The ABB TEYD3020B is a Type C Thermal Circuit Breaker with Overload Protection, designed for interior use in any room. It is a 3 pole, 20 amp breaker suitable for AC current with a voltage rating of 451-500V. The control style is a switch, and it features a bolt-on mounting style with a maximum operating temperature of 40°C (104°F). With a maximum amperage of 20 A and thermal overload protection, this circuit breaker offers reliable protection for industrial applications.