The Siemens 3VA1116-4GD42-0AA0 is a 4-pole SENTRON molded case circuit breaker (MCCB) in the line protection version, carrying a rated uninterrupted current of 160 A at 40 °C through 50 °C, derating to 150 A at 70 °C. The interrupting ratings climb to 121 kA at 240 V AC and 75.6 kA at 415 V AC, meaning it can safely clear a bolted fault up to those levels without rupturing; at 690 V AC the rating drops to 11.9 kA, so verify available fault current at the installation point. The TM210 overcurrent release provides fixed thermal-magnetic protection — thermal for overload, magnetic for short-circuit — with no electronic adjustments or communication function.
This MCCB measures 101.6 mm wide by 130 mm tall by 70 mm deep — a 4-pole frame that occupies roughly four inches of panel width on a DIN rail or mounting plate. The 100% N-conductor protection means the neutral pole is fully rated and protected, not just switched — important for 4-wire systems where the neutral carries load current. An optional motor drive (product extension available) allows remote charging and closing for automated transfer schemes.
Maximum power loss is 38 W, which feeds into enclosure heat calculations — a panel with several such breakers needs ventilation or forced air to stay below the 70 °C operating maximum.