SENTRON 3VA2140-6JQ36-0AA0 — 40 A MCCB, 242 kA at 240 V, line protection
This 3-pole molded case circuit breaker from the SENTRON family is rated for 40 A continuous current and delivers a 242 kA breaking capacity at 240 V, dropping to 187 kA at 415 V and 121 kA at 500 V — at 690 V the interrupt rating is 3.7 kA. That wide spread tells you the part is sized for high-fault low-voltage distribution panels, not for 690 V motor circuits. It's a line-protection design, so it guards the feeder, not a specific load. The 40 A rating holds flat from 40 °C through 70 °C ambient — no derating needed in a warm enclosure up to that point. The part carries a communication function and ground-fault monitoring via summation current formation on the L-conductor. Rated insulation voltage is 800 V. Dimensions are 105 mm wide, 181 mm high, 86 mm deep — standard MCCB footprint for a 3-pole frame at this ampacity.
Panel fit & integration
Mounts into a standard DIN-rail or bolted bus-bar panel — 105 mm width fits a typical 3-pole MCCB slot. The 86 mm depth leaves room for rear bus connections and cable bending radius inside a 200 mm deep enclosure. No special cutout or adapter plate required for a SENTRON 3VA frame.