Siemens SENTRON RCBO & RCCB

Residual current devices protect people against earth leakage, and they are increasingly specified on new installations as standard. We supply the SENTRON 5SU RCBO range, which combines overcurrent and residual current protection in one module, and the 5SV and 5SM RCCB ranges for whole-circuit earth-leakage protection, in 30 mA personal-protection and 300 mA fire-protection sensitivities.

SENTRON RCBO & RCCB Residual Current Protection we supply

• RCBO 5SU1354-6KK25
• Residual Current Circuit Breaker (RCCB) 5SV4414-0KL
• Siemens 5SM3315-6KK — Residual current operated circuit breaker
• Siemens 5SM3318-6KK — Residual Current Circuit Breaker (RCCB) Type A
• Siemens 5SM3415-6KK — Residual Current Operated Circuit Breaker (RCCB/RCD)
• Siemens 5SM3418-6KK — Residual Current Circuit Breaker
• Siemens 5SM3615-6KK — Residual Current Circuit Breaker
• Siemens 5SM3618-6KK — Residual Current Circuit Breaker (RCCB)
• Siemens 5SU1154-6KK06 — SENTRON RCBO
• Siemens 5SU1154-6KK10 — RCBO
• Siemens 5SU1154-6KK13 — RCBO
• Siemens 5SU1154-6KK16 — RCBO
• Siemens 5SU1154-7KK06 — RCBO
• Siemens 5SU1154-7KK10 — RCBO
• Siemens 5SU1154-7KK13 — RCBO
• Siemens 5SU1154-7KK16 — SENTRON RCBO
• Siemens 5SU1324-6FA06 — RCBO 2P 6A B-characteristic 30mA Type A
• Siemens 5SU1324-6FA10 — RCBO
• Siemens 5SU1324-6FA13 — RCBO 2P 13A B-Characteristic 30mA Type A 10kA
• Siemens 5SU1324-6FA16 — SENTRON RCBO 2P 16A B-characteristic Type A
• Siemens 5SU1324-6FA20 — RCBO 2P 20A B Type A 30mA
• Siemens 5SU1324-6FA25 — RCBO 2P 25A 30mA Type A B-char
• Siemens 5SU1324-6FA32 — RCBO Type A 2P 32A 30mA B-char
• Siemens 5SU1324-6FA40 — RCBO 2P 40A B-Char 30mA Type A
• Siemens 5SU1324-6FP06 — RCBO
• Siemens 5SU1324-6FP10 — RCBO
• Siemens 5SU1324-6FP13 — RCBO
• Siemens 5SU1324-6FP16 — RCBO
• Siemens 5SU1324-6FP20 — RCBO
• Siemens 5SU1324-6FP25 — RCBO
• Siemens 5SU1324-6FP32 — Residual Current Circuit Breaker with Overcurrent Protection
• Siemens 5SU1324-6FR16 — RCBO Type A 30mA B 16A
• Siemens 5SU1324-6FR20 — RCBO, 10 kA, 2-pole type A, 30 mA, B char, In: 20 A Un: 230 V super-resistant
• Siemens 5SU1324-6FR25 — RCBO 2P 25A B 30mA Type A
• Siemens 5SU1324-6KK82 — RCBO Type A 2P 125A B
• Siemens 5SU1324-6KX06 — RCBO
• Siemens 5SU1324-6KX10 — RCBO SENTRON
• Siemens 5SU1324-6KX13 — RCBO
• Siemens 5SU1324-6KX16 — SENTRON 5SU RCBO
• Siemens 5SU1324-6KX20 — RCBO 5SU1
• Siemens 5SU1324-6KX25 — RCBO (Residual Current Circuit Breaker with Overcurrent Protection)
• Siemens 5SU1324-6KX32 — RCBO 2P 32A B-Type 30mA A-Type 110V AC
• Siemens 5SU1324-6KX40 — RCBO
• Siemens 5SU1324-7FA06 — RCBO 2P 6A Type A 30mA C-Char
• Siemens 5SU1324-7FA10 — RCBO
• Siemens 5SU1324-7FA13 — RCBO 5SU13 2P 13A C
• Siemens 5SU1324-7FA16 — RCBO 5SU1 2P 16A C Type A 30mA
• Siemens 5SU1324-7FA20 — RCBO 2P 20A 30mA Type A

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What to check before ordering

• Sensitivity: 30 mA for personal protection on socket and lighting circuits, 300 mA for fire protection on incomers.
• Type AC is for pure sinusoidal residual currents; type A also detects pulsating DC and is required where drives, UPS or electronics are fed.
• An RCBO replaces an MCB and an RCCB in one width — check the board space and busbar arrangement before switching.
• Confirm the number of poles and whether the neutral is switched.

Frequently asked questions

What is the difference between an RCBO and an RCCB?

An RCCB detects earth leakage only and must be backed by a separate MCB for overload and short-circuit protection. An RCBO combines both functions in one device, so a fault on one circuit does not trip the whole group.

Should I specify type A or type AC?

Type A wherever the circuit feeds variable frequency drives, switch-mode supplies, EV charging or modern electronics — these can produce pulsating DC leakage that a type AC device may not detect. Type AC is only appropriate for purely sinusoidal loads.

Why does my RCD keep tripping?

Usually accumulated standing leakage across several circuits rather than a single fault.

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