It carries the ETU340 electronic trip unit, which gives you adjustable long-time and instantaneous pickup settings — Ir adjustable up to 1000 A and Ii up to 10 000 A — so you can dial in the protection curve for the downstream load rather than swapping fixed-trip breakers. The line protection version means it's built for feeder and distribution duty, not motor branch circuit protection.
This breaker delivers 242 kA at 240 V, 187 kA at 415 V, and 74 kA at 690 V. The 690 V rating matters for 600 V class North American panels or 690 V European industrial grids.
At 60 °C it derates to 955 A, at 65 °C to 885 A, and at 70 °C to 815 A.
The lifecycle stage is listed as current — meaning Siemens still actively manufactures and supports this order code.
Dimensions: 280 mm wide, 320 mm tall, 120 mm deep. The 4-pole form factor means it occupies the full width of a standard MCCB mounting base. Front face is IP40 rated — protected against tools and small wires, but not washdown. The N-conductor protection is set at 100 %, meaning the neutral pole is fully rated and trips with the phase poles, which is standard for 4-pole distribution.