The Siemens 3VA1220-6EF42-0CA0 is a SENTRON molded case circuit breaker (MCCB) rated for 200 A continuous current with a 4-pole configuration, designed for line protection in distribution panels. Its TM240 thermal-magnetic release handles overloads and short circuits without external trip units — a fixed-setting breaker, not an electronic one, so what you see on the dial is what you get. The interrupting ratings are substantial: 220 kA at 240 V, 154 kA at 415 V, 36 kA at 440 V, and 17 kA at 690 V, which means it can sit upstream of smaller breakers in a high-fault-current installation without needing a current-limiting reactor upstream.
Ratings and what they mean for your panel
The 200 A rating holds flat from 40 °C to 50 °C, then derates to 194 A at 55 °C, 188 A at 60 °C, 182 A at 65 °C, and 176 A at 70 °C. If your panel ambient runs above 50 °C — say a packed enclosure near a furnace line — you lose 24 A by the time you hit 70 °C. Plan the load accordingly; don't assume the nameplate 200 A is available at your actual ambient. The 220 kA at 240 V is the headline number, but the 154 kA at 415 V is what matters for most European and Asian 400 V-class distribution. That's enough to coordinate with a transformer secondary rated 150 kA or less without an upstream current-limiting fuse. At 690 V the 17 kA still covers most industrial motor-control centers. Rated insulation voltage is 800 V, so it's suitable for 690 V systems with margin. The front face carries IP40 protection — fine for a closed panel, but not for washdown areas. No auxiliary contacts are fitted on this variant; if you need remote status, you'll add a separate auxiliary switch block.
Built-in undervoltage release
This 3VA1220-6EF42-0CA0 includes an undervoltage release (UVR) as the auxiliary release — part number 3VA9608-0BB24 for the integrated trip unit. That means the breaker trips if control voltage drops below a threshold, which is standard for safety circuits where a loss of control power should open the main breaker. No voltage trigger or shunt trip on this variant; the UVR is the only release type fitted.
Physical fit
Dimensions: 158 mm high, 140 mm wide, 70 mm deep. That 140 mm width across four poles is standard for a 200 A frame — it occupies the same footprint as other 3VA1 breakers in the same current class. The 70 mm depth means it fits a 200 mm deep enclosure with room for wiring gutters behind it. No communication module, no ground-fault monitoring on this variant; it's a straightforward thermal-magnetic breaker with UVR.