Price: $13.15 - $10.39
(as of Jul 08, 2025 17:37:51 UTC – Details)
Siemens offers a wide array of thermal-magnetic circuit breakers that are the key element for overload and short-circuit protection of your home’s electrical system. To provide additional protection Siemens offers circuit breakers to protect against severe electrical shock or electrocution, mitigate the risk of electrical fires and protect against damaging surges and Voltage spikes. Circuit breakers are intended for switching and protection of your home’s wiring from high temperatures caused by excess current higher than the rating of the wire. While thermal-magnetic circuit breakers are the key element for overload and short-circuit protection of your electrical system, there are potentially dangerous conditions that do not involve over current. To ensure the warranty on a Siemens panel is not voided, the use of Siemens breakers is required. Siemens strongly recommends against the use of “used” breakers. The installation of used breakers in a Siemens panel will void the warranty on the panel. Siemens does not sell used breakers and has not approved any 3rd party sellers to do so.
Is Discontinued By Manufacturer : No
Product Dimensions : 2.7 x 2.5 x 0.9 inches; 4.97 ounces
Item model number : Q140
Date First Available : October 15, 2007
Manufacturer : Siemens -HI
ASIN : B000WUNRQ2
Country of Origin : China
Single pole, 40 Amp, 120V type QP Circuit Breaker
10,000 AIC interrupting rating
Siemens type QP circuit breakers provide easy plug-in connections in Siemens enclosures and the time saving insta-wire feature
Compatible with Siemens PL and ES series load centers
Use for overload and short-circuit protection of your electrical system
Customers say
Customers find the circuit breaker works well, particularly in Square D boxes, and appreciate its reliable performance and good value for money. The breaker is well-built, lasting over 5 years in line, and installs easily, snapping right into place without issues. They like its fit, especially in older Westinghouse panels, and consider it a good replacement option. While many customers consider it a good OEM breaker, some report issues with breakers breaking on first use.
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