Siemens 5SV5414-0 SENTRON RCCB — 40 A, 100 mA, Type AC
The Siemens 5SV5414-0 is a 2-pole residual current operated circuit breaker (RCCB) from the SENTRON series, rated 40 A with a 100 mA tripping fault current, Type AC, for 230/400 V AC at 50 Hz networks. It carries a 6 kA short-circuit current rating per IEC 61008-1 and is designed for instantaneous switching — no short-time delay on the residual current detection. The 100 mA trip threshold makes this unit suitable for circuits where a 30 mA device would cause nuisance tripping — typically feeder or submain protection in commercial or industrial distribution boards, not final socket-outlet circuits where 30 mA is the norm for personal protection. The Type AC designation means it detects sinusoidal alternating residual currents only; it will not reliably trip on pulsed DC or smooth DC faults, so it belongs on purely AC loads like lighting, heating, and motor feeders without VFDs or rectified supplies. Snaps onto DIN rail (REG) per the 60 mm grid spacing, occupying 2 modular width units (36 mm). Mounting position is unrestricted — top or bottom feed accepted. Depth is 70 mm, which matches standard distribution board cutouts; the IP20 rating applies once the distribution board is installed with conductors connected.
Key Ratings & What They Mean
Rated at 40 A at 40 °C ambient — this is the continuous current the RCCB can carry without tripping on thermal overload. The 1.6 W power dissipation per pole at rated current should be factored into enclosure thermal calculations, especially in densely populated DIN-rail assemblies. Short-circuit current rating of 6 kA means the device can safely interrupt a fault up to 6 kA at overvoltage category III. The permissible let-through energy is 58 000 A²·s, and the maximum let-through current is 5 200 A. Operating temperature range is -25 °C to 45 °C ambient; storage range extends from -40 °C to 75 °C. The silicon-free construction (Product Feature Silicon-Free: Yes) matters for applications where silicone outgassing can contaminate contacts or optical surfaces — common in automotive paint shops or clean-room adjacent panels.
Integration Notes
Occupies 2 modular width units (36 mm) on a 60 mm grid DIN rail. No auxiliary contact or shunt-trip add-ons are supported (Product Extension Installable Supplementary Devices: No) — this is a standalone RCCB, not a modular accessory platform. The supply voltage for the test circuit is a minimum of 100 V AC. Mechanical service life is 2 000 operating cycles typical — adequate for distribution board duty where the RCCB is operated infrequently (quarterly test button press plus occasional manual isolation). Not rated for frequent switching as a load-break device.