Zinsco QFP2150 2 Pole 150 Amp 240Vac QFP24 Circuit Breaker GTE Sylvania

Description:

The Zinsco QFP2150 is a 150 Amp, 2-pole molded case circuit breaker designed for use in Zinsco / GTE Sylvania / Challenger load centers. It operates on 240V systems and features a thermal-magnetic trip mechanism that provides protection against overloads and short circuits. It belongs to the QFP series and uses a plug-in (plug-on) mounting style for installation in compatible panels. Standard specifications confirm a 150A rating, 2 poles, and a typical interrupt rating of approximately 10 kAIC, with long-time and instantaneous (LI) trip functions.

Applications:

The Zinsco QFP2150 breaker is commonly used in residential and light commercial electrical systems as a main or feeder breaker for subpanels, service entrances, and distribution circuits requiring 150A protection. It is specifically intended for legacy Zinsco panels and is primarily used today for maintenance or replacement of existing installations rather than new construction. 

Technical Specifications:

• Manufacturer: Zinsco / GTE Sylvania / Challenger
• Model / Part Number: QFP2150 (QFP24 series)
• Product Type: Molded Case Circuit Breaker
• Poles: 2-Pole
• Current Rating: 150 Amps
• Voltage Rating: 240 VAC
• Mounting: Plug-in / Plug-on (QFP series)
• Trip Type: Thermal-magnetic (LI – long-time & instantaneous)
• Interrupt Rating: ~10 kAIC @ 240V
• Phase: Single-phase
• Terminals: Lug connections
• Function: Main/feeder overcurrent and short circuit protection
• Status: Obsolete / discontinued

Common Replacements:

• Connecticut Electric UBITBFP1502 2-Pole 150A Zinsco Replacement Breaker
• Siemens Q2150 2-Pole 150A Circuit Breaker
• Square D QOM2150VH / QOB2150VH 2-Pole 150A Circuit Breaker