The Siemens 5SU1156-6KV16 is a combined residual-current device and miniature circuit breaker (RCBO) — an FI/LS protector in Siemens' own designation. It packs Type A earth-leakage detection (10 mA sensitivity) with a B-curve 16 A overcurrent trip into a single 1+N-pole module, rated for 6 kA breaking capacity. The 70 mm depth matches standard Siemens distribution-board cutouts; the Type A classification means it catches pulsating DC fault currents from rectified loads — think LED drivers, switched-mode supplies, or single-phase VFDs on the same final circuit.
Siemens 5SU1156-6KV16 FI/LS Protector Type A, 10mA, 6kA, B16
MPN5SU1156-6KV16
Siemens 5SU1156-6KV16, FI/LS-PROTECTOR TYPE A (PSE/SSF), D=70MM IFN 10MA, 6KA, 1+N-POLE B 16A.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Product details
Frequently asked questions
What is 5SU1156-6KV16's rated sensitivity and breaking capacity?
Rated residual operating current (IΔn) is 10 mA, Type A. Short-circuit breaking capacity is 6 kA. Overcurrent characteristic is B-curve at 16 A, 1+N-pole.
Where can I buy 5SU1156-6KV16?
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
MPN
5SU1156-6KV16