QBF32125TS - 125 Amp Circuit Breaker

QBF32125TS - 125 Amp Circuit Breaker

Get reliable overcurrent protection and neat installation flexibility with the QBF32125TS 125 A circuit breaker from Schneider Electric’s PowerPacT Q line. This three-pole breaker is ideal for 240 VAC systems where dependable protection and compact mounting are essential. Its thermal-magnetic trip unit reacts accurately to both overloads and short circuits, giving you confidence your circuits are safe. The design includes studs on both the line and load sides for busbar connection—so you don’t need extra nuts or washers—and a built-in push-to-trip button lets you manually test or shut down the circuit when needed.

Key Features and Benefits

• Thermal-Magnetic Trip Technology: Combines heat sensing and magnetic response for fast, precise protection against overloads and faults.
• High Interrupting Capacity: Rated 10 kA at both 208Y/120 VAC and 240 VAC, giving solid protection even under fault stress.
• Dual Stud Busbar Connection: Studs on both line and load ends simplify installation and save you from handling extra hardware.
• Manual Trip Button Included: Enables on-demand testing or emergency shutdown without external tools.
• Built for Long Life: Rated for 1,000 cycles under load and 5,000 cycles with no load, so it stands up to repeated use.
• Compact Footprint: At just 6.47 in × 4.50 in × 3.93 in (≈ 164.3 × 114.3 × 99.8 mm), it fits well in tight panel spaces.

Technical Specifications

• Rated Operational Voltage: 240 V AC, 50/60 Hz
• Line Rated Current: 125 A
• Poles: 3 (three-pole)
• Interrupting Rating:
  • 10 kA at 208Y/120 VAC
  • 10 kA at 240 VAC
• Trip Unit Type: Thermal-magnetic (magnetic hold: 1,200 A; magnetic trip: 2,400 A)
• Continuous Current Rating: 80% rating allowed
• Mounting: Unit mount (busbar or lug)
• Dimensions (H × W × D): 6.47 in × 4.50 in × 3.93 in (164.34 mm × 114.3 mm × 99.82 mm)
• Mechanical Durability: 1,000 cycles loaded, 5,000 cycles no load
• Electrical Connection: Studs both on line & load ends, torque ~28 N·m (247.8 lbf·in) for AWG 4–300 kcmil
• Operating Ambient Temp: 40 °C to 70 °C (104 °F to 158 °F)

Material Compliance and Certifications

• Standards & Certifications: Fully compliant with UL 489, CSA, NEMA, and NOM-003-SCFI standards.
• Green / Environmental Attributes: Green Premium certified; free of mercury, halogen-free and PVC-free design; meets RoHS and REACh requirements.
• Sustainability Focus: Designed to reduce environmental footprint, with clear disclosures and support for circular economy principles.

Where It Works Best

• This circuit breaker is a solid fit anywhere you need dependable protection for 240 VAC systems. It is especially useful in:
• Distribution panels, switchboards, or motor control centers
• Commercial or industrial plants handling moderate current loads
• Installations where space is tight—yet high performance is non-negotiable
• Environments requiring compliance with rugged and recognized standards
• Systems where manual testing (push-to-trip) or maintenance shutdowns are needed