Siemens 5SY4525-5 — 25 A Type A MCB, 2-Pole, Current Production
The Siemens 5SY4525-5 is a SENTRON miniature circuit breaker rated 25 A at 35 °C, with a 2-pole (1P+N) design and tripping characteristic A. It carries a 10 kA interrupting rating per EN 60898 and 20 kA per IEC 60947-2, with a DC rating of 15 kA under IEC 60947-2.
Key Ratings & Fit
The 25 A rating holds at 35 °C; at 40 °C it derates to 23.8 A, and at 60 °C to 21.2 A. The Type A characteristic is designed for resistive and low-inductance loads where short-circuit protection is needed without nuisance tripping from inrush.
Touch protection is built in. The 2-MW width (36 mm) fits standard modular enclosures.