Skip to main content
Log in
Siemens 5SM3346-0 — Residual Current Breakers (RCCB/RCBO)

Siemens SENTRON 5SM3346-0 RCCB, 4P, 63A, 30mA, 400V AC

MPN5SM3346-0

Siemens SENTRON RCCB, 4-pole, type AC, In: 63 A, 30 mA, Un AC: 400 V, instantaneous, 10 kA SCCR, DIN rail mount, IP20.

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

Specifications

5SM3346-0 — Electrical Ratings
ParameterValue
Number of poles4
Overvoltage categoryIII
5SM3346-0 — Identification
ParameterValue
Product designationRCCB
Product design / constructionInstantaneous
5SM3346-0 — Mechanical
ParameterValue
Mounting positionany
Width in modular units4
Maximum45 °C
Minimum-5 °C
Width72 mm
Height90 mm
Depth77 mm
Installation depth70 mm
5SM3346-0 — Environmental
ParameterValue
IP degree of protectionIP20, if the distribution board is installed, with connected conductors
5SM3346-0 — Electrical
ParameterValue
Operational current / at AC / rated value63 A

Product details

The Siemens SENTRON 5SM3346-0 is a 4-pole residual current operated circuit breaker (RCCB), type AC, rated at 63 A with a 30 mA trip sensitivity on a 400 V AC supply.

Breaking capacity and standards compliance

The conditional short-circuit current rating (Icn) is 10 kA per EN 60898, and the rated conditional short-circuit current per IEC 61008-1 is 0.8 kA. The 0.8 kA value under IEC 61008-1 is the lower test current for the RCCB's own withstand — both are standard for this class of device.

Snaps onto DIN rail (REG profile), 4 modular width units wide (72 mm), 77 mm deep, 90 mm tall.

The 10 000 mechanical switching cycles typical service life is standard for a panel-mounted RCCB — enough for years of normal use, but not a high-cycling application like a motor starter.

Frequently asked questions

What is the 5SM3346-0 used for?

It's a 4-pole residual current circuit breaker (RCCB) type AC, rated 63 A / 30 mA / 400 V AC, used for earth-leakage protection in final circuits — typically in residential, commercial, or light industrial distribution boards.

What are the key ratings of the 5SM3346-0?

Rated operational current 63 A AC, rated residual current 30 mA, rated voltage 400 V AC, conditional short-circuit current 10 kA per EN 60898, 4 poles, instantaneous tripping, type AC (sensitive to sinusoidal AC residual currents).

Where can I buy the 5SM3346-0?

We source and quote the 5SM3346-0 to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

Will the 5SM3346-0 fit in a panel designed for the 5SJ6325-7RC?

Not without rewiring. The 5SM3346-0 is a 4-pole RCCB (72 mm wide, 4 MW), while the 5SJ6325-7RC is a 3-pole MCB (54 mm wide, 3 MW). The depth (77 mm vs 76 mm) and height (90 mm both) are nearly identical, but the width difference means it won't drop into the same DIN-rail slot without a different busbar or wiring arrangement.

MPN
5SM3346-0