Skip to main content
Siemens 5SU9346-1CN16 — Residual Current Breakers (RCCB/RCBO)

Siemens SENTRON 5SU9346-1CN16 RCD/MCB, 16A, 30mA, 4P

MPN5SU9346-1CN16

Siemens SENTRON 5SU9346-1CN16, RCD-operated circuit breaker (RCBO), 4-pole, 16 A rated current, 30 mA residual current, type AC, tripping characteristic C, 6 kA breaking capacity per EN 60898 and IEC 60947-2.

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

Specifications

5SU9346-1CN16 — Electrical Ratings
ParameterValue
Number of poles4
Overvoltage categoryIII
5SU9346-1CN16 — Identification
ParameterValue
Product designationRCD-operated circuit breaker
Product design / constructionInstantaneous
5SU9346-1CN16 — Mechanical
ParameterValue
Mounting positionany
Width in modular units7
Maximum75 °C
Minimum-40 °C
Width126 mm
Height90 mm
Depth77 mm
Installation depth70 mm
5SU9346-1CN16 — Environmental
ParameterValue
IP degree of protectionIP20, if the distribution board is installed, with connected conductors
5SU9346-1CN16 — Electrical
ParameterValue
Tripping Characteristic ClassC

Product details

The breaking capacity is 6 kA per both EN 60898 and IEC 60947-2, which means it can safely interrupt fault currents up to that level in a 230/400 VAC installation — sufficient for most residential and light commercial sub-distribution boards.

The 16 A rating holds at 30 °C ambient; at 40 °C it derates to 14.9 A, at 45 °C to 14.1 A, at 50 °C to 13.8 A, and at 55 °C to 13.3 A. If the panel runs warm, size the load accordingly. For circuits with variable-speed drives, LED lighting, or UPS systems, a type A or type B RCD is needed.

Occupies 7 modular width units on a DIN rail — 126 mm total width, 90 mm height, 77 mm depth. Touch protection is built in. Halogen-free and silicon-free construction, which matters for environments sensitive to corrosive off-gassing (data centers, clean rooms, food processing).

Frequently asked questions

What is the difference between this RCBO and a standard MCB?

This unit combines overcurrent protection (MCB function) and 30 mA residual current protection (RCD function) in one device, saving one module width compared to separate units. A standard MCB provides only overcurrent protection.

Will 5SU9346-1CN16 drop into a panel specified around 5SY6013-7?

No — 5SY6013-7 is a single-pole MCB with different dimensions and no residual current function. This is a 4-pole RCBO; rewiring and a larger DIN footprint are required.

MPN
5SU9346-1CN16