Rated breaking capacity reaches 100 kA at 240 V and 400 V, dropping to 2 kA at 690 V. At 240 V no upstream fuse is required; at 400 V the datasheet specifies a gL/gG 35 A backup fuse, and at 500 V or 690 V a gL/gG 25 A fuse. That means in a 400 V panel with a prospective fault current up to 100 kA, this breaker can clear the fault without relying on an upstream device — useful for high-SCCR installations.
The 45 mm width (three 15 mm module spaces) and 75 mm depth fit standard distribution boards and motor control center buckets. Clearance requirements: 20 mm above and below, 9 mm to the side, zero forward or backward. Any mounting position is permitted, so it can go sideways in a tight gland plate area without derating.
Listed as current production. This is not an NRND or phase-out line — the SIRIUS 3RV1 family remains the active motor-protection breaker platform from Siemens.