The B-curve tripping characteristic suits resistive and general-purpose loads. Breaking capacity is 10 kA per EN 60898 at 110/120 V AC, 50 Hz — enough for most residential and light commercial distribution boards where the prospective short-circuit current stays under that threshold. The 2-pole (2P) form switches both phase and neutral, and the device is rated for overvoltage category III (distribution-level surge immunity) with pollution degree 2.
Derating and thermal reality — what the current numbers actually tell you
At 40 °C it's 37.6 A; at 50 °C it's 34.8 A; at 60 °C it's 32.4 A; at 70 °C it's 29.2 A.
Width is 54 mm (3 width units at 18 mm each), depth 77 mm, height 90 mm, with an installation depth of 70 mm into the distribution board. Supply can enter from either top or bottom, which saves time when you're retrofitting into an existing board with fixed busbar orientation.
Production status is current. This part is in active manufacture by Siemens under the SENTRON brand.