The Siemens SENTRON 3VA1132-6EF32-0CH0 is a 3-pole molded case circuit breaker rated for 32 A continuous current (Iu) with a TM240 thermal-magnetic release, designed for line protection in distribution panels and motor branch circuits. It carries a 220 kA interrupting capacity at 240 V — enough to handle high-fault utility feeds — and derates to 17 kA at 690 V. The breaker includes an undervoltage release (UVR) and a set of 2 auxiliary switches plus 1 trip alarm switch (HQ version), so it's ready for remote status monitoring without adding a separate accessory module. Front IP40 protection keeps dust out of the enclosure face.
Interrupting capacity and thermal derating
The 220 kA at 240 V is the headline number for series-rating coordination with downstream breakers — it lets you use lower-rated branch breakers behind this main without losing selectivity. At 415 V the rating drops to 154 kA, at 440 V to 121 kA, and at 690 V to 17 kA. The thermal-magnetic TM240 release holds full 32 A from 40 °C through 50 °C; above that it steps down: 30.72 A at 55 °C, 30.08 A at 60 °C, 29.44 A at 65 °C, and 28.8 A at 70 °C. That matters if the breaker sits in a hot panel near a transformer or drive — you lose roughly 10 % of the continuous rating at the top of the ambient range.