Rating and application context
Its interrupting capacity reaches 187 kA at 240 VAC, 121 kA at 415 VAC, and 75.6 kA at 500 VAC, making it suitable for high-fault-current distribution panels where selectivity and SCCR headroom are specified. For panel integration, the breaker occupies 140 mm width by 181 mm height by 86 mm depth (–). The 4-pole frame fits standard Siemens mounting plates and busbar systems; verify gland-plate cutout against the 140 mm width before layout freeze. The 48 W maximum power loss should be factored into enclosure thermal calculations, particularly in sealed or high-ambient cabinets.
Thermal derating and operating envelope
Above 50 °C, the continuous rating declines linearly: 241 A at 55 °C, 232 A at 60 °C, 222 A at 65 °C, and 213 A at 70 °C (–). For a panel located in an unconditioned space or near heat-generating equipment, the 55 °C derating point is the practical design limit before capacity reduction must be reflected in the load schedule.