Overview
Genuine Square D by Schneider Electric miniature circuit breaker, model QO340. This is a standard plug-on (plug-in) 3-pole breaker rated for reliable overcurrent and short-circuit protection in compatible QO load centers, CSEDs, and panelboards.
These breakers are new, never installed or energized, and were supplied in factory bulk packaging of three units (not individual retail boxes). Photos show the actual breaker condition—clean, with original factory markings and no signs of use.
Key Specifications
Manufacturer: Square D / Schneider Electric
Series: QO
Model: QO340
Amperage Rating: 40 A
Poles: 3 (Common Trip)
Voltage Rating: 120/240 VAC (also suitable for 240 V systems; 48 V DC secondary rating)
Interrupting Capacity: 10 kA at 120/240 VAC
Trip Mechanism: Thermal-Magnetic
Mounting: Plug-On / Plug-In
Wire Range: AWG 8–2 (copper or aluminum)
Certifications: UL Listed, CSA Approved
HACR Rated: Yes
Condition: New – Unused, from bulk factory pack of three
Typical Applications
Branch circuit protection in residential and commercial panels
3-phase or multi-wire circuits for lighting, HVAC, motors, pumps
Sub-panels, equipment disconnects, and service upgrades
Installations requiring QO-compatible 40 A 3-pole breakers
QO series breakers are engineered for fast response, durability, and compatibility with Square D systems. For residential installations in a compatible QO load center, they carry Schneider Electric's limited lifetime warranty against defects in material and workmanship (per official residential warranty terms; commercial/industrial use is typically 18 months—refer to Schneider Electric documentation for full details).
Shipping
Overview
Genuine Square D by Schneider Electric miniature circuit breaker, model QO340. This is a standard plug-on (plug-in) 3-pole breaker rated for reliable overcurrent and short-circuit protection in compatible QO load centers, CSEDs, and panelboards.
These breakers are new, never installed or energized, and were supplied in factory bulk packaging of three units (not individual retail boxes). Photos show the actual breaker condition—clean, with original factory markings and no signs of use.
Key Specifications
Manufacturer: Square D / Schneider Electric
Series: QO
Model: QO340
Amperage Rating: 40 A
Poles: 3 (Common Trip)
Voltage Rating: 120/240 VAC (also suitable for 240 V systems; 48 V DC secondary rating)
Interrupting Capacity: 10 kA at 120/240 VAC
Trip Mechanism: Thermal-Magnetic
Mounting: Plug-On / Plug-In
Wire Range: AWG 8–2 (copper or aluminum)
Certifications: UL Listed, CSA Approved
HACR Rated: Yes
Condition: New – Unused, from bulk factory pack of three
Typical Applications
Branch circuit protection in residential and commercial panels
3-phase or multi-wire circuits for lighting, HVAC, motors, pumps
Sub-panels, equipment disconnects, and service upgrades
Installations requiring QO-compatible 40 A 3-pole breakers
QO series breakers are engineered for fast response, durability, and compatibility with Square D systems. For residential installations in a compatible QO load center, they carry Schneider Electric's limited lifetime warranty against defects in material and workmanship (per official residential warranty terms; commercial/industrial use is typically 18 months—refer to Schneider Electric documentation for full details).
Shipping
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