What this 4-pole MCCB does on the line
The Siemens SENTRON 3VA2140-7JP46-0AA0 is a 4-pole molded case circuit breaker rated for 40 A continuous current, with an ETU550 electronic trip unit. It's designed for line protection in distribution panels, and it carries a communication function for integration into a monitored network. The interrupting ratings are substantial: 330 kA at 240 V, 242 kA at 415 V or 440 V, and 187 kA at 500 V, dropping to 3.7 kA at 690 V — so it handles high fault currents at the lower voltages common in industrial switchgear. The 40 A rating holds flat across the full operating temperature range from -25 °C to 70 °C, with no derating needed. That's a practical advantage for a panel in a hot machine room or near a furnace line — you don't have to oversize the frame for ambient temperature.
Fit and panel integration
Dimensions are 181 mm high, 140 mm wide, 86 mm deep. It's a standard MCCB footprint for a 4-pole frame, so it will drop into most SENTRON panelboards and mounting bases without re-drilling. The IP40 front protection means it's fine for a dry indoor enclosure but not for washdown areas.