What this MCCB is and what the ratings mean for your panel
The Siemens SENTRON 3VA2040-6HL32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 40 A continuous current, designed for line protection in distribution panels. The ETU320 electronic trip unit gives you adjustable overload and short-circuit protection curves, so you can coordinate selectivity downstream without swapping trip units. The 242 kA interrupting rating at 240 V means this breaker can safely clear a fault up to that level — critical for high-fault-capacity service entrances or transformer secondaries where available fault current is high. At 415 V and 440 V it still holds 187 kA, and at 500 V it's rated 121 kA; only at 690 V does it drop to 3 kA, so keep that in mind if you're on a 690 V system. The 800 V rated insulation voltage confirms it's built for 480/600 V class panels with margin. The continuous current rating holds flat at 40 A from 40 °C all the way up to 70 °C ambient — no derating needed in a warm enclosure. That's unusual for an MCCB and simplifies panel thermal calculations. The IP40 front protection means it's fine in a clean indoor panel but not for washdown environments. Mounting dimensions are 105 mm wide, 181 mm high, 86 mm deep — standard 3-pole MCCB footprint for DIN-rail or screw-mount panel integration.
How it compares to the 3VA1110-5ED32-0AA0 sibling
The closest functional peer in the SENTRON 3VA family is the 3VA1110-5ED32-0AA0. Both are 3-pole MCCBs with electronic trip units, but the 3VA1110 series is a physically smaller frame (typically 76 mm wide vs. 105 mm) with lower interrupting ratings — it won't match the 242 kA at 240 V that this 3VA2040 frame delivers. If your panel was specified around the 3VA1110-5ED32-0AA0, the 3VA2040-6HL32-0AA0 will not drop in without rewiring: the wider footprint and different mounting hole pattern mean a new drill template. Use the 3VA2040 when you need the higher fault-interrupt capacity or the flat 40 A thermal curve; stay with the 3VA1110 if panel space is tight and fault current is lower.