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QF250AH
The QF250AH from Siemens is a dual-pole Ground Fault Circuit Interrupter and miniature circuit breaker designed to enhance electrical safety. This unit operates with a rated current of 50 A and is compatible with 120/240 V AC systems, making it suitable for a range of applications.
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Technical specifications for QF250AH
| Manufacturer | Siemens |
|---|---|
| Product Type | Ground Fault Circuit Interrupter (GFCI) / Miniature Circuit Breaker |
| Product Line | Q Series |
| Part Number | QF250AH |
| UPC | 887621216764 |
| Poles | 2 Poles |
| Rated Current | 50 A |
| Rated Voltage | 120/240 V AC |
| Frequency Rating | 60 Hz |
| Interrupting Rating (Short Circuit Capacity) | 22 kAIC at 120/240 V AC |
| Ground Fault Sensitivity | 5 mA (Class A) |
| Mounting Type | Plug-on / Plug-in |
| Trip Type | Thermal-Magnetic |
| Frame Type | QPHF2 |
| Wire Range (Line/Load) | #14–2/0 AWG Cu/Al |
| Torque Rating (Terminal) | 36 lb-in |
The Siemens QF250AH serves as a crucial component in safeguarding electrical circuits as a Ground Fault Circuit Interrupter (GFCI) along with being a miniature circuit breaker. This device accommodates a rated current of 50 amperes, ensuring adequate protection in both residential and commercial installations. It supports a rated voltage of 120/240 volts AC and operates effectively at a frequency of 60 Hz.
Designed to handle fault currents, the short circuit interrupting rating reaches up to 22 kAIC at 120/240 V AC, affording robust performance during electrical surges. Additionally, the ground fault sensitivity is rated at 5 mA, classifying it as a Class A device, which is particularly effective in protecting against ground faults.
Installation of the QF250AH is convenient due to its plug-on or plug-in mounting method, facilitating straightforward integration into existing panels or configurations. The thermal-magnetic trip type provides reliable overload and short circuit protection, adapting well to fluctuating load conditions. This device is built on the QPHF2 frame design, ensuring durability and stability during operation.
The wiring capability of the QF250AH is versatile, supporting wire ranges from #14 to 2/0 AWG for both copper and aluminum conductors. To maintain secure connections, the torque rating for terminals is specified at 36 lb-in, which enhances electrical contact integrity. Overall, the QF250AH combines essential protective features and adaptability suitable for a variety of electrical systems.
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