Cutler Hammer QA-2533-B - Fusible Switch 2500A @480V (200kA AIC, NEMA 3R)

Cutler Hammer QA-2533-B is a bolted pressure fusible switch designed for high-current circuit protection in industrial power distribution systems. It features a 480V AC voltage rating and 2500A current capacity, housed in a rugged NEMA 3R-rated enclosure weighing 150 lb for durability in harsh environments. The switch complies with industry standards for 200kA interrupting capacity at 480V and integrates with THFK frames. Typical applications include main service disconnects, motor control centers, and heavy machinery power management.

Key Features & Specifications

• Type: Bolted pressure switch, fusible design, 3-pole single configuration
• Voltage Rating: 480V AC
• Current Rating: 2500A
• Dimensions: NEMA 3R enclosure (specific dimensions not provided)
• Standards: 200kA AIC @480V, Fuse Class L
• Applications: Industrial power distribution, motor control centers, service disconnects
• Phase: 3
• Poles: 3
• Compatible Frames: THFK
• Weight: 150 lb