Siemens 3VA1196-4EF32-0DA0 — SENTRON MCCB for Line Protection
The Siemens 3VA1196-4EF32-0DA0 is a SENTRON molded case circuit breaker (MCCB) designed for line protection, rated 16 A at 40 °C with a 3-pole configuration. It carries a 121 kA interrupting capacity at 240 V, dropping to 75.6 kA at 415 V and 52.5 kA at 440 V — figures that govern its selectivity in high-fault-current distribution panels. The TM240 overcurrent release provides thermal-magnetic protection, and the built-in undervoltage release (UVR) trips the breaker when line voltage falls below a set threshold, preventing motor restart on brownout conditions.
Key Ratings & What They Mean for Your Panel
The 16 A rating holds across ambient temperatures from 40 °C to 55 °C, derating to 15 A at 60 °C and above — important for panels with limited airflow or elevated internal heat rise. The 800 V rated insulation voltage (Ui) gives headroom for 480 V and 600 V class systems. Power loss is 13.1 W maximum, a figure to account for in enclosure thermal calculations. Dimensions are 130 mm height, 76.2 mm width, 70 mm depth — a 3-inch-wide footprint that fits standard Siemens SENTRON panelboard mounting.
Integration — DIN Rail and Panel Fit
The 3VA1196-4EF32-0DA0 mounts on DIN rail (standard 35 mm) or directly to a panel via the supplied basic switch (order code 3VA11964EF320AA0). The undervoltage release coil requires a separate control voltage — verify polarity and suppression for the specific UVR variant. No communication function is built in; this is a standalone thermal-magnetic breaker, not a metering or communicating device.