General Electric THN3321 NEMA 1 Safety Switch

General Electric THN3321 is a 3-pole, 30-amp NEMA 1 safety switch for indoor installations. It provides a manual means to disconnect power to a circuit for service and maintenance. The 3-pole configuration supports three conductors, and the 30-amp rating indicates the maximum current it is designed to interrupt. The NEMA 1 enclosure signals indoor, non-weatherproof protection suitable for dry environments. As a GE product, the THN3321 is part of a safety disconnect lineup engineered to provide reliable circuit isolation in electrical installations where a dedicated disconnect is required near equipment or panels. This model uses a standard design approach associated with GE’s safety switch lineup, enabling straightforward replacement or integration in existing systems that specify a 3-pole, 30-amp indoor disconnect. When selecting a safety switch, customers typically consider the number of poles, the current rating, and the enclosure type to match their circuit’s requirements and the installation environment. The THN3321’s combination of 3 poles, 30 A, and NEMA 1 indoor enclosure defines its core capabilities and practical use in dry indoor spaces.