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Siemens 5SM3647-6 — Residual Current Breakers (RCCB/RCBO)

Siemens 5SM3647-6 SENTRON RCCB, 4P, 80A, 400V, Type A, 50 Hz

MPN5SM3647-6

Siemens SENTRON 5SM3647-6, 4-pole RCCB, 80 A at 40°C, 400 V AC, Type A, 50 Hz, instantaneous, DIN rail.

$419.75Ref. price · indicative, final on quote
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

5SM3647-6 — Electrical Ratings
ParameterValue
Number of poles4
Overvoltage categoryIII
5SM3647-6 — Identification
ParameterValue
Product designationRCCB
Product design / constructionInstantaneous
5SM3647-6 — Mechanical
ParameterValue
Mounting positionany
Width72 mm
Height90 mm
Depth77 mm
Installation depth70 mm
5SM3647-6 — Environmental
ParameterValue
IP degree of protectionIP20, if the distribution board is installed, with connected conductors

Product details

The Siemens 5SM3647-6 is a 4-pole residual current circuit breaker (RCCB) from the SENTRON family, rated 80 A at 40°C and 400 V AC on a 50 Hz network. The instantaneous (short-time delayed) design means it trips without intentional delay, so it's suited for circuits where nuisance tripping from transient leakage is not expected.

Thermal derating and short-circuit coordination

For panels near heat sources or in warm environments, check the actual ambient against the 40°C baseline. The short-circuit current rating is stated as 0 kA — this RCCB is not designed to interrupt fault currents on its own; it must be paired with an upstream overcurrent protective device (MCB or fuse) that clears the fault. The permissible I²t value of 70,000 A²·s gives a coordination target for the upstream breaker. Surge current resistance is 1 kA, meaning it withstands lightning-induced or switching transients without nuisance tripping.

Frequently asked questions

Where can I buy 5SM3647-6 and how do I get a price?

The 5SM3647-6 is sourced through independent distribution channels. Submit an RFQ to receive a firm price and availability confirmation for your required quantity.

What is the closest functional alternative to 5SM3647-6?

The 5SL4363-7 is a 4-pole RCCB from the same SENTRON family, also Type A and 80 A at 400 V, but it is a different design variant (5SL series). It shares the same pole count, current rating, voltage, and fault type, so it is a functional second-source candidate. However, verify the physical footprint and terminal range before substituting in an existing panel design.

What is 5SM3647-6's listed depth?

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

What is 5SM3647-6's solid conductor range?

The terminal accepts solid conductors from 1.5 mm² to 25 mm².

Will 5SM3647-6 drop into a panel specified around 5SL4363-7 without rewiring?

Both are 4-pole RCCBs on DIN rail with 80 A rating and 400 V AC, so the electrical fit is the same. The 5SM3647-6 has a depth of 77 mm versus the 5SL4363-7's depth; if the panel has clearance for 77 mm, it will mount without rewiring. Check the terminal range — both accept 1.5–25 mm² solid/stranded — so existing conductors should fit.

What compliance documentation does Siemens provide for 5SM3647-6?

The product is designed to standards including DIN EN 61346-2 and DIN EN 81346-2 (functional designation F). It carries IP20 protection and overvoltage category III. For specific declarations (RoHS, REACH, UL, IEC), refer to the manufacturer's documentation available through the product support portal.

MPN
5SM3647-6