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Siemens 5SM3642-6 — Residual Current Breakers (RCCB/RCBO)

Siemens 5SM3642-6 SENTRON RCCB, 25 A, 400 V, Type A, 4-Pole

MPN5SM3642-6

Siemens SENTRON 5SM3642-6, 4-pole RCCB, Type A, instantaneous, 25 A at 40 °C, 400 V AC, 10 kA SCCR, DIN rail mount.

$97.98Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

5SM3642-6 — Electrical Ratings
ParameterValue
Number of poles4
Overvoltage categoryIII
5SM3642-6 — Identification
ParameterValue
Product designationRCCB
Product design / constructionInstantaneous
5SM3642-6 — Mechanical
ParameterValue
Mounting positionany
Maximum45 °C
Minimum-25 °C
Width72 mm
Height90 mm
Depth77 mm
Installation depth70 mm
5SM3642-6 — Environmental
ParameterValue
IP degree of protectionIP20, if the distribution board is installed, with connected conductors

Product details

The instantaneous design (no intentional delay) makes it suitable for direct protection of final circuits where nuisance tripping from transient surges is not a concern.

Snaps onto a DIN rail (REG) and occupies 4 width units at 72 mm wide.

Rated 25 A at both 40 °C and 45 °C ambient. Derating begins above 45 °C: 24 A at 50 °C, 23 A at 55 °C, 22 A at 60 °C, 21 A at 65 °C, and 20 A at 70 °C. The silicon-free construction matters for applications where silicone outgassing can contaminate contacts or optical surfaces.

Frequently asked questions

How do I get current pricing and availability for 5SM3642-6?

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

What is 5SM3642-6's listed depth?

The depth is 77 mm, with an installation depth of 70 mm.

What is 5SM3642-6's listed width?

The width is 72 mm, occupying 4 width units on a DIN rail.

Will 5SM3642-6 drop into a panel specified around 5SY4304-7CV without rewiring?

Both are 4-pole DIN-rail RCCBs, but the 5SY4304-7CV is a different series with potentially different dimensions and terminal layout. Verify the physical fit and wiring diagram against your panel before substitution.

MPN
5SM3642-6