The Siemens SENTRON 5SY4132-6CC is a 1-pole miniature circuit breaker with a B tripping characteristic, rated 10 kA breaking capacity per EN 60898 at 400 V AC. That B-curve means it trips at 3–5× rated current — standard for protecting residential and light commercial wiring where inrush isn't a concern.
For UL 1077 / CSA C22.2 No.235 installations, the rating drops to 5 kA. The 1-pole design switches the line conductor only; no neutral switching, so it's for single-phase branch circuits where the neutral is bonded elsewhere. Voltage range: rated 400 V AC for single-phase operation, with a maximum of 440 V AC in multi-phase or single-phase configurations. DC rating tops out at 72 V — useful for control circuits but not for 125 V DC battery banks. Frequency is 50/60 Hz, covering standard mains worldwide.
Occupies 1 modular width unit (18 mm wide,), so it fits standard 18 mm-per-pole spacing. Mounting position is any — horizontal, vertical, upside-down; the B-curve and thermal-magnetic trip aren't orientation-sensitive. Sealable for tamper-proofing in metering or security applications. Halogen-free and silicon-free — relevant for clean-room or high-reliability environments where outgassing could contaminate optics or contacts.