DC-rated miniature circuit breaker for 440 V DC circuits
The Siemens 5SY5232-6CC12 is a 2-pole miniature circuit breaker from the 5SY5 series, rated for 440 V DC with a 10 kA breaking capacity and a B32 tripping characteristic.
DC application context
Rated for 440 V DC circuits, this breaker handles the higher arc extinction demands of DC compared to AC. The 10 kA interrupting capacity at that voltage level is sufficient for most industrial DC bus and sub-distribution applications. The 2-pole construction switches both the positive and negative lines, which is standard for DC protection in ungrounded or IT systems. Mounts on standard DIN rail in the enclosure.