Square D QMB3240 - Fusible Safety Switch 400A@240V (200kA AIC)

Square D QMB3240 is a panel-mounted fusible safety switch designed for high-current industrial power distribution. The unit features a 240V AC voltage rating with a 400A current capacity and 200kA interrupting rating at 240V, housed in a rugged NEMA 1 enclosure weighing 65 lb. Its three-pole single-configuration design with Class R fuses meets stringent safety requirements for industrial applications. The switch is compatible with HHED frames and engineered for reliable operation in three-phase systems requiring robust circuit protection.

Key Features & Specifications

• Type: QMB Saflex fusible safety switch
• Voltage Rating: 240V AC
• Current Rating: 400A
• Configuration: Single
• Poles: 3
• Phase: 3
• AIC Rating: 200kA@240V
• Fuse Class: R
• NEMA Rating: 1
• Compatible Frames: HHED
• Weight: 65 lb
• Switch Style: Fusible
• Item Subcategory: Panel Mount