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The Siemens GNF321A is a General Duty Safety Switch designed for indoor applications with a NEMA 1 enclosure. This non-fusible switch operates at 240V AC and 30A, with a 3-pole, 3-wire configuration.
Key electrical specifications include a 7.5 HP power rating at 240V AC (3-phase) and 5 HP at 250V DC. It offers an interrupting rating of 10,000 AIC with Class K or H fuses, and 100,000 AIC with Class R fuses. The switch features a double break visible blade design for enhanced safety and oversized lugs for easy wiring.
Mechanical dimensions are 4.56 inches in width, 3.93 inches in depth, and 6.35 inches in height. The line and load terminals accommodate wire ranges from 14 to 8 AWG, with specific torque requirements for mechanical lugs. The enclosure meets NEMA Standard KS-1 and NEC wire bending space requirements.
This safety switch is built for durability and ease of use, with features like a quick-make, quick-break operating mechanism, positive two- or three-point mounting, and a highly visible red handle grip. Padlocking provisions are available for both the handle and cover.
The AC voltage rating is 240V.
The DC voltage rating is 250V.
The current rating is 30A.
The horsepower rating is 7.5 HP.
The horsepower rating is 5 HP.
It has 3 poles.
It features a NEMA 1 enclosure.