Zinsco Q115 Breaker Ef6 Pole 120 240V GTE Sylvania Type

Description:

The Zinsco / GTE Sylvania Type Q115 (EF6 style) circuit breaker is used in legacy electrical panels to provide overcurrent protection for 120/240V circuits. It is typically a 15 Amp breaker designed for Zinsco “Q” series load centers and is commonly installed in residential systems for lighting and small appliance circuits. Electricians use this breaker for replacement or maintenance of older Zinsco panels.

Applications:

The Zinsco Q115 breaker is widely used in residential electrical systems for branch circuits such as lighting, receptacles, and low-load equipment. Depending on configuration, it may function as a single-pole (120V) or part of a 2-pole setup (240V). It is specifically designed for compatibility with Zinsco/Sylvania panels, which are now considered obsolete but still in service in older installations.

Technical Specifications:

• Manufacturer: Zinsco / GTE Sylvania / T&B
• Model / Type: Q115 (Type Q series)
• Product Type: Circuit Breaker
• Poles: 1-pole (can be paired for 2-pole use)
• Current Rating: 15 Amps
• Voltage Rating: 120/240 VAC
• Mounting: Plug-in (Zinsco compatible)
• Interrupt Rating: ~10 kAIC (typical)
• Trip Type: Thermal-magnetic
• Function: Overcurrent and short circuit protection
• Status: Obsolete / discontinued (aftermarket replacements available)

Common Replacements:

• Connecticut Electric UBIZ0215 2‑Pole 15A Zinsco Replacement Breaker
• Square D HOM215 2‑Pole 15A Circuit Breaker
• GE THQP215 2‑Pole 15A Circuit Breaker