty
1 year
Compliances
HACR Rated
Certifications
UL Listed CSA Certified
Circuit breaker type
QPHW
Mounting Method
Plug-on
Number of poles
Single-pole
Terminals
Fixed
Type
Industrial circuit breaker
Amperage Rating
40 A
Interrupt rating
22 kAIC
Trip Type
T268
Voltage rating
120/240 V
Options
Non-Interchangeable
Quantity
17
The QPHW1040 uses thermal-magnetic protection with a 40 A rating and a 22 kAIC interrupt capability, which translates to rapid fault interruption and reduced equipment damage in high-current scenarios. This directly lowers downtime and maintenance costs for manufacturing lines and automation systems, while ensuring compliance with industrial safety standards. Its single-pole, fixed-terminal design enables robust, vibration-resistant wiring in tight control panels and motor control centers, simplifying retrofits and new installations alike. The plug-on mounting method speeds panel assembly, minimizes field wiring errors, and supports standardized downstream maintenance. With a 120/240 V rating and HACR suitability, the device is ideal for HVAC and related equipment, reducing nuisance trips in climate control applications. Certifications from UL and CSA provide regulatory assurance, while a 1-year warranty helps minimize total cost of ownership. The compact 3 in length and 3 in width footprint, plus a light 0.3 lb weight, fits densely populated panels without compromising performance, making it a dependable choice for industrial protection in Wiring & Connectivity projects. Non-Interchangeable options ensure precise specification adherence for upgrade and replacement programs, reinforcing system integrity and lifecycle planning.
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FAQs
Yes. The QPHW1040 uses plug-on mounting with fixed terminals, delivering a secure, vibration-resistant connection suitable for dense control panels. Verify panel cutouts and torque specifications per Eaton installation guidelines to ensure reliable performance and maintain electrical integrity during maintenance or retrofit projects.
The 22 kAIC interrupt rating indicates the maximum fault current the breaker can interrupt without damage. This level supports heavier fault currents typical in industrial environments, helping protect conductors and devices, reduce arc flash risk, and improve system reliability in motor control centers and feeders.
HACR-rated breakers are approved for HVAC equipment protection, reducing nuisance trips in air conditioning and heating circuit applications. For panel boards serving climate control systems, the HACR rating provides an extra layer of assurance that protective devices won’t trip unnecessarily during normal HVAC startup or operation.
The QPHW1040 is UL Listed and CSA Certified, confirming adherence to rigorous safety and performance standards. These certifications simplify compliance in regulated environments, support audits, and help procurement teams meet corporate and industry safety requirements for industrial circuits.
Plan for a 3 in by 3 in footprint with a 0.9 in height, plug-on mounting, and fixed terminals. Its 40 A rating and 120/240 V operation suit single-pole protection in compact panels. Keep a spare unit on hand for maintenance, and ensure panel voltage and fault-current levels align with the 22 kAIC interrupt capability.