ZINSCO QB24-1015 N 15A 1P 120V Single-pole Molded Case Circuit Breaker QB241015

Description:

The Zinsco QB24-1015 N is a 15 Amp, single-pole molded case circuit breaker designed for use in Zinsco / GTE Sylvania panelboards. It operates on 120V systems and features a thermal-magnetic trip mechanism that protects circuits from overloads and short circuits. This breaker belongs to the QB24 series and uses a bolt-on mounting style, providing a secure connection to the panel bus for reliable electrical performance.

Applications:

The Zinsco QB24-1015 breaker is commonly used in residential and light commercial electrical systems for branch circuits such as lighting, receptacles, and low-load equipment requiring 15A protection. It is typically installed in Zinsco bolt-on panels found in older installations. Due to its discontinued status, it is often replaced with modern equivalents when upgrading or maintaining legacy systems.

Technical Specifications:

• Manufacturer: Zinsco / GTE Sylvania / Challenger
• Model / Part Number: QB24-1015 N
• Product Type: Molded Case Circuit Breaker (Bolt-On)
• Poles: 1-Pole
• Current Rating: 15 Amps
• Voltage Rating: 120 VAC
• Mounting: Bolt-on (QB series)
• Trip Type: Thermal-magnetic
• Interrupt Rating: ~10 kAIC
• Function: Overcurrent and short circuit protection
• Status: Obsolete / discontinued

Common Replacements:

• Square D QO115 1-Pole 15A Circuit Breaker
• Siemens Q115 1-Pole 15A Circuit Breaker
• Connecticut Electric UBIZ15 1-Pole 15A Zinsco Replacement Breaker