Q1-350 - 50 Amp Circuit Breaker

Q1-350 - 50 Amp Circuit Breaker

Safeguard your electrical system with confidence using the Q1-350 50-amp three-pole circuit breaker. Whether you’re in a residential or light commercial setting, this breaker offers reliable overcurrent protection and fault isolation in one compact package. Designed for maintenance and retrofit situations, it combines thermal-magnetic trip technology with a space-efficient form factor to give you dependable protection without hogging panel space. The plug-on interface ensures a fast, secure connection to compatible bus systems, minimizing installation time and error risk.

Key Features and Benefits

• 50A Nominal Rating: Handles robust current loads with margin for safety in typical branch circuits.
• Three-Pole Design: Delivers coordinated protection across all phases, essential for balanced multi-phase loads.
• Thermal-Magnetic Tripping: Accurately detects overloads and short circuits to interrupt fault currents before they cause damage.
• Compact Footprint: Occupies only six panel spaces, leaving room for future expansion or other protective devices.
• Plug-On Installation: Enables quick, tool-friendly mounting into compatible panel systems, reducing labor and downtime.
• Visual Trip Indicator (if available): Immediately shows which breaker has tripped, easing diagnostics.

Technical Specifications

• Amperage: 50 A
  
• Number of Poles: 3 (three-phase)
  
• Interrupting Rating (A.I.C.): 10 k A @ 240 VAC
  
• Frame Type: Q1
  
• Overall Dimensions:
  • Width: 2.25″
  • Length: 6.38″
  • Depth: 2.31″
• Weight (Ship): ~3.10 lb
  

Material Compliance and Certifications

• This circuit breaker is built to industry standards and designed for safety and durability. It is manufactured from high-grade insulating and conductive materials to withstand thermal cycling, vibration, and mechanical stress.
• It meets or exceeds relevant UL/IEC overcurrent protection standards (depending on model variation) to ensure long service life and reliable operation under real-world conditions.

Where It Works Best

• The Q1-350 is ideal for maintenance and retrofit work in both residential and commercial installations. Use it to replace aging or failed three-pole breakers in panelboards, switchgear, or distribution systems. It’s beneficial in systems where space is tight but reliable multi-phase protection is crucial—think motor feeders, three-phase lighting banks, or critical loads in mixed environments. Note: this unit is not intended for new system design upgrades; it’s optimized for maintenance, repair, and replacement scenarios.