Siemens RCBO, type AC, C-char, 1P+N, 230V, 6kA, 30mA, 6A Part number 5SU1356-1KK06

Product Overview

The Siemens 5SU1356-1KK06 is an RCBO (Residual-Current Circuit Breaker with Overload protection) from the SENTRON 5SU1 series. It combines over-current/short-circuit protection with earth-leakage (residual-current) detection, providing both circuit protection and safety against ground faults in a single compact module. It is rated for single-phase AC distribution and is suitable for residential, commercial, and light-industrial electrical installations where both overload and residual-current protection are required.

Key Features

• RCBO: combines MCB (over-current/short-circuit) and RCD (residual-current) functions
• 1-pole + neutral (1P+N) configuration — protects phase and neutral conductors
• Rated current: 6 A — suitable for small- to medium-load circuits
• Tripping characteristic: Curve C — handles moderate inrush currents (e.g. lighting, small motors)
• Residual-current sensitivity: 30 mA (AC type) — protects against earth faults / leakage current
• Breaking capacity (short-circuit): 6 kA (Icn) — complies with relevant low-voltage protection standards
• DIN-rail mounting, 2-module width — convenient installation in distribution boards or sub-panels
• Touch-protected terminals (IP20 when installed) — safe installation in enclosed switchboards
• Integrated over-voltage, surge and insulation protection — suitable for typical installation environments

Technical Specifications

• Article Number: 5SU1356-1KK06
• Product Type: RCBO (Residual-Current Circuit Breaker with Overload protection)
• Poles: 1P + N (phase + neutral)
• Rated Current (In): 6 A
• Rated Voltage: 230/240 V AC (single-phase)
• Tripping Curve: Type C
• Residual-Current Trip Threshold (IΔn): 30 mA (AC type)
• Short-Circuit Breaking Capacity (Icn): 6 kA
• Insulation Voltage (Ui): 264 V
• Surge Withstand / Impulse Voltage (Uimp): 4,000 V
• Mechanical Service Life: ~10,000 switching cycles
• Protection Rating (mounted in enclosure): IP20
• Mounting: DIN-rail; 2-module width

Compliance & Standards

• Part of Siemens SENTRON 5SU1 protection range — conforms to low-voltage protection standards for RCBOs
• Provides combined overload, short-circuit, and residual-current protection in one device — simplifies circuit protection design
• Suitable for single-phase AC distribution circuits requiring safety against earth leakage and over-current faults

Applications

The 5SU1356-1KK06 is ideal for protecting branch circuits in residential, commercial, and light-industrial installations — especially where both overload protection and earth-fault safety are required. Typical uses include lighting circuits, socket outlets, small motor loads, control circuits or sensitive equipment feeds. It is particularly useful in distribution boards or sub-panels where space is limited but full protection (MCB + RCD) is required.