RCBO for mixed-frequency fault detection
The Siemens 5SU1354-4KK06 is a SENTRON RCBO with a 6 A overcurrent trip (C-curve) and a 30 mA Type F residual current unit. The Type F characteristic detects AC pulsating, smooth DC, and mixed-frequency residual currents up to 1 kHz.
Breaking capacity and energy limitation
Energy limitation class 3 means the device limits let-through energy during a fault, reducing stress on downstream components and wiring.
Thermal derating — real-world current rating
The 6 A rating applies at 30 °C ambient. At 40 °C the continuous current derates to 5.7 A, at 50 °C to 5.4 A, and at 60 °C to 5.1 A. At 70 °C the usable current is 4.62 A.
Width is 36 mm (2 modular width units), depth 77 mm, height 90 mm. Mounts in any orientation on standard DIN rail.
This RCBO is in active current production.