Siemens Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers – Duplex, Triplex, Quadplex are Circuit Protection Load Center Mains, Feeders and Miniature Circuit Breakers. Circuit breakers are intended for protection of your home’s wiring from high temperatures caused by excess current higher than the rating of the wire. Thermal magnetic circuit breakers are the key element for overload and short circuit protection of your electrical system. Reviews There are no reviews yet. Be the first to review “Siemens 15/30 amps Standard 3-Pole Circuit Breaker” Cancel replyYour email address will not be published. Required fields are marked *Your rating * Rate… Perfect Good Average Not that bad Very poor Your review *Name * Email * Save my name, email, and website in this browser for the next time I comment.