GTE Sylvania ZINSCO QFP24 2 pole 150 amp 240v QFP Circuit Breaker FLAWED

Description:

The Zinsco / GTE Sylvania QFP24 (QFP2150) 2-Pole 150 Amp Circuit Breaker is used in electrical distribution systems to provide overcurrent protection for 240V circuits. Commonly installed in legacy Zinsco and Sylvania panelboards, it protects feeders, subpanels, and high-load equipment. Electricians and maintenance personnel use this breaker for repair, retrofit, or replacement to maintain safe electrical operation in older systems.

Applications:

The Zinsco QFP24 breaker is widely used in residential and commercial main or feeder circuits where high current capacity is required. It is typically installed as a main breaker or large feeder disconnect, protecting service entrances, distribution panels, and heavy electrical loads. This breaker is specifically designed for Zinsco/Sylvania systems and is commonly found in legacy installations still in service today. 

Technical Specifications:

• Manufacturer: Zinsco / GTE Sylvania
• Model / Part Number: QFP24 / QFP2150
• Product Type: Molded Case Circuit Breaker
• Poles: 2-Pole
• Current Rating: 150 Amps
• Voltage Rating: 240 VAC
• Mounting: Plug-in / bolt-on (panel dependent)
• Interrupt Rating: ~10 kAIC @ 240V
• Trip Type: Thermal-magnetic (LI function)
• Phase: Single-phase
• Function: Main/feeder overcurrent protection
• Status: Obsolete / discontinued (typically surplus or refurbished)

Common Replacements:

• Connecticut Electric UBITBFP1502 (QFP2150 replacement breaker)
• Siemens JXD2B150 Molded Case Circuit Breaker
• Eaton Series C 150A 2-Pole Breaker