The Siemens SENTRON 5SM3648-6 is a 4-pole Type A instantaneous residual current circuit breaker (RCCB) rated at 100 A with 300 mA sensitivity, designed for 400 V AC, 50 Hz systems. It carries a 10 kA short-circuit current rating (SCCR) per IEC 61008-1 and EN 60898, meaning it can safely interrupt fault currents up to 10 kA without upstream damage — a critical spec for coordination in distribution boards where fault levels are known. The Type A detection covers sinusoidal AC and pulsating DC residual currents, which is the standard requirement for most commercial and industrial final circuits with electronic loads.
Panel Integration and Mounting
Snap-on DIN rail (REG) mounting, any position. Occupies 4 modular width units (72 mm wide) on the DIN rail. The 77 mm depth fits standard distribution boards with 70 mm installation depth. Spring-cage terminals accept top or bottom feed — no polarity concern on the line/load side for an RCCB. The IP20 rating applies only with connected conductors and the distribution board installed; treat it as a panel-internal device, not for exposed mounting.
Lifecycle and Sourcing
Lifecycle stage is current. The part is sourced to order through independent distribution channels; availability and pricing confirmed at quote time.