ZINSCO Q120 Single Pole 20 AMP Type Q Circuit Breaker 120 240 VAC
ZINSCO Q120 Single Pole 20 AMP Type Q Circuit Breaker 120 240 VAC
Description:
The Zinsco Q120 is a single-pole 20 Amp plug-in circuit breaker designed for legacy Zinsco and Sylvania electrical panels. It operates on 120/240 VAC systems and uses a thermal-magnetic trip mechanism to interrupt circuits during overload or short circuit conditions. This breaker is part of the Type Q series and is typically used as a direct replacement component in older load centers.
Applications:
The Zinsco Q120 breaker is commonly used in residential and light commercial branch circuits such as general-purpose outlets, lighting circuits, and small equipment loads. It is suitable for circuits requiring 20A protection, including kitchens, laundry areas, and garage receptacles. This breaker is specifically intended for use in Zinsco-compatible panels still in service.
Technical Specifications:
• Manufacturer: Zinsco / GTE Sylvania / Challenger / T&B
• Model / Part Number: Q120 / Q20
• Product Type: Circuit Breaker
• Poles: 1-Pole
• Current Rating: 20 Amps
• Voltage Rating: 120/240 VAC
• Interrupt Rating: ~10 kAIC
• Mounting: Plug-in (Type Q panel compatible)
• 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• Status: Obsolete / discontinued (surplus or aftermarket replacements available)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 20A 1-Pole Circuit Breaker
• Square D QO120 / HOM120 20A 1-Pole Breaker
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