RCCB for 400 V AC distribution boards
The Siemens 5SV4348-0 is a 4-pole residual current circuit breaker (RCCB) rated for 100 A continuous current with a 30 mA trip sensitivity on 400 V AC systems. Type AC detection means it responds to sinusoidal AC fault currents — the standard choice for general-purpose circuits without non-sinusoidal or pulsating DC fault profiles. The 30 mA threshold provides personal protection against direct-contact faults in final subcircuits, per IEC 60364 requirements for socket-outlet and lighting circuits.
Panel integration and mounting
Packaged as a single unit (78 x 97 x 85 mm), the 5SV4348-0 snaps onto standard 35 mm DIN rail per EN 60715. The 4-pole width occupies four modular spaces (4 x 18 mm) in a distribution board. Spring-cage or screw terminals accept 1.5–35 mm² conductors depending on the terminal design — verify the specific terminal marking on the device before terminating.
Sourcing and availability
This RCCB is sourced through the authorized Siemens channel. For volume requirements or BOM-line commitments, submit an RFQ — availability and current pricing are confirmed at quote time. The product class B designation (return restricted) means the device is not stocked for over-the-counter returns; coordinate with your Siemens partner for any return authorizations.