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Siemens 5SU1354-0KK20 — Residual Current Breakers (RCCB/RCBO)

Siemens 5SU1354-0KK20 SENTRON RCBO, 2-pole B-curve 20 A, 10

MPN5SU1354-0KK20

Siemens SENTRON 5SU1354-0KK20, RCBO, 2-pole (1P+N), B-curve, 20 A at 30 °C, 10 kA (EN 60898) / 20 kA (IEC 60947-2), Type AC residual current, halogen-free, IP20.

Siemens 5SU1354-0KK20 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

5SU1354-0KK20 — Electrical Ratings
ParameterValue
Number of poles2
Overvoltage categoryIII
5SU1354-0KK20 — Identification
ParameterValue
Product designationRCBO
Product design / constructionInstantaneous
5SU1354-0KK20 — Mechanical
ParameterValue
Mounting positionany
Width in modular units2
Maximum75 °C
Minimum-40 °C
Width36 mm
Height90 mm
Depth77 mm
Installation depth70 mm
5SU1354-0KK20 — Environmental
ParameterValue
IP degree of protectionIP20, if the distribution board is installed, with connected conductors
5SU1354-0KK20 — Electrical
ParameterValue
Tripping Characteristic ClassB
Operational current / at AC / rated value20 A

Product details

It protects a single-phase 230/240 V AC circuit at 50 Hz, with a B-curve overcurrent trip for lighting or general-purpose loads and a Type AC residual-current trip for sinusoidal AC faults. The unit is rated 20 A at 30 °C and carries a 10 kA breaking capacity per EN 60898 (20 kA per IEC 60947-2), so it handles typical domestic or light commercial fault levels without upstream coordination worries.

Fit and derating

At 36 mm wide and 77 mm deep (70 mm installation depth), this RCBO drops into a standard DIN-rail distribution board with IP20 protection once installed and conductors connected. The temperature derating is published: 20 A at 30 °C, 18.8 A at 40 °C, 16.2 A at 55 °C, down to 14.6 A at 70 °C — so if your panel runs hot, size the circuit accordingly.

Frequently asked questions

What is the breaking capacity of 5SU1354-0KK20?

10 kA per EN 60898 and 20 kA per IEC 60947-2. The higher IEC rating applies when the device is used in industrial panels; the EN rating covers domestic and commercial distribution boards.

What does Type AC residual current mean?

It detects sinusoidal AC fault currents only — not pulsed DC or smooth DC. For circuits with VFDs, UPSs, or LED drivers that generate DC components, a Type A or Type B RCBO would be required. This unit is suited for pure AC loads like lighting, heaters, and motors without solid-state drives.

Where can I buy 5SU1354-0KK20?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

MPN
5SU1354-0KK20