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Siemens 5SM3347-6KL — Residual Current Breakers (RCCB/RCBO)

Siemens 5SM3347-6KL SENTRON RCCB, 80 A, 30 mA, 4-pole, Type

MPN5SM3347-6KL

Siemens SENTRON 5SM3 series, RCCB, 4-pole, Type A, In: 80 A, 30 mA, Un AC: 400 V, N left, DIN rail mount.

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

Specifications

5SM3347-6KL — Electrical Ratings
ParameterValue
Number of poles4
Overvoltage categoryIII
5SM3347-6KL — Identification
ParameterValue
Product designationRCCB
Product design / constructionInstantaneous
5SM3347-6KL — Mechanical
ParameterValue
Mounting positionany
Maximum25 mm²
Minimum1.5 mm²
Width72 mm
Height90 mm
Depth77 mm
Installation depth70 mm
5SM3347-6KL — Environmental
ParameterValue
IP degree of protectionIP20, if the distribution board is installed, with connected conductors

Product details

The Siemens 5SM3347-6KL is a SENTRON residual current operated circuit breaker (RCCB), 4-pole, Type A, rated 80 A at 400 V AC with a 30 mA trip sensitivity. It's an instantaneous design — no intentional delay — so it clears ground faults as fast as the waveform allows, which is what you want for personnel protection on a 50 Hz supply.

Panel integration

Snaps onto DIN rail (REG profile) in any mounting position. Depth is 77 mm, height 90 mm, width 72 mm (4 width units). Terminal capacity accepts 1.5 mm² minimum to 25 mm² maximum — solid or stranded. Supply can land top or bottom. The test button requires at least 100 V to operate, so you can functionally test it at line voltage.

Frequently asked questions

Where can I buy the 5SM3347-6KL and get a price?

This part is sourced to order against an RFQ through independent distribution. Submit a request for quote; availability and current pricing are confirmed at quote time.

What is the difference between the 5SM3347-6KL and the 5SU9354-8KK63?

The 5SU9354-8KK63 is a 2-pole RCBO (RCD + MCB in one unit) rated 63 A with a D-curve overcurrent trip, while the 5SM3347-6KL is a 4-pole RCCB rated 80 A with no overcurrent protection. They are not drop-in replacements: the 5SU9 combines ground-fault and short-circuit/overload protection in a 36 mm wide package; the 5SM3 is a pure residual current device that requires a separate MCB or fuse upstream for overcurrent protection.

What compliance documentation is available for the 5SM3347-6KL?

The product carries the SENTRON brand and is designed to IEC/EN 61008 standards for RCCBs. Overvoltage category III, pollution degree 2 typical for distribution boards. Specific certificates (CE, UKCA, EAC) are standard for this series; request the declaration of conformity with your RFQ.

MPN
5SM3347-6KL