What the ratings mean for the panel
The 3VA1220-5MH32-0BH0 is a 3-pole SENTRON molded case circuit breaker rated 200 A continuous current at 40 °C, with a TM120M thermal-magnetic release — meaning the thermal element handles overload protection and the magnetic element handles short-circuit interruption up to 187 kA at 240 V. The interrupting rating drops to 121 kA at 415 V, 30 kA at 440 V, and 17 kA at 690 V, so the voltage class of your distribution panel determines which fault-current number governs the SCCR calculation. The starter protection version means the release curve is shaped for motor-starting inrush — it rides through the momentary surge without nuisance tripping, then clears a locked-rotor fault. The continuous current is flat at 200 A from 40 °C through 50 °C, then derates to 192 A at 55 °C, 188 A at 60 °C, 184 A at 65 °C, and 180 A at 70 °C. If the breaker lives in a non-ventilated enclosure near other heat sources, use the 70 °C column for your ampacity check — that 180 A floor is the real limit, not the 200 A nameplate. The auxiliary contact configuration is 2 auxiliary switches plus 1 trip alarm switch HQ. The HQ designation means the trip alarm signals a separate contact that changes state only on a fault trip, not on manual switching — useful for remote fault annunciation in a PLC input.
Panel fit and integration
Dimensions are 158 mm height, 105 mm width, 70 mm depth. Front IP40 keeps tools and fingers out. The undervoltage release (UVR) is built in. When control voltage drops below the dropout threshold, the UVR trips the breaker — standard practice for motor starters that must not auto-restart after a power dip. The latching endurance is rated 15 000 operations, which is typical for an MCCB used in a motor branch circuit where the breaker is switched infrequently (the contactor handles daily cycling).