Interrupting capacity and thermal derating
Its interrupting capacity hits 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V — the SCCR headroom you need at the service entrance or in a high-fault panel feed. The rated continuous current Iu is 20 A, and it holds that rating flat from 40 °C through 50 °C; above 50 °C it derates linearly to 18 A at 70 °C.
Dimensions are 76.2 mm wide, 130 mm high, 70 mm deep — a standard SENTRON 3VA footprint that drops into existing DIN-rail or screw-mount panel layouts without re-drilling. The front face carries an IP40 protection class, adequate for enclosed distribution boards. The integrated auxiliary trip order code is 3VA9688-0BL32.
Environmental range
Mechanical endurance is rated at 15 000 cycles.