Circuit breakers, three-pole, temperature compensated, rated currents 20 A to 50 A. Metric thread terminals. Product standard|Environment (working), Short-circuit currents, Electric terminals, Temperature, Switchgear, Fixing, Rated current, Bolts, Mass, Dimensional measurement, Tri-pole circuit-breakers, Designations, Electrical equipment, Circuit-breakers, Aircraft components, Tolerances (measurement), Dimensions, Holes, Quality assurance systems, Nuts, Height, ISO metric threads, Electrical protection equipment, Washers