Square D QMB3240MJ - Fusible Safety Switch 400A@240V (200kA AIC, NEMA 1)

Square D QMB3240MJ is a panel-mounted fusible safety switch designed for industrial power distribution protection. This 3-phase switch features a 240V voltage rating and 400A current capacity with a 200kA interrupting rating at 240V for robust short-circuit protection. The 65 lb NEMA 1-rated enclosure houses three J-class fuse poles in a single configuration, compatible with ED frames for flexible integration. UL-listed and built to industrial standards, it safeguards motor control centers and heavy machinery in demanding environments.

Key Features & Specifications

• Type: QMB Saflex fusible safety switch, panel mount
• Voltage Rating: 240V AC
• Current Rating: 400A
• Configuration: Single, 3-pole
• AIC Rating: 200kA@240V
• Fuse Class: J
• Phase: 3
• NEMA Rating: 1
• Compatible Frames: ED
• Weight: 65 lb
• Standards: UL listed
• Applications: Industrial power distribution, motor control centers