The Siemens 5SL4605-8 is a SENTRON miniature circuit breaker — 4-pole 3P+N, D-curve, rated 0.5 A at 400 V AC.
Occupies 4 modular width units (72 mm wide, 90 mm tall, 76 mm deep, 70 mm installation depth). Neutral conductor is switched (3P+N), so it breaks all live poles. Sealable and touch-protected per the listing.
Thermal derating and service life
Rated 0.5 A at 30 °C; derates to 0.47 A at 40 °C, 0.46 A at 45 °C, and 0.43 A at 55 °C. Ambient range is -40 to 75 °C with up to 95% humidity. Halogen-free and silicon-free construction.