Siemens SENTRON 3VA1196-4EF32-0BC0 — 16 A MCCB with 121 kA Interrupting Capacity
The Siemens SENTRON 3VA1196-4EF32-0BC0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 16 A continuously at 40 °C ambient and delivering a 121 kA breaking capacity at 240 VAC — enough to handle high-fault utility feeds or transformer secondaries without cascading upstream. An integrated undervoltage release lets you trip the breaker on loss of control power, common in emergency-stop or safety circuits.
This MCCB's interrupting rating drops from 121 kA at 240 V to 75.6 kA at 415 V, then 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V (–). That steep derating above 480 V means the part is best matched to 240 V or 400 V distribution where fault currents are high. The 16 A rating holds flat from 40 °C through 55 °C (–), then derates to 15 A at 60 °C and above (–) — no surprise for a 3VA frame, but worth noting if the breaker sits near heat sources in a crowded panel.
The 3VA1196-4EF32-0BC0 measures 130 mm high, 76.2 mm wide, and 70 mm deep (–). Three-pole construction with no communication module keeps the width tight for multi-breaker rows.