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Siemens 5SU1346-6FP06 — Residual Current Breakers (RCCB/RCBO)

Siemens 5SU1346-6FP06 SENTRON RCBO, B-Curve 6A 4P 6kA 400V

MPN5SU1346-6FP06
Active

Siemens SENTRON RCBO, 4-pole, B-curve, 6A rated at 30°C, 6kA breaking capacity per EN 60898, 400V 50Hz, instantaneous design, 4 MW units, IP20 installed.

Siemens 5SU1346-6FP06 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SU1346-6FP06 — Electrical Ratings
ParameterValue
Number of poles4
Overvoltage categoryIII
5SU1346-6FP06 — Identification
ParameterValue
Product designationRCBO
Product design / constructionInstantaneous
5SU1346-6FP06 — Mechanical
ParameterValue
Mounting positionany
Width in modular units4
Maximum70 °C
Minimum-40 °C
Width72 mm
Height85 mm
Depth72 mm
Installation depth70 mm
5SU1346-6FP06 — Environmental
ParameterValue
IP degree of protectionIP20, if the distribution board is installed, with connected conductors
5SU1346-6FP06 — Electrical
ParameterValue
Tripping Characteristic ClassB

Product details

RCBO for 400V 50Hz distribution boards

It carries a B-curve tripping characteristic and is rated 6 A at 30 °C ambient, with a 6 kA breaking capacity according to EN 60898 and IEC 60947-2. The instantaneous design means no intentional delay on short-circuit — it clears fast, which matters for cable protection and selectivity coordination downstream. The 4-pole design protects all three phases plus neutral with a single device, saving DIN rail space compared to separate MCB + RCCB combinations.

The 6 A rating is only valid at 30 °C. The datasheet provides a full derating curve: 5.7 A at 40 °C, 5.5 A at 45 °C, 5.3 A at 50 °C, 5.1 A at 55 °C, 5.0 A at 60 °C, and 4.7 A at 70 °C. If your panel runs warm — say 50 °C inside the enclosure — you effectively have a 5.3 A device. The maximum ambient is 70 °C; the minimum is -40 °C. Mounting position is any, which helps in tight enclosures.

Frequently asked questions

What is the breaking capacity of 5SU1346-6FP06?

6 kA rated breaking capacity according to both EN 60898 and IEC 60947-2, at 400 V AC, 50 Hz.

What does the B-curve mean on this RCBO?

B-curve means the magnetic trip operates at 3 to 5 times rated current (18–30 A for the 6 A version), providing fast short-circuit protection for resistive and general-purpose loads without high inrush.

Will 5SU1346-6FP06 drop into a panel specified around 5SU9354-7KK16 without rewiring?

The 5SU1346-6FP06 is a 4-pole RCBO with 72 mm width (4 MW units), while the 5SU9354-7KK16 is a different variant — check the specific pole count and width of your existing panel's cutout. Both are SENTRON DIN-rail devices, but the functional difference (B-curve vs other characteristic, rated current, and residual current rating) means you must verify the circuit requirements before swapping.

Where can I buy 5SU1346-6FP06 and how is it quoted?

Sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for your volume and delivery needs.

MPN
5SU1346-6FP06