Skip to main content
Siemens 5SU1346-7FP32 — Residual Current Breakers (RCCB/RCBO)

Siemens 5SU1346-7FP32 SENTRON RCBO, 4P, 32A C-curve, 6kA

MPN5SU1346-7FP32
Active

Siemens SENTRON 5SU1346-7FP32 RCBO, 4-pole, 32 A rated at 30 °C, C tripping characteristic, 6 kA breaking capacity per EN 60898 and IEC 60947-2, IP20, 4 MW wide.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SU1346-7FP32 — Electrical Ratings
ParameterValue
Number of poles4
Overvoltage categoryIII
5SU1346-7FP32 — Identification
ParameterValue
Product designationRCBO
Product design / constructionInstantaneous
5SU1346-7FP32 — Mechanical
ParameterValue
Mounting positionany
Width in modular units4
Maximum70 °C
Minimum-40 °C
Width72 mm
Height85 mm
Depth72 mm
Installation depth70 mm
5SU1346-7FP32 — Environmental
ParameterValue
IP degree of protectionIP20, if the distribution board is installed, with connected conductors
5SU1346-7FP32 — Electrical
ParameterValue
Tripping Characteristic ClassC

Product details

Siemens SENTRON 5SU1346-7FP32 — RCBO for final-distribution protection

It combines a 32 A thermal-magnetic overcurrent trip (C-curve) with residual-current detection in one unit, saving a DIN-rail slot compared to separate MCB+RCCB pairs. Rated 32 A at 30 °C ambient, it derates to 26.9 A at 70 °C — a thermal curve worth checking if the RCBO sits in a crowded, warm enclosure. The C-curve characteristic (5–10× In magnetic trip) suits mixed resistive and moderate motor-starting loads common in commercial and light-industrial final circuits.

Depth is 72 mm, height 85 mm — fits standard distribution boards with 70 mm installation depth allowance. Surge current withstand is 0.25 kA.

Frequently asked questions

Does 5SU1346-7FP32 replace 5SY4304-7CV in an existing panel?

The 5SU1346-7FP32 is a combined RCBO (overcurrent + residual current), while the 5SY4304-7CV is a plain MCB without residual-current protection. They are not direct drop-in substitutes — the RCBO adds a residual-current module and occupies a different wiring scheme. Check the existing circuit's need for RCD protection before substituting.

MPN
5SU1346-7FP32