QO21251021 - Schneider Electric (Square D) 2-Pole 125 A 120/240 V Shunt-Trip Circuit Breaker

QO21251021

QO21251021 is a 2-pole miniature molded-case circuit breaker manufactured by Schneider Electric (Square D), rated at 125 A for 120/240 V AC systems, and includes a factory-installed shunt-trip accessory (120 V AC control voltage) for remote tripping capability. The breaker features plug-in mounting, a breaking capacity of 10 kA at 240 V, VISI-TRIP indication, and a standard thermal-magnetic trip unit. The built-in shunt-trip allows the breaker to be actuated remotely via a control circuit, making it ideal for safety shutdowns, supervisory control, emergency stop circuits, or building automation integration.

• Part Number: QO21251021
• Manufacturer: Schneider Electric (Square D brand)
• Series / Family: QO Miniature Circuit Breakers
• Poles: 2-pole (common trip)
• Amperage Rating: 125 A
• Voltage Rating: 120/240 V AC
• Interrupting Rating: 10 kA at 240 V AC
• Mounting Style: Plug-in (load center style)
• Shunt-Trip Accessory: Factory-installed shunt-trip coil rated 120 V AC control circuit
• Features: VISI-TRIP window (visual trip indication), HACR rated, plug-on neutral design for faster install

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Specifications

• Part Number: QO21251021
• Manufacturer : Schneider Electric
• Brand : Square D
• Category : Circuit Breaker
• Item Subcategory : Molded Case
• Voltage : 240
• Amperage : 125
• Phase : 1
• Poles : 2
• AIC rating : 10kA@240V
• Connection : Plug-In
• Functions : LI - Long-Time and Instantaneous
• Protection : Thermal Magnetic

Product Data

• UPC : 785901088189
• Country of Origin : Mexico
• Dimensions : 3.5 in (89 mm) x 2.2 in (57 mm) x 2.9 in (74 mm) (Height x Width x Depth)
• Weight : 1 lb
• Wire Size : AWG 4 to AWG 2/0 Copper or Aluminum