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Siemens 5SU9404-1KK16 — Residual Current Breakers (RCCB/RCBO)

Siemens SENTRON 5SU9404-1KK16 RCBO, 16A C-curve, 10kA

MPN5SU9404-1KK16

Siemens SENTRON 5SU9404-1KK16 RCBO, 16 A rated, C tripping characteristic, 10 kA breaking capacity per EN 60898, 1P+N, 18 mm wide.

Siemens 5SU9404-1KK16 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SU9404-1KK16 — Electrical Ratings
ParameterValue
Number of poles2
Overvoltage categoryIII
5SU9404-1KK16 — Identification
ParameterValue
Product designationRCD-operated circuit breaker
Product design / constructionInstantaneous
5SU9404-1KK16 — Mechanical
ParameterValue
Mounting positionany
Maximum75 °C
Minimum-40 °C
Width18 mm
Height125 mm
Depth77 mm
Installation depth70 mm
5SU9404-1KK16 — Environmental
ParameterValue
IP degree of protectionIP20, if the distribution board is installed, with connected conductors
5SU9404-1KK16 — Electrical
ParameterValue
Tripping Characteristic ClassC

Product details

It carries a 16 A rated current at 230/240 V AC with a C tripping characteristic and a 10 kA breaking capacity per EN 60898 and IEC 60947-2.

Derating and mounting

Rated 16 A at 30 °C ambient; derate to 15.04 A at 40 °C, 14.56 A at 45 °C, 13.92 A at 50 °C, and 12.96 A at 55 °C. Installation depth is 70 mm plus the 77 mm overall depth — check gland-plate clearance if the enclosure is shallow. Width is 18 mm (1 width unit), matching the standard modular grid; adjacent RCBOs or MCBs pack without wasted space.

Energy limiting class 3. Touch protection is provided. The product is halogen-free and silicon-free. Supply cord position can be top or bottom — no forced orientation. The design is instantaneous (no intentional time delay on the residual current element).

Frequently asked questions

What is the breaking capacity of the 5SU9404-1KK16?

10 kA per both EN 60898 and IEC 60947-2 at 230/240 V AC. This covers most residential and light commercial distribution boards where the prospective short-circuit current is under that threshold.

Will 5SU9404-1KK16 drop into a panel specified around 5SL6120-7?

Both are 18 mm wide 1P+N RCBOs from the SENTRON family, so the mechanical footprint is identical. The 5SU9404-1KK16 is a 16 A C-curve unit; the 5SL6120-7 is a different rating. Check the load current and tripping curve before swapping — the DIN-rail clip and busbar pitch match.

Where can I buy the 5SU9404-1KK16?

This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment.

What is the depth of the 5SU9404-1KK16?

77 mm overall depth, with a 70 mm installation depth into the distribution board. Verify enclosure depth if using a shallow backbox.

MPN
5SU9404-1KK16