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Siemens 5SV4312-0KL — Residual Current Breakers (RCCB/RCBO)

Siemens SENTRON 5SV4312-0KL RCCB, 2-pole, 25 A, 30 mA, 10 kA

MPN5SV4312-0KL
Active

Siemens SENTRON RCCB, 2-pole, 25 A, 30 mA, instantaneous AC type, 10 kA, 230 V AC, 50 Hz, DIN rail, IP20.

$25.40Ref. price · indicative, final on quote
Siemens 5SV4312-0KL datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SV4312-0KL — Electrical Ratings
ParameterValue
Number of poles2
Overvoltage categoryIII
5SV4312-0KL — Identification
ParameterValue
Product designationRCCB
Product design / constructionInstantaneous
5SV4312-0KL — Mechanical
ParameterValue
Mounting positionany
Width in modular units2
Maximum45 °C
Minimum-25 °C
Width36 mm
Height90 mm
Depth70 mm
Installation depth70 mm
5SV4312-0KL — Environmental
ParameterValue
IP degree of protectionIP20, if the distribution board is installed, with connected conductors

Product details

Depth is 70 mm; account for that when sizing the enclosure depth — especially if busbars or wiring ducts run behind the row.

Ratings that matter in the nacelle

Up-tower, temperature derating is the spec that bites you if you ignore it. At 65 °C it still holds 23.3 A, and at 70 °C it derates to 17.6 A. The I²t rating of 58 000 A²·s and a let-through current of 5 200 A define the energy the RCCB passes during a fault. For selectivity coordination with an upstream MCB, those numbers tell you whether the RCCB clears before the main breaker sees the full fault energy — critical in a turbine tower where a nuisance trip at the main breaker drops the whole converter, not just the branch circuit.

Supply voltage for the test circuit is 195 V minimum, so the test button works reliably even on a weak grid. Overvoltage category III means it's rated for fixed-installation distribution boards, not just downstream socket circuits. Silicon-free construction matters for automotive or paint-line applications where silicone outgassing causes adhesion failures.

Frequently asked questions

Where can I buy the 5SV4312-0KL and get a price?

We source and quote the 5SV4312-0KL to order against an RFQ. Availability and current pricing are confirmed at quote time through our independent distribution network — submit an RFQ for a firm price and lead time.

What is the closest functional second-source to the 5SV4312-0KL?

The 5SL6550-7BB is a Siemens SENTRON RCCB with similar ratings — 2-pole, 25 A, 30 mA — but it is a different variant. Verify the neutral position (N left vs N right), terminal pitch, and any busbar compatibility before substituting. The 5SV4312-0KL is an instantaneous AC type; confirm the 5SL6550-7BB matches that characteristic if timing coordination matters.

Will the 5SV4312-0KL drop into a panel specified around the 5SL6550-7BB?

Both are 2-module-width (36 mm) DIN-rail RCCBs from the SENTRON family, so the mechanical footprint is the same. The critical check is the neutral position — the 5SV4312-0KL has N left, while the 5SL6550-7BB may differ. If your busbar or pre-wired jumper expects neutral on the right, you will need to re-terminate or swap the busbar segment.

What compliance documentation does Siemens provide for the 5SV4312-0KL?

The RCCB is designed to IEC 61008-1 (the standard for residual current devices without integral overcurrent protection). It carries a rated conditional short-circuit current of 0.5 kA per IEC 61008-1. For RoHS, REACH, and UL documentation, request the manufacturer's declaration of conformity — these are typically available through the Siemens Industry Online Support portal.

MPN
5SV4312-0KL