The Siemens 5SL4320-7RC is a SENTRON miniature circuit breaker, 3-pole, C-curve, rated 20 A at 415 V AC, with a breaking capacity of 10 kA per EN 60898. It occupies a single modular width (18 mm) and mounts in any position, with an IP20 rating when conductors are connected.
At 18 mm wide (1 MW), 76 mm deep, and 90 mm tall, this breaker fits standard DIN-rail enclosures. Installation depth is 70 mm. The sealable design and halogen-free, silicon-free construction suit residential and infrastructure panels where cleanliness or offgassing matters.