SENTRON 5SJ4320-8HG42 – 3-pole 20 A miniature breaker, active production
What the ratings mean in the panel
Ingress protection is IP20 when conductors are connected, IP40 in the handle area — enough to keep dust and fingers out in most machine-side enclosures, but not rated for washdown.
How it stacks against the 5SJ4360-7HG41
Both are 3-pole SENTRON breakers in the same 54 mm (3-module) footprint, same mounting and environmental specs.