The 3150 Series is a single-pole, single-throw temperature switch operated by a snap-action bimetal disc. Factory pre-set for specific temperature points, each unit undergoes thorough thermal and mechanical inspection. Available in configurations for opening or closing on temperature rise, it features a hermetically sealed steel housing with laser-welded construction and a glass-to-metal terminal seal. Its low-profile and compact design make it ideal for applications requiring miniaturization.