Square D QMB3400LAW - Circuit Breaker 400A 600V (18kA AIC @480V)

Square D QMB3400LAW is a UL-listed panel-mounted circuit breaker designed for industrial power distribution systems requiring 400A protection in 3-phase applications. This 600V-rated breaker features an 18kA interrupting capacity at 480V, housed in a 35-inch (889 mm) wide NEMA 1 enclosure with a robust LAP frame design. Compliant with UL standards, the single-configuration 3-pole breaker weighs 16.33 lb and is manufactured in the United States for reliable performance in commercial and industrial power management applications.

Key Features & Specifications

• Type: QMB Series E1-E2 molded case circuit breaker
• Voltage Rating: 600V AC
• Current Rating: 400A
• Dimensions: 35 in (889 mm) width
• Standards: UL LISTED
• Applications: Industrial power distribution
• Switch Type: Breaker
• Configuration: Single
• Poles: 3
• AIC rating: 18kA@480V
• Phase: 3
• Nema Rating: 1
• Breaker Type: LAP
• Compatible Frames: LAP
• Weight: 16.33 lb
• Country of Origin: United States

Product Identification

• UPC: 785901785064
• GTIN: 00785901785064