QF240A | Siemens 40A 2-Pole 120/240V QF Series Ground Fault Plug-In Circuit Breaker
Siemens · HMIs & Displays
Description The Siemens QF240A is a 40A ground fault circuit breaker designed for residential and light commercial electrical systems requiring enhanced personnel protection. Operating at 120/240 VAC, it provides overload, short-circuit, and 5 mA ground-fault protection through an integrated thermal magnetic trip mechanism. Its plug-in design allows for easy installation in compatible panel boards. Technical Specifications Condition New/Never Used Surplus Brand Siemens Category Circuit Breaker Part Number QF240A Subcategory Molded Case Circuit Breaker Series Series QF Commercial/Residential Residential Voltage Rating 120/240 VAC Amperage Rating 40 A Interrupt Rating 10 kA Trip Type Thermal Magnetic Ground Fault Trip Range 5 mA Number of Poles 2 Connection Type Plug-In Terminal Type Lug Wire Size 8–6 AWG Mounting Type Panel Board Dimensions 2.88 in L × 2 in W × 2.38 in D Information About QF240A The QF240A is part of Siemens’ QF Series, a family of breakers developed to deliver Class A ground-fault protection in branch-circuit applications. Constructed with a molded-case housing and equipped with thermal magnetic trip functionality, it ensures reliable response to both overloads and short-circuit conditions. Its 2-pole configuration supports 120/240 VAC single-phase systems, providing balanced circuit protection. The breaker accommodates 8–6 AWG conductors and uses lug terminals for secure wiring connections. Compact in size and designed for panel board mounting, the QF240A integrates seamlessly into residential electrical systems requiring sensitive ground-fault protection. Key Features: 40A current rating: Suitable for mid-range residential branch circuits. 120/240 VAC operation: Ideal for standard single-phase distribution. 2-pole configuration: Protects both legs of a 240V circuit. 5 mA ground-fault trip: Provides Class A personnel protection. Thermal magnetic trip: Safeguards against overloads and short circuits. 10 kA interrupt rating: Handles significant fault currents safely. Plug-in connection: Enables quick installation in compatible panels. Lug terminals: Supports secure wiring with 8–6 AWG conductors. The QF240A delivers the reliability and precision required for safe, code-compliant protection in residential and commercial electrical systems.
Brand: Siemens · Category: HMIs & Displays
Key features
- 40A current rating: Suitable for mid-range residential branch circuits.
- 120/240 VAC operation: Ideal for standard single-phase distribution.
- 2-pole configuration: Protects both legs of a 240V circuit.
- 5 mA ground-fault trip: Provides Class A personnel protection.
- Thermal magnetic trip: Safeguards against overloads and short circuits.
- 10 kA interrupt rating: Handles significant fault currents safely.
- Plug-in connection: Enables quick installation in compatible panels.
- Lug terminals: Supports secure wiring with 8–6 AWG conductors.
Specifications
| Manufacturer part number | QF240A |
|---|---|
| Condition | New/Never Used Surplus |
| Brand | Siemens |
| Category | Circuit Breaker |
| Part Number | QF240A |
| Subcategory | Molded Case Circuit Breaker |
| Series | Series QF |
| Commercial/Residential | Residential |
| Voltage Rating | 120/240 VAC |
| Amperage Rating | 40 A |
| Interrupt Rating | 10 kA |
| Trip Type | Thermal Magnetic |
| Ground Fault Trip Range | 5 mA |
| Number of Poles | 2 |
| Connection Type | Plug-In |
| Terminal Type | Lug |
| Wire Size | 8–6 AWG |
| Mounting Type | Panel Board |
| Dimensions | 2.88 in L × 2 in W × 2.38 in D |
| Product type | 40 Amp GFCI Circuit Breaker |
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