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Siemens 5SU1654-6KK20 — Residual Current Breakers (RCCB/RCBO)

Siemens SENTRON 5SU1654-6KK20 RCBO, 20 A, B Curve, 10 kA

MPN5SU1654-6KK20
Active

Siemens SENTRON RCBO, 2-pole 1P+N, 20 A, B characteristic, Type A residual current, 10 kA (EN 60898) / 20 kA (IEC 60947-2), 2 MW, IP20.

Siemens 5SU1654-6KK20 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

5SU1654-6KK20 — Electrical Ratings
ParameterValue
Number of poles2
Overvoltage categoryIII
5SU1654-6KK20 — Identification
ParameterValue
Product designationRCBO
Product design / constructionInstantaneous
5SU1654-6KK20 — Mechanical
ParameterValue
Mounting positionany
Width in modular units2
Maximum75 °C
Minimum-40 °C
Width36 mm
Height90 mm
Depth77 mm
Installation depth70 mm
5SU1654-6KK20 — Environmental
ParameterValue
IP degree of protectionIP20, if the distribution board is installed, with connected conductors
5SU1654-6KK20 — Electrical
ParameterValue
Tripping Characteristic ClassB

Product details

The Siemens SENTRON 5SU1654-6KK20 is a 2-pole (1P+N) residual current circuit breaker with overcurrent protection — an RCBO that combines a B-curve MCB and a Type A RCD in one 36 mm-wide, 2-module-width housing.

Energy limitation class 3 (cites:) means it limits let-through energy enough to protect downstream wiring and loads during a fault.

Temperature derating — the real-world current

At 40 °C the continuous current drops to 18.8 A (cites:), at 50 °C to 17.4 A (cites:), and at 70 °C to 14.6 A (cites:). If the RCBO is installed in a crowded enclosure or near heat-generating devices, the effective ampacity is lower than the nameplate. The mounting position is unrestricted (cites:), so derating is driven by ambient temperature alone, not orientation.

Panel fit and installation

Width is 36 mm, which is 2 modular width units (cites:,) — it occupies two standard 18 mm DIN-rail slots. Depth is 77 mm (cites:), installation depth 70 mm (cites:). The supply cord can enter from either top or bottom (cites:), which simplifies busbar routing in a distribution board.

Frequently asked questions

Where can I buy 5SU1654-6KK20 and how do I get a price?

The 5SU1654-6KK20 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What is the breaking capacity of 5SU1654-6KK20?

Rated breaking capacity is 10 kA per EN 60898 (cites:) and 20 kA per IEC 60947-2 (cites:). The higher figure applies when the RCBO is used in industrial switchgear per IEC 60947-2.

What does the B curve and Type A residual current mean on this RCBO?

The B tripping characteristic (cites:) means the magnetic trip operates at 3 to 5 times rated current, suited for resistive and light inductive loads. Type A residual current detection (cites:) covers sinusoidal AC and pulsating DC fault currents, required for circuits with electronic loads like switched-mode power supplies or VFDs.

What is the temperature derating for 5SU1654-6KK20?

At 30 °C the rating is 20 A (cites:). It derates to 18.8 A at 40 °C (cites:), 17.4 A at 50 °C (cites:), and 14.6 A at 70 °C (cites:). Mounting position is unrestricted (cites:).

MPN
5SU1654-6KK20