Siemens 5SL4302-7CC — SENTRON 3-pole C-curve MCB, 2 A, 10 kA
The Siemens 5SL4302-7CC is a 3-pole miniature circuit breaker from the SENTRON 5SL series, rated 2 A with a C tripping characteristic and a 10 kA breaking capacity at 400 V AC per EN 60898. That 10 kA interrupting rating means it can clear a fault current up to 10,000 amps without welding its contacts or rupturing the enclosure — a standard requirement for residential and light-commercial panelboards where the prospective short-circuit current stays under that threshold.
Occupies 3 modular width units — 54 mm wide — and requires 70 mm of clear installation depth behind the panel surface. The 76 mm overall depth includes the housing and terminals; plan for front-access wiring clearance.
Rated for ambient temperatures from -40 °C to +75 °C, with a 95% humidity limit at +55 °C. Vibration resistance tested to 50 m/s² at 25–150 Hz per IEC 60068-2-6. Sealable — the toggle can be locked or sealed in the OFF position for lockout/tagout compliance.