What this MCCB is and where it fits
The Siemens 3VA1180-5GD42-0AA0 is a SENTRON molded case circuit breaker (MCCB) in the 3VA platform, configured as a 4-pole line protection device with an 80 A rated continuous current (Iu) and a TM210 thermal-magnetic release. Rated insulation voltage is 800 V, and the maximum DC operational voltage is 600 V, so it covers both AC and DC distribution downstream of a rectifier or battery bank. The front face carries IP40 protection — suitable for enclosed panel mounting where tools or fingers won't contact live parts through the front bezel.
Breaking capacity — what the numbers mean for your fault level
This breaker delivers 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V. These are the maximum prospective fault currents it can safely interrupt at each voltage level — critical for verifying SCCR compliance at the service entrance or on a high-fault panel feed. At 415 V, the 121 kA rating covers most industrial distribution boards fed by a transformer of several MVA; at 690 V the 17 kA figure still handles typical motor-control-centre fault levels.
Thermal derating — don't lose capacity in a hot panel
The 80 A rating holds flat from 40 °C through 50 °C, then derates gradually: 78 A at 55 °C, 77 A at 60 °C, 75 A at 65 °C, and 74 A at 70 °C. If the breaker sits in a crowded enclosure that runs warm, use the 70 °C column — 74 A is the actual continuous current you can count on. Operating ambient range is -25 °C to +70 °C; storage range is -40 °C to +80 °C. The storage limit governs handling and warehousing, not running.
Lifecycle and sourcing posture
Maximum power loss is 19.2 W — a relevant figure for thermal budgeting inside a sealed enclosure, especially when multiple breakers are ganged.
Physical fit and optional motor drive
Dimensions are 130 mm high, 101.6 mm wide, 70 mm deep — a standard 4-pole MCCB footprint for DIN-rail or screw-mount panel integration. The 100% N-conductor protection design means the neutral pole is fully rated, not reduced. The product extension for a motor drive is available as an optional accessory, enabling remote electrical tripping or closing without manual actuation.