The Schneider Electric C60H3P4AD is a Multi9 C60H miniature circuit breaker (MCB) with a D tripping curve, 4 A rated current at 40 °C, and 3 protected poles. The magnetic trip threshold of 10...14 x In means it tolerates starting surges up to 56 A peak before instantaneously opening, while the thermal-magnetic element handles sustained overloads.
This breaker carries a 30 kA Icu at 230...240 V AC and 15 kA Icu at 400...415 V AC, both per IEC 60947-2. For a 4 A MCB in a typical 230/400 V panel, that SCCR headroom allows full selectivity with upstream devices rated for 25 kA or higher—no need to oversize the main breaker just to protect this branch. At 125 V DC, the 2P series configuration gives 25 kA Icu; 3P gives 40 kA Icu, useful for DC distribution in telecom or UPS cabinets.
The 54 mm width (6 x 9 mm pitches) and 73 mm depth leave room for adjacent breakers and tunnel-type terminals that accept up to 25 mm² rigid or 16 mm² flexible conductors. The toggle actuator provides local ON/OFF indication and a contact position indicator confirms isolation status per IEC 60947-2.