Siemens 5SY4132-7KK11 — 1-Pole C-Curve MCB, 32 A, Railway-Rated
It carries a rated current of 32 A at 35 °C, with derated values at elevated ambient temperatures: 30.46 A at 40 °C, 29.66 A at 45 °C, 28.86 A at 50 °C, 28 A at 55 °C, and 27.14 A at 60 °C. This MCB is explicitly designed for railway applications and mechanical engineering/industry use. The installation depth is 70 mm, with an overall depth of 76 mm. It is rated IP20 with connected conductors, suitable for installation in enclosed panels.
Integration — DIN-Rail Fit, Temperature Derating, and Pollution Class
The 18 mm width (1 MW) snaps onto any standard DIN rail. The mounting position is unrestricted — vertical, horizontal, or inverted all work. The energy limitation class is 3, which limits the let-through energy under fault conditions — relevant for coordinating with downstream equipment.
Compliance & Environmental — Halogen-Free, Silicon-Free, Touch Protection
The 5SY4132-7KK11 is halogen-free and silicon-free, meeting material restrictions common in railway, aerospace, and clean-room environments. It is sealable (can be padlocked in the OFF position for lockout/tagout) and includes touch protection on the terminals. The product is designated per IEC 81346-2 and DIN EN 61346-2 with the function code F (protective device).