Overview
The Siemens QF250A is a 50 amp, 120/240 volt, two-pole Type QPF Class A ground-fault circuit interrupter for compatible Siemens plug-in load centers. It combines Class A GFCI sensing with thermal-magnetic overcurrent protection and a 10 kA interrupting rating.
Key Features
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Ground-fault protection: Class A GFCI protection helps disconnect the circuit when a ground-fault condition is detected.
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Installation: Plug-in breaker with a factory neutral pigtail; load conductors terminate at box lugs.
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Compatibility: Type QPF for Siemens load centers specifically listed for this breaker family.
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Standards: UL 489 circuit-breaker and UL 943 GFCI references.
Specifications
- Manufacturer part number: QF250A
- Series / frame: QPF
- Current rating: 50 A
- Voltage rating: 120/240 V AC
- Poles / phase: 2 poles / 1 phase
- Protection: Class A GFCI, thermal-magnetic
- Interrupting rating: 10 kA
- Mounting: plug-in
- Neutral connection: pigtail neutral
- Load terminals: box lugs
- Conductor range: 8–4 AWG
- Temperature calibration: 40°C
Common Applications
- Two-pole 50 A circuits requiring Class A ground-fault protection.
- Spas, hot tubs, pool equipment, and outdoor equipment circuits when specified by the system design.
- Compatible Siemens load centers listed for Type QPF breakers.
- Exact-catalog replacement for Siemens QF250A.
