What this MCCB does and where it fits
The Siemens SENTRON 3VA1032-3ED32-0CH0 is a 3-pole molded case circuit breaker (MCCB) rated for 32 A continuous current with a TM210 thermal-magnetic overcurrent release. It's built for line protection in distribution panels, motor control centers, and feeder circuits where you need reliable short-circuit interruption and overload protection in a compact 70 mm deep × 76.2 mm wide × 130 mm tall footprint. Breaking capacity runs from 75.6 kA at 240 V down to 7.5 kA at 690 V — so it handles high-fault service entrances on the low-voltage side and still carries industrial 690 V distribution without a fuse backup. The TM210 release provides a fixed thermal curve and magnetic trip. Rated insulation voltage is 800 V.
Thermal derating — what the numbers mean for a real panel
This MCCB carries its full 32 A rating from 40 °C through 50 °C ambient. At 55 °C it steps to 30.72 A, at 60 °C to 30.08 A, at 65 °C to 29.44 A, and at 70 °C to 28.8 A. If your panel runs hot — say next to a row of drives or transformers — you don't lose much, but you do lose some. Plan the load at 28.8 A if the enclosure ambient hits 70 °C. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. The IP40 front protection means it's fine in a clean indoor panel but not for washdown areas.
Auxiliary contacts and undervoltage release
Comes with 2 auxiliary switches plus 1 trip alarm switch (HQ designation). That gives you a remote status signal for the breaker position and a separate alarm contact that closes only on a trip event — useful for feeding a PLC input or a remote annunciator without extra interposing relays. The undervoltage release (UVR) is built in — part number 3VA9608-0BB24 for the release module. If your safety circuit or E-stop chain drops the control voltage, this trips the breaker automatically. No separate voltage trigger or communication module on this variant.