The Siemens SENTRON 5SY8432-7 is a 4-pole miniature circuit breaker with a C-trip characteristic, rated for 30 kA breaking capacity per IEC 60947-2 and 15 kA at DC per the same standard.
Ratings and compliance
DC-side rating is 60 V, maximum 72 V. The C-curve (tripping characteristic class C) means it holds up to 5–10× rated current briefly — typical for motor circuits and transformer inrush where nuisance tripping must be avoided. For UL 1077 and CSA C22.2 No. 235 installations, the AC rating is 5 kA. Approvals cover IEC / EN 60947-2 and UL 1077, so the breaker is accepted across most industrial and commercial jurisdictions. Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz, so it holds up on machine-mounted sub-panels.
Integration notes
Sealable with a lead seal — useful for revenue-metering or tamper-proof installations. Halogen-free and silicon-free construction, so it meets clean-room or coated-panel requirements where outgassing must be minimized.