Skip to main content
Log in
Siemens 5SU1356-6KK25 — Residual Current Breakers (RCCB/RCBO)

Siemens 5SU1356-6KK25 SENTRON RCBO, 25 A, B Curve, 6 kA

MPN5SU1356-6KK25
Active

Siemens SENTRON 5SU1356-6KK25 RCBO, 1P+N, 25 A rated at 30 °C, B tripping characteristic, 6 kA breaking capacity per EN 60898, 15 kA per IEC 60947-2, 2 MW units, IP20.

$41.91 – $65.33Ref. price · indicative, final on quote
Siemens 5SU1356-6KK25 datasheet (PDF)
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

5SU1356-6KK25 — Electrical Ratings
ParameterValue
Number of poles2
Overvoltage categoryIII
5SU1356-6KK25 — Identification
ParameterValue
Product designationRCBO
Product design / constructionInstantaneous
5SU1356-6KK25 — Mechanical
ParameterValue
Mounting positionany
Width in modular units2
Maximum75 °C
Minimum-40 °C
Width36 mm
Height90 mm
Depth77 mm
Installation depth70 mm
5SU1356-6KK25 — Environmental
ParameterValue
IP degree of protectionIP20, if the distribution board is installed, with connected conductors
5SU1356-6KK25 — Electrical
ParameterValue
Tripping Characteristic ClassB

Product details

The Siemens 5SU1356-6KK25 is a SENTRON RCBO (residual current operated circuit breaker with integral overcurrent protection) in a 1P+N configuration — one protected pole plus a switched neutral. Rated 25 A at 30 °C with a B tripping characteristic, it trips instantaneously between 3 and 5 times rated current (75–125 A), which makes it the right choice for residential or light commercial final circuits where inrush is low — lighting, socket outlets, small appliances. Temperature derating is built in: at 40 °C it carries 23.5 A, at 50 °C it's 21.75 A, and at 70 °C it's 18.25 A. The 2 MW unit width (36 mm) per DIN 43880 means it occupies two standard 18 mm slots on the rail; at 77 mm depth plus 70 mm installation depth, it clears most domestic and light-industrial enclosures without a deep-can modification.

Supply can land top or bottom — no orientation restriction, which simplifies wiring in tight enclosures. IP20 with connected conductors (the distribution board must be installed for the protection to be effective).

Frequently asked questions

Where can I buy 5SU1356-6KK25 and how do I get a price?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for your required quantity.

When sourcing 5SU1356-6KK25, what's the closest functional second-source — 5SL6220-7?

The 5SL6220-7 is a Siemens SENTRON MCB (no residual current protection), while the 5SU1356-6KK25 is an RCBO with integral RCD. They share the same 2 MW DIN footprint and B-curve characteristic, but the 5SL6220-7 does not provide earth-leakage protection. If your circuit requires combined overcurrent and residual current protection, the 5SU1356-6KK25 is the correct part; a panel wired for an MCB alone would need additional RCD hardware or a different device.

What is 5SU1356-6KK25's listed depth (77 mm) on this component line?

Depth is 77 mm, with an installation depth of 70 mm. That clears most standard shallow enclosures, but verify internal clearance if your can depth is under 80 mm.

Will 5SU1356-6KK25 drop into a panel that was specified around 5SL6220-7 without rewiring?

Mechanically yes — both are 2 MW units (36 mm wide) on the same DIN rail footprint, and both accept top or bottom supply. Electrically, the 5SU1356-6KK25 adds a residual current sensing circuit that the 5SL6220-7 lacks, so you must have a neutral conductor connected and the load neutral must pass through the device. If the existing circuit was wired as a single-pole MCB with no neutral through the device, rewiring is required.

What compliance documentation does this brand provide for 5SU1356-6KK25 (RoHS, REACH, UL, IEC)?

The part is rated per EN 60898 (6 kA) and IEC 60947-2 (15 kA), carries overvoltage category III and pollution degree 2, and is halogen-free and silicon-free. Siemens standard declarations of conformity and material compliance (RoHS/REACH) are available on request through the supply channel.

MPN
5SU1356-6KK25