The Eaton NSB STS321FD3 is a heavy-duty three-phase fusible safety switch designed to safely disconnect power in 3-phase electrical systems. This 3-pole, 30A, 240V device uses a fusible design and is housed in a NEMA 3R enclosure. As part of Eaton’s NSB line, the STS321FD3 provides reliable isolation for circuits that require fused protection.
