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The Siemens GF321NRA is a general duty, low voltage, fusible safety switch designed for reliable power control. This single-throw, 3-pole, 4-wire switch operates at 240V AC and is rated for 30A.
Key electrical specifications include a 3 hp rating at 240V AC single-phase, 7.5 hp at 240V AC three-phase, and 5 hp at 250V DC. It offers a short circuit current rating of 10 kA with Class H fuses or circuit breakers, and 100 kA with Class R fuses.
The switch is housed in a durable NEMA 3R enclosure, making it suitable for outdoor applications. It features a surface mounting design with lug terminals for secure wire termination. The operating temperature range is from -29°C to 85°C. Dimensions are 8.56 inches in height, 5.44 inches in width, and 2.75 inches in depth. The construction material is steel.
This safety switch incorporates visible blade, double-break switching action and padlocking provisions for enhanced safety. It is an enhancement of the legacy VBII design, offering new compact sizes for improved space efficiency and oversized lugs for a maximum wire range.
240V AC.
-29 to 85 °C.
10/100 kA (100 kA maximum with Class R fuses).
3 hp at 240V AC single phase, 7.5 hp at 240V AC three phase, and 5 hp at 250V DC.
NEMA 3R, suitable for outdoor use.
3 poles, 4 wires.
Surface mount with lug terminals.