Siemens QF240H GFCI Miniature Circuit Breaker
- 40A
- 2 Pole
- Plug-On
Quantity
Siemens QF240H - 40A GFCI Miniature Circuit Breaker
New
Quantity
Description
Rated 22 kAIC at 120/240V, this 40A thermal-magnetic breaker provides essential 5mA Class A ground-fault protection for residential and commercial circuits. It mounts into Siemens EQ, EQL, SEQ, EQG, PL, and ES series load centers using a standard plug-on connection. Designed to protect personnel in wet or damp locations as required by NEC code, the unit features Insta-Wire connectors and a factory-installed pigtail neutral. This legacy model is replaced by the newer QF240AH.Specifications
| Brand | Siemens |
|---|---|
| Part Number | QF240H |
| Series | QF |
| Amperage | 40A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens EQ, EQL, SEQ, EQG, PL, ES Series Load Centers |
| Wire Gauge | 8-6 AWG (Cu), 8-4 AWG (Al) |
| Max Wire | 6 AWG (Cu), 4 AWG (Al) |
| Min Wire | 8 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LIG |
| Trip Function | Long-Time, Instantaneous, Ground Fault |
| Trip Adjustability | Fixed |
| Special Classification | GFCI |
|---|---|
| Available Options | Padlock Attachment |
| Accessories | Pigtail Neutral Wire |
| Standards | CSA C22.2 No. 144, UL 489, UL 943 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Self-Test, High Interrupting Capacity |
Product FAQs
7 answersCan I install the Siemens QF240H in a Murray load center?
Yes. Siemens circuit breakers are UL listed for use in Murray load centers manufactured after January 2002. The Siemens QF series is a direct, code-compliant replacement for discontinued Murray MP-T and MP-GT ground fault breakers.
Can I use the QF240H in a Square D or Eaton panel?
No. The Siemens QF240H is not UL listed or classified for use in Square D, Eaton, or GE load centers. It must only be installed in compatible Siemens or Murray panels to maintain safety and code compliance.
What level of ground fault protection does the QF240H provide?
The QF240H provides Class A ground fault protection, meaning it is designed to trip when a ground fault of 5mA is detected. This satisfies NEC requirements for protecting personnel in wet or damp locations such as spas, pools, and bathrooms.
Does the QF240H require a plug-on neutral load center?
No. This breaker features a factory-installed pigtail neutral wire. It connects directly to the neutral bus bar, making it compatible with standard, non-plug-on neutral load centers.
What is the difference between the Siemens QF240 and the QF240H?
The primary difference is the interrupting capacity. The standard QF240 has a 10kAIC rating, while the QF240H is the high-interrupting version with a 22kAIC rating at 120/240VAC.
Is there a newer version of the QF240H available?
Yes. Siemens has transitioned to the newer QF240AH model, which includes updated automated self-test functionality to meet the latest UL 943 standards. However, the QF240H remains fully compatible with supported legacy enclosures.
What do the LIG trip functions mean on the QF240H?
The LIG designation indicates the breaker utilizes a thermal-magnetic trip unit with Long-Time (thermal overload protection), Instantaneous (magnetic short-circuit protection), and Ground-Fault (5mA leakage protection) trip functions.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 22 reviews.
- TSTHOMAS S.Verified BuyerReviewingSiemens QF220 - 20A GFCI Miniature Circuit BreakerI do not recommend this productRated 2 out of 5 stars3/30/26Double check correct version
I received the Q220”A” version. Superbreaker was easy to work with for a return.
- KHKarmen H.ReviewingSiemens QF120A - 20A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/31/23Very happy
I am a small contractor in MN and when I get to the hard to find or not readily available in out are I always turn to SuperBreakers, for great selection and quick shipping.
- KHKarmen H.ReviewingSiemens QF115A - 15A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/31/23Breaker
I am a small contractor in MN and when I get to the hard to find or not readily available in out are I always turn to SuperBreakers, for great selection and quick shipping.
- JHJeff H.ReviewingSiemens QF120AN - 20A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars1/26/23all good
all good
- DBDean B.ReviewingSiemens QF130 - 30A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/25/22Master Electrician
Lets me keep this short and simple.. Order from Super Breakers and you won’t be disappointed!!
Thank you for your business Super Breakers!