The Siemens SENTRON 5SV3444-6LA is a 4-pole residual current circuit breaker (RCCB) rated 40 A at 50 Hz, with a 100 mA residual operating current and Type A sensitivity — meaning it detects sinusoidal AC and pulsating DC fault currents, common in modern electronics-heavy loads like VFDs, UPS systems, and switched-mode power supplies. It is an instantaneous (non-time-delayed) device, so it trips without intentional delay on a residual fault — suited for circuits where a short delay could cause equipment damage or where coordination with upstream time-delayed RCCBs is not required. The short-circuit current rating (SCCR) is 10 kA per IEC 61008-1 and 0.8 kA per EN 60898, meaning it safely interrupts faults up to those levels without needing an upstream fuse or breaker to limit the let-through — a key factor for panel selectivity and compliance with IEC 60364.
Siemens SENTRON 5SV3444-6LA RCCB, 40 A, 100 mA, Type A, 4-Po
MPN5SV3444-6LA
Active
Siemens SENTRON RCCB, 4-pole, 40 A, 100 mA residual, Type A, instantaneous, DIN rail, IP20.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Number of poles | 4 |
| Overvoltage category | III |
| Parameter | Value |
|---|---|
| Product designation | RCCB |
| Product design / construction | Instantaneous |
| Parameter | Value |
|---|---|
| Mounting position | any |
| Width in modular units | 4 |
| Maximum | 45 °C |
| Minimum | -25 °C |
| Width | 72 mm |
| Height | 90 mm |
| Depth | 70 mm |
| Installation depth | 70 mm |
| Parameter | Value |
|---|---|
| IP degree of protection | IP20, if the distribution board is installed, with connected conductors |
Product details
MPN
5SV3444-6LA