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Siemens 5SV3646-6KK12 — Residual Current Breakers (RCCB/RCBO)

Siemens 5SV3646-6KK12 RCCB, 4-pole Type A, 63A 300mA, SIGRES

MPN5SV3646-6KK12
Active

Siemens SENTRON 5SV3646-6KK12, 4-pole Type A RCCB, 63 A rated current, 300 mA sensitivity, 400 V AC, SIGRES variant for harsh ambient conditions.

$222.42Ref. price · indicative, final on quote
Siemens 5SV3646-6KK12 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SV3646-6KK12 — Electrical Ratings
ParameterValue
Number of poles4
Overvoltage categoryIII
5SV3646-6KK12 — Identification
ParameterValue
Product designationRCCB
Product design / constructionInstantaneous
5SV3646-6KK12 — Mechanical
ParameterValue
Mounting positionany
Width in modular units4
Maximum45 °C
Minimum-25 °C
Width72 mm
Height90 mm
Depth70 mm
Installation depth70 mm
5SV3646-6KK12 — Environmental
ParameterValue
IP degree of protectionIP20, if the distribution board is installed, with connected conductors

Product details

4-pole Type A RCCB for harsh environments

The Siemens SENTRON 5SV3646-6KK12 is a 4-pole residual current circuit breaker (RCCB) with Type A tripping characteristic, rated 63 A and 300 mA sensitivity at 400 V AC. The SIGRES designation means it is built for harsh ambient conditions — condensation, corrosive atmospheres, or high humidity — where standard RCCBs may nuisance-trip or degrade. Mounting position is unrestricted, and supply can be fed from top or bottom; for SIGRES function, feed from top even in the switched-off state.

SCCR and selectivity headroom

The 5SV3646-6KK12 carries a short-circuit current rating of 10 kA, with a rated conditional short-circuit current of 0.8 kA. The permissible series fuse can be up to 100 A, giving selectivity margin against upstream MCBs or fuses in a 400 V panel.

Frequently asked questions

What is the difference between Type A and Type AC RCCB?

Type A RCCBs detect both sinusoidal AC residual currents and pulsating DC residual currents (e.g., from rectifiers, variable-speed drives, or switched-mode power supplies). Type AC detects only sinusoidal AC. The 5SV3646-6KK12 is Type A, making it suitable for circuits with electronic loads that generate pulsating DC fault currents.

Can the 5SV3646-6KK12 be used in outdoor installations?

The IP20 rating applies only when installed in a distribution board with conductors connected. Outdoor use requires an enclosure rated for the environment — the RCCB itself is not weatherproof.

MPN
5SV3646-6KK12