The Siemens 5SM1612-6FD is an FI-Protector Type A (PSE/SSF), a residual current device with overcurrent protection in a single 2-module (2TE) package. It's rated 25A, 2-pole, with a rated residual current (IΔn) of 0.3A at 230V, in a 55mm enclosure. At 2TE wide, this unit saves one module versus a separate MCB+RCD combination. The 0.3A sensitivity is for equipment and fire protection.
Siemens 5SM1612-6FD FI-Protector Type A, 25A 2-pole 0.3A 230
MPN5SM1612-6FD
Siemens 5SM1612-6FD, FI-Protector Type A (PSE/SSF), 55mm, 25A, 2-pole, IΔn 0.3A, 230V, 2TE.
Source DocumentedChannel stated on listing & quote
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Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026
Product details
Frequently asked questions
What does Type A mean on this FI-Protector?
Type A detects both sinusoidal AC residual currents and pulsating DC fault currents. This covers equipment with rectifiers or half-wave power supplies, which is common in modern panels with VFDs, LED drivers, and IT equipment.
MPN
5SM1612-6FD