The Siemens SENTRON 3VA2140-5KP46-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 40 A continuous current, designed for line protection in distribution panels and switchgear. It carries a 187 kA interrupting capacity at 240 V, dropping to 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V — the high short-circuit ratings at common low-voltage levels mean it handles faults upstream without cascading, a key consideration for selective coordination studies.
Overcurrent release and communication
The breaker uses an ETU850 electronic overcurrent release, which provides adjustable trip curves and communication capability — the listing confirms a communication function is present, so this unit can integrate with a higher-level monitoring or energy management system over a bus protocol (typically PROFIBUS or PROFINET on the SENTRON platform, though the exact protocol is not specified here). The ETU850 release allows fine-tuning of long-time, short-time, and instantaneous pickup for selective coordination. Rated insulation voltage is 800 V, and the front face carries IP40 protection — suitable for installation inside a dead-front panel where the operator only accesses the handle and trip indicator (note: no trip indicator is present on this variant). Operating temperature range is -25 °C to 70 °C; storage range extends from -40 °C to 80 °C.
Dimensions and panel fit
Dimensions are 181 mm height, 140 mm width, and 86 mm depth. The 140 mm width matches the standard 4-pole MCCB footprint in the SENTRON 3VA range, so it drops into an existing busbar or lug kit layout without panel rework. Depth of 86 mm leaves clearance behind a 200 mm deep enclosure for wiring and lug access.