Siemens QF240AH Circuit Breaker – QF Series – 40A – 2 Pole – 120/240VAC – GFCI – Plug-On – 22kAIC

The Siemens QF240AH is a QF Series Ground Fault Circuit Interrupter (GFCI) circuit breaker designed to provide superior personnel protection and overcurrent protection in residential, commercial, and light industrial applications. Rated at 40A and 120/240VAC, this 2-pole breaker delivers Class A 5mA ground-fault protection and features a high interrupting capacity of 22kA at 120/240VAC.

Equipped with an automatic self-test and lockout function, the QF240AH continuously verifies proper operation throughout its service life, helping ensure reliable protection against electrical shock hazards. The breaker utilizes a pigtail neutral connection and is compatible with Siemens EQ, EQL, SEQ, EQG, PL, and ES load centers. For newer installations, this model has been superseded by the Q240GFH.

Specifications

• Brand: Siemens
• Part Number: QF240AH
• Series: QF Series
• Category: Ground Fault Circuit Interrupter (GFCI) Circuit Breaker
• Special Classification: GFCI (Class A)
• Mounting Type: Plug-On
• Configuration: 2 Pole
• Phase: 1 Phase
• Protection Type: Thermal Magnetic with Ground Fault Protection
• Trip Function Code: LIG
• Trip Functions: Long-Time, Instantaneous, Ground Fault
• Trip Adjustability: Fixed
• Standards: UL 489, UL 943, CSA C22.2 No. 144

Electrical Ratings

• Current Rating: 40A
• Voltage Rating: 120/240VAC
• Interrupting Capacity: 22kA @ 120/240VAC
• Ground Fault Trip Level: 5mA (Class A)
• Temperature Rating: 40°C

Construction

• Plug-on mounting configuration
• Pigtail neutral connection
• Thermal-magnetic trip mechanism
• Integrated Class A GFCI protection
• Automatic self-test functionality
• Lockout protection feature
• Common-trip operation
• High interrupting capacity design
• HACR-rated construction

Conductor Compatibility

• Copper Wire Range: 8–6 AWG
• Aluminum Wire Range: 8–4 AWG
• Minimum Wire Size: 8 AWG
• Maximum Wire Size: 6 AWG (Cu), 4 AWG (Al)

Functions

• Ground-fault protection (5mA Class A)
• Overload protection
• Short-circuit protection
• Automatic self-testing
• Long-time delay protection
• Instantaneous fault protection
• Simultaneous two-pole tripping

Applications

• Siemens EQ Load Centers
• Siemens EQL Load Centers
• Siemens SEQ Load Centers
• Siemens EQG Load Centers
• Siemens PL Load Centers
• Siemens ES Load Centers
• Spa and hot tub circuits
• Pool equipment installations
• Outdoor receptacle circuits
• Commercial GFCI applications
• HVAC equipment requiring GFCI protection

Certifications & Approvals

• UL Listed
• CSA Certified
• UL 943 GFCI Compliant
• HACR Rated

Returns are easy

You may return items within 30 days of delivery for a refund.

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