Zinsco Q20N U 20A 120V 1P Single-pole Circuit Breaker

Description:

The Zinsco Q20N U is a 20 Amp, single-pole circuit breaker designed for use in Zinsco and GTE Sylvania load centers. It operates on 120V systems and features a thermal-magnetic trip mechanism (Magnatrip style) to protect circuits from overloads and short circuits. This breaker uses a plug-in mounting design and is typically found in older residential electrical panels.

Applications:

The Zinsco Q20N breaker is commonly used in residential branch circuits such as kitchen outlets, laundry circuits, garage receptacles, and general-purpose wiring that require 20A protection. It is specifically intended for Zinsco-compatible panels, which are now obsolete but still present in legacy installations.

Technical Specifications:

• Manufacturer: Zinsco / GTE Sylvania
• Model / Part Number: Q20N U
• Product Type: Circuit Breaker
• Poles: 1-Pole
• Current Rating: 20 Amps
• Voltage Rating: 120 VAC
• Interrupt Rating: ~10 kAIC (typical class)
• Mounting: Plug-in
• Trip Type: Thermal-magnetic (Magnatrip)
• Function: Overcurrent and short circuit protection
• Status: Obsolete / discontinued (surplus or aftermarket replacements available)

Common Replacements:

• Connecticut Electric UBIZ20 1-Pole 20A Zinsco Replacement Breaker
• Siemens Q120 1-Pole 20A Circuit Breaker
• Square D HOM120 1-Pole 20A Circuit Breaker