What this RCBO is and what it does in the panel
The Siemens SENTRON 5SV9316-7NK06 is an RCD-operated circuit breaker — an RCBO — combining overcurrent protection and residual current detection in a single 1 MW (18 mm) module. It's rated 6 A with a C tripping characteristic, 30 mA residual sensitivity, Type A (pulsating DC and AC fault currents), and a 6 kA breaking capacity per EN 60898 and IEC 60947-2. That 6 kA rating means it can safely interrupt a fault current up to that level without welding its contacts or cascading the fault upstream — critical for panel coordination in a sub-distribution board. The C-curve means the magnetic trip operates at 5 to 10 times rated current (30–60 A), so it's sized for moderate inrush loads like small motor starters, lighting banks, or control transformers — not for high-inrush capacitive or transformer loads (those want a D curve), and not for purely resistive loads where a B curve would give tighter protection. The 30 mA residual trip threshold covers personnel protection (hand-to-hand or hand-to-ground fault path) per IEC 60364.
Temperature derating — the number that actually governs your load
The 6 A rating holds at 30 °C ambient. At 40 °C it derates to 5.64 A; at 45 °C to 5.46 A; at 50 °C to 5.22 A; at 55 °C to 5.04 A. If this RCBO lives in a crowded enclosure or near a heat source, size the upstream load against the derated figure, not the 30 °C headline. A 5.5 A continuous draw at 50 °C is fine; a full 6 A at that temperature will nuisance-trip on thermal overload.
Panel fit and installation constraints
Snaps onto DIN rail (35 mm EN 60715) in any mounting position. The 18 mm width (1 MW) means it occupies one modular slot — tight for a 1P+N RCBO with both overcurrent and RCD in one unit. Depth is 77 mm (70 mm installation depth behind the panel surface). Supply can enter from top or bottom; the design is instantaneous (no intentional time delay on the RCD element), so it's not suitable for selectivity with downstream Type G/S delayed RCDs — coordinate on time grading if used in a multi-level RCD scheme. IP20 rating applies only when installed in a distribution board with conductors connected — the terminals are finger-safe but the module itself is not sealed against dust ingress. Pollution degree 2 (non-conductive dust, occasional condensation) and overvoltage category III (fixed installation downstream of the main distribution board) are the expected environment.
Compliance and documentation
Halogen-free and silicon-free construction (no silicone outgassing issues in clean environments or near sensitive contacts). Energy limitation class 3 means it limits let-through energy below the threshold for most downstream equipment damage. Insulation voltage rated 264 V; surge voltage resistance 4 000 V; surge current withstand 1 kA (8/20 μs waveform). The manufacturer provides EN/IEC declaration of conformity and CE marking; RoHS and REACH compliance documentation is standard with the SENTRON series.