Overview
The Square D QOB225GFI is a 25 A, 120/240 VAC, two-pole Qwik-Gard ground-fault circuit interrupter with bolt-on mounting. It combines Class A 4–6 mA personnel ground-fault protection, common-trip thermal-magnetic overcurrent protection and a 10 kA interrupting rating for compatible QOB panelboards.
Key Features
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Protection: Class A GFCI sensing responds to low-level ground faults while the thermal-magnetic mechanism protects both poles from overloads and short circuits.
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Installation: The breaker bolts to the panel bus and uses pressure-plate load terminals plus a factory pigtail neutral for the sensing circuit.
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Compatibility: Use only in Square D panelboards and enclosures specifically listed for two-pole QOB-GFI breakers; verify panel labeling and system voltage.
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Performance: Rated 25 A, 2 poles, 120/240 VAC and 10 kAIC with common-trip operation.
Specifications
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Model: Square D QOB225GFI
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Electrical rating: 25 A, 2 poles, 1 phase, 120/240 VAC
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Interrupting rating: 10 kAIC
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Mounting and connection: QOB bolt-on; pressure-plate terminals; pigtail neutral
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Conductor range: 14–8 AWG
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Temperature and certifications: 40°C ambient rating; UL Listed and CSA Certified
Common Applications
- Two-pole equipment circuits that specifically require 25 A Class A ground-fault protection.
- Commercial or institutional QOB panelboards where bolt-on retention is required.
- Exact-model service replacement for QOB225GFI in a listed compatible installation.
