Siemens 5SL3320-7CC — 20 A C-curve MCB, 3-pole, 4.5 kA
The Siemens 5SL3320-7CC is a SENTRON 3-pole miniature circuit breaker rated 20 A with a C tripping characteristic, breaking 4.5 kA per EN 60898 and IEC 60947-2 at 400 V AC.
Accepts solid or stranded conductors from 0.75 to 35 mm²; the screw terminals torque to 2.5–3 N·m. Mounts in any position, so it fits tight enclosures without derating for orientation.
Rated for ambient -25 to +45 °C, storage -40 to +75 °C, with periodic 55 °C at 95% humidity. Halogen-free and silicon-free construction. IP20 with connected conductors. Overvoltage category III, energy limiting class 3. Sealable and touch-protected. No neutral switching — this is a straight 3P breaker.