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Siemens 5SM3346-6KK01 — Residual Current Breakers (RCCB/RCBO)

Siemens 5SM3346-6KK01 SENTRON RCCB, 63 A, 400 V, Type A, 4-p

MPN5SM3346-6KK01

Siemens SENTRON 5SM3 series, RCCB, 4-pole, 63 A at 400 V AC, Type A, short-time delayed, 10 kA SCCR, DIN rail mount, IP20.

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

Specifications

5SM3346-6KK01 — Electrical Ratings
ParameterValue
Number of poles4
Overvoltage categoryIII
5SM3346-6KK01 — Identification
ParameterValue
Product designationRCCB
Product design / constructionShort-time delayed
5SM3346-6KK01 — Mechanical
ParameterValue
Mounting positionany
Maximum45 °C
Minimum-25 °C
Width72 mm
Height90 mm
Depth77 mm
Installation depth70 mm
5SM3346-6KK01 — Environmental
ParameterValue
IP degree of protectionIP20, if the distribution board is installed, with connected conductors

Product details

The surge current resistance is rated at 3 kA. The housing is IP20 rated once installed in a distribution board with connected conductors, and the design provides finger and back-of-hand protection against accidental contact with live parts.

Thermal derating and ambient limits

Above that, derating applies: 60.48 A at 50 °C, 57.96 A at 55 °C, 55.44 A at 60 °C, 52.92 A at 65 °C, and 50.4 A at 70 °C. The maximum permissible ambient is 75 °C, with a storage minimum of -40 °C.

Overall dimensions are 72 mm wide, 90 mm high, and 77 mm deep. It is 4 width units wide, matching standard modular enclosure spacing. Overvoltage category III, silicon-free construction. The device is short-time delayed, meaning it rides through brief surge events without nuisance tripping — useful downstream of a main RCCB or feeding equipment with capacitive inrush.

Frequently asked questions

What is the closest functional alternative to 5SM3346-6KK01?

The 5SL4363-7 is a related SENTRON series device, but it is a different design (5SL series vs 5SM3) and may have different time-delay characteristics. Verify selectivity coordination before substituting in an existing panel.

How do I get current pricing and availability for 5SM3346-6KK01?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

Will 5SM3346-6KK01 drop into a panel specified around 5SL4363-7 without rewiring?

Both are 4-pole, DIN-rail mounted RCCBs in the SENTRON family, so the physical footprint and wiring pattern are similar. However, the 5SM3 is short-time delayed while the 5SL series may not be; confirm the time-delay characteristic matches your application before swapping.

MPN
5SM3346-6KK01