It's an active-production part (lifecycle stage: current) from the 5SY7CC design series, built for industrial panel applications where high inrush currents from motor or transformer loads demand the D-curve's delayed magnetic trip. The D characteristic allows short-duration surges 10-20x rated current before tripping magnetically — suited for motor starting or capacitive loads that would nuisance-trip a B- or C-curve breaker. Breaking capacity is 30 kA per IEC 60947-2 and 5 kA per UL 1077 / CSA C22.2 No.235. The UL 1077 rating covers supplementary protection in North American panels.
Occupies 4 width units at 72 mm wide, so plan for 72 mm of DIN rail per breaker. Combined terminal top and bottom allow feed-through wiring or busbar connection. Sealable for lockout/tagout. IP20 with conductors connected — protected against finger contact, not for wet environments.
Ambient temperature range -25 to +55 °C operating, storage -40 to +75 °C. Halogen-free and silicon-free — relevant for sensitive electronics environments where outgassing could cause contact corrosion. Rated frequency 50/60 Hz. The part is classified per DIN EN 61346-2 and DIN EN 81346-2 as function code F — protective device. Suitability noted for mechanical engineering and industry. Neutral conductor switching is not integrated — this is a 4-pole breaker switching all four poles, but the neutral pole is not a switched neutral; verify the application requires a 4-pole device.