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Siemens 5SU9104-1KK32 — Residual Current Breakers (RCCB/RCBO)

Siemens SENTRON 5SU9104-1KK32 RCBO, 32A, 10mA, Type AC, C-cu

MPN5SU9104-1KK32

Siemens SENTRON RCBO, 1P+N, 32 A, 10 mA residual, Type AC, C-curve, 10 kA, 1 MW, IP20.

Siemens 5SU9104-1KK32 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SU9104-1KK32 — Electrical Ratings
ParameterValue
Number of poles2
Overvoltage categoryIII
5SU9104-1KK32 — Identification
ParameterValue
Product designationRCD-operated circuit breaker
Product design / constructionInstantaneous
5SU9104-1KK32 — Mechanical
ParameterValue
Mounting positionany
Width in modular units1
Maximum75 °C
Minimum-40 °C
Width18 mm
Height125 mm
Depth77 mm
Installation depth70 mm
5SU9104-1KK32 — Environmental
ParameterValue
IP degree of protectionIP20, if the distribution board is installed, with connected conductors
5SU9104-1KK32 — Electrical
ParameterValue
Tripping Characteristic ClassC

Product details

The Siemens SENTRON 5SU9104-1KK32 is a combined residual-current-operated circuit breaker (RCBO) — one modular-width unit (18 mm) that integrates overcurrent protection and 10 mA earth-leakage detection in a single DIN-rail device. The C-curve (tripping characteristic C) means magnetic release between 5× and 10× In, so it's a fit for mixed resistive-inductive loads like small motor circuits, lighting banks, or control transformers where inrush won't nuisance-trip a B-curve but you still want fast fault clearing.

Ratings and thermal derating

Rated 32 A at 30 °C ambient, but the thermal derating curve is published per the datasheet: 30.08 A at 40 °C, 29.12 A at 45 °C, 27.84 A at 50 °C, and 25.92 A at 55 °C. Insulation voltage (Ui) is 264 V, surge voltage resistance rated at 4 kV, overvoltage category III, pollution degree 2 — standard for fixed-installation distribution boards.

Frequently asked questions

Where can I buy 5SU9104-1KK32 and how do I get a price?

This part is sourced and quoted to order against an RFQ through independent distribution. Submit a request for quote (RFQ) to confirm current availability and pricing — no stock count or price figure is published here.

What is the residual current rating and type on this RCBO?

The residual current rating is 10 mA, Type AC (sensitive to sinusoidal AC earth-leakage currents only). That 10 mA threshold is the personal-protection level per IEC 60364 — not the 30 mA equipment-protection level common on general-purpose RCDs.

What compliance documentation does this brand provide for 5SU9104-1KK32?

The brand provides standard declarations including RoHS and REACH compliance, CE marking, and the part is listed under EN 61346-2 / IEC 81346-2 function designation F. Breaking capacity is certified per EN 60898 at 10 kA.

What are the physical dimensions — width, depth, height?

Width is 18 mm (1 modular unit), depth is 77 mm, height is 125 mm, installation depth is 70 mm. It occupies a single DIN-rail module.

MPN
5SU9104-1KK32