The Siemens SENTRON 5SY5102-6CC is a 1-pole miniature circuit breaker rated 2 A with a B tripping characteristic, designed specifically for DC circuits up to 220 V (250 V max) and a 10 kA interrupting capacity per IEC 60947-2. This is a DC-only breaker — the B-curve means it trips instantaneously between 3 and 5 times rated current (6–10 A), which suits resistive or lightly inductive DC loads like control transformers, power supplies, or relay banks where you want fast fault clearing without nuisance trips from inrush.
Width is 18 mm (1 modular unit), depth 76 mm, height 90 mm — snaps onto standard DIN rail via the quick-assembly system and can be mounted in any position.
Halogen-free and silicon-free construction, sealable for tamper-proofing. Operating temperature range -40 °C to 75 °C, with humidity derating above 55 °C. Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz.