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Siemens 5SM2635-0 — Residual Current Breakers (RCCB/RCBO)

Siemens 5SM2635-0 SENTRON RCD, 63A 300mA 3-Pole Type AC

MPN5SM2635-0

Siemens SENTRON RCD-unit, 5SM2635-0, 3-pole type AC, 63 A rated current, 300 mA sensitivity, Un AC 400 V.

Siemens 5SM2635-0 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SM2635-0 — Electrical Ratings
ParameterValue
Number of poles3
Overvoltage categoryIII
5SM2635-0 — Identification
ParameterValue
Product designationRCD-unit
Product design / constructioninstantaneous
5SM2635-0 — Mechanical
ParameterValue
Mounting positionany
Width in modular units3
Maximum45 °C
Minimum-5 °C
Installation depth70 mm
5SM2635-0 — Environmental
ParameterValue
IP degree of protectionIP20, if the distribution board is installed, with connected conductors

Product details

RCD-unit for 5SY miniature circuit breakers

It carries a rated fault current of 63 A with 300 mA sensitivity at 400 V AC, 50 Hz — the standard earth-leakage protection block for 3-phase sub-distribution boards in commercial and light-industrial panels.

The 300 mA threshold is a fire-protection level, not a personnel-protection level (30 mA would be required for direct shock protection). At 63 A and 400 V, this unit pairs with a 63 A 3-pole 5SY MCB to form a combined RCBO assembly in 3 modular width units (54 mm on a DIN rail). IP20 applies once the board is closed and conductors are connected.

The unit is not sealable, and the OFF-delay time is fixed (instantaneous type, not adjustable).

Frequently asked questions

What is the 5SM2635-0 used for?

It is a type AC residual current device (RCD) that bolts onto a 5SY series MCB to provide earth-leakage protection in 3-phase 400 V AC circuits, rated at 63 A with 300 mA sensitivity.

Where can I buy 5SM2635-0?

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

What is the ambient temperature range for 5SM2635-0?

Operating ambient range is -5 °C to +45 °C, with storage limits of -40 °C to +75 °C.

Does 5SM2635-0 fit in the same panel as 5SL4363-7?

Both share the same 70 mm installation depth and 3-modular-width footprint, so the RCD unit will occupy the same DIN-rail space. However, 5SM2635-0 is a bolt-on RCD for the 5SY MCB, while 5SL4363-7 is a standalone MCB — they serve different functions and are not drop-in substitutes without rewiring the circuit.

MPN
5SM2635-0