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Siemens 5SM2832-8 — Residual Current Breakers (RCCB/RCBO)

Siemens 5SM2832-8 SENTRON RC Unit, 40 A, 1000 mA, Type A Sel

MPN5SM2832-8
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Siemens SENTRON 5SM2832-8 RC unit, 3-pole, type A, selective, In: 40 A, 1000 mA, Un AC: 400 V, DIN rail mount.

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

Specifications

5SM2832-8 — Electrical Ratings
ParameterValue
Number of poles3
Overvoltage categoryIII
5SM2832-8 — Identification
ParameterValue
Product designationRC unit
Product design / constructionSelective
5SM2832-8 — Mechanical
ParameterValue
Mounting positionany
Width in modular units3
Maximum45 °C
Minimum-25 °C
Width107 mm
Depth70 mm
Installation depth70 mm
5SM2832-8 — Environmental
ParameterValue
IP degree of protectionIP20, if the distribution board is installed, with connected conductors

Product details

The 3-pole unit snaps onto DIN rail (REG) and occupies 3 modular width units, with a 70 mm depth.

Selectivity and Coordination

The selective design (no short-term delayed switching) means this RC unit is intended as the upstream device in a graded RCD installation — it withstands transient earth faults and inrush without nuisance tripping, so only the downstream RCD clears a persistent fault.

Mounts in any position on DIN rail — no orientation restrictions. Silicon-free construction is a plus for automotive or electronics manufacturing lines where silicone outgassing can contaminate sensitive contacts or coatings.

Frequently asked questions

What is the 5SM2832-8 used for?

It is a residual current unit (RC unit) for the SENTRON 5SY series, providing type A selective earth-fault protection at 40 A and 1000 mA in 400 V AC, 50 Hz distribution boards.

Will the 5SM2832-8 fit in a panel designed for a 5SL4363-7?

No — the 5SM2832-8 is a 3-pole RC unit (107 mm wide, 3 MW), while the 5SL4363-7 is a 3-pole MCB (54 mm wide, 3 MW). The RC unit is wider and serves a different function (residual current detection vs. overcurrent protection), so it does not drop in as a direct mechanical or functional replacement.

MPN
5SM2832-8