What the D-curve and breaking capacity mean for your panel
The Siemens Betagard 5SL7306-8RC is a 3-pole miniature circuit breaker with a D tripping characteristic, rated 6 A at 415 V AC. Breaking capacity is 15 kA per EN 60898 and 20 kA per IEC 60947-2, so it clears high-fault currents in industrial distribution without cascading upstream. The 18 mm width per pole (3 modular units total) snaps onto a standard DIN rail, and the 76 mm depth leaves room for wiring behind the gland plate.
Where it fits — panel integration and environment
Vibration-rated per IEC 60068-2-6, which matters for machine-mounted sub-panels on conveyors or compressors.
Compliance and documentation signals
Sealable design allows lockout/tagout. The Betagard brand is Siemens' value line for commercial and light industrial panels, distinct from the SENTRON residential range.