S-TEC Populated DB Surface 18Way

• The S-TEC 18-Way Pre-Populated Surface Mount Distribution Board is engineered for maximum capacity and flexibility in demanding residential and light commercial electrical installations.
• This premium, factory-assembled unit is equipped with high-performance S-TEC components, including a dependable 63A 2-Pole main isolator, a highly responsive 63A earth leakage device, and a practical assortment of miniature circuit breakers (1x32A, 3x20A, 2x10A).
• Housed in an expansive and durable ABS enclosure with a clear polycarbonate window, this 18-way board provides extensive space for current circuits and substantial future expansion, ensuring a streamlined installation process and adherence to the strictest safety protocols.
• It stands as "The Safe Option!" for comprehensive electrical management.

Features

• Enclosure: 18-Way Surface Mount DB-ST Series.
• Construction: Robust ABS body with a transparent Polycarbonate (PC) window for clear visibility of components.
• Pre-Populated: Includes S-TEC 63A 2-Pole Main Incomer Isolator.
• Earth Leakage Protection: S-TEC STL1-63 63A 1P+N 30mA Earth Leakage Device (RCCB).
• Circuit Protection (MCBs):
  • 1 x S-TEC ST47 32A 1P 3kA C-Curve Miniature Circuit Breaker.
  • 3 x S-TEC ST47 20A 1P 3kA C-Curve Miniature Circuit Breaker.
  • 2 x S-TEC ST47 10A 1P 3kA C-Curve Miniature Circuit Breaker.
• Internal Components: Fitted with Neutral Bar, Earth Bar, and an appropriate busbar (e.g., BB 6 MOD) for the included MCB connections.
• Extensive Spare Capacity: Offers a significant number of spare ways, ideal for complex installations and future circuit additions.
• Compliance: All components are fully compliant with NCRS (LOA & RCC), IEC, and SANS standards.
• Design: Aesthetically modern and clean, suitable for installations where the distribution board may be visible.
• Mounting: Designed for easy wall surface mounting with an integrated DIN rail for secure component fitting.

Benefits

• Simplified Large-Scale Installation: The pre-populated design greatly reduces installation time and complexity, even for extensive electrical systems.
• Maximum Safety Assurance: Provides top-tier protection against overloads, short circuits (MCBs), and critical earth leakage faults (RCCB), safeguarding people and property.
• Perfect Component Integration: All S-TEC components are selected for seamless compatibility and optimal performance within the system.
• Ultimate Future-Proofing: The 18-way capacity offers unparalleled flexibility for future expansions, modifications, and addition of specialized circuits.
• Built for Durability: Constructed from high-quality, resilient materials to ensure long-lasting service and reliability.
• Regulatory Adherence: Meets all key South African and international electrical safety standards, ensuring full compliance.
• Convenient Status Monitoring: The transparent window allows for quick and easy visual inspection of all protective devices.
• Broad Application Range: Perfectly suited for large homes, multi-dwelling complexes, extensive outbuildings, and diverse light commercial environments.

In-Depth Technical Specifications

A. S-TEC 18-Way Surface Mount Distribution Board (DB-ST-18W-PS)

B. Included S-TEC Components

1. Incomer Isolator (Main Switch)

• Type: Main Isolator
• Poles: 2-Pole (2P)
• Rated Current (In): 63A
• Rated Voltage (Ue): 230V/415V AC
• Mounting: DIN Rail
• Standard Compliance: Integral to NCRS (LOA & RCC) requirements

2. Earth Leakage Device (S-TEC STL1-63)

• Model: STL1-63
• Type: RCCB (Residual Current Circuit Breaker without overcurrent protection)
• Standard: VC8035, IEC61008-1, CE Marked
• Poles: 1P+N (2-Pole)
• Rated Current (In): 63A
• Rated Voltage (Ue): 230V AC
• Rated Frequency: 50/60 Hz
• Rated Residual Operated Current (IΔn): 0.03A (30mA)
• Rated Limited Short Circuit Current (IΔc): 6000A
• Rated Making & Breaking Capacity (Im / IΔm): 630A (for In=63A)
• Protection Degree: IP20
• Electrical Life Expectancy: 1000 operations
• Mechanical Life Expectancy: 2000 operations
• Ambient Operating Temperature: -30°C to +60°C (daily average ≤35°C)
• Best Ambient Temperature: 30°C
• Terminal Connection: Cable/Pin-type busbar (Top and Bottom)
• Tighten Torque (max): 3.0Nm
• Mounting: DIN Rail (35mm)

3. Miniature Circuit Breakers (S-TEC ST47 Series)

• Model: ST47
• Standard: SANS556-1, IEC60947-2, VC8036, CE Marked
• Poles: 1-Pole (1P)
• Rated Voltage (Ue): 230V AC
• Rated Frequency: 50/60 Hz
• Rated Breaking Capacity (Icn): 3kA
• Thermo-magnetic Release Characteristic: C-Curve (white toggle)
• Protection Degree: IP20
• Electrical Life Expectancy: 4000 operations
• Mechanical Life Expectancy: 10000 operations
• Ambient Operating Temperature: -30°C to +60°C (daily average ≤35°C)
• Best Ambient Temperature: 30°C (Calibrated for South Africa at 40°C)
• Terminal Connection: Cable/Pin-type busbar (Top and Bottom)
• Tighten Torque (max): 2.5Nm
• Mounting: DIN Rail EN 60715 (35mm)
• Specific MCBs Included:
  • 1 x ST47 32A 1P 3kA C-Curve
  • 3 x ST47 20A 1P 3kA C-Curve
  • 2 x ST47 10A 1P 3kA C-Curve

4. Busbar

• Type: BB 6 MOD (or equivalent 6-module pin-type busbar) included for the 6 outgoing MCB interconnections, leaving ample space on the DIN rail for additional busbars if required for future MCBs.

Ideal Use

• Very large residential estates, luxury homes with extensive electrical requirements.
• Multi-unit residential complexes (apartments, townhouses) requiring individual sub-distribution with spare capacity.
• Small to medium commercial buildings, office parks, and retail centers.
• Light industrial workshops or facilities with numerous distinct circuits.
• Installations requiring significant future scalability or the integration of multiple specialized circuits (e.g., solar PV inverters, backup generators, dedicated machinery).
• Any indoor or well-covered application demanding a high-capacity, robust, and compliant electrical distribution hub.

Tips

• Mandatory Professional Installation: This distribution board must be installed, comprehensively tested, and commissioned exclusively by a qualified, certified, and registered electrician in strict accordance with all local wiring regulations (e.g., SANS 10142-1).
• Critical Torque Adherence: Ensure all terminal connections are meticulously tightened to the manufacturer's precise torque specifications to prevent loose connections, overheating, arcing, and potential fire hazards.
• Consistent Earth Leakage Verification: Regularly (monthly is strongly advised) test the earth leakage device by pressing its integrated "T" (Test) button to confirm its correct functionality and life-saving capability.
• Strategic Use of Spare Ways: When populating the ample spare ways, always use S-TEC or other NCRS-approved compatible components. Plan circuit layouts carefully and ensure the total connected load remains within the board's and main incomer's rated capacity. Consider using additional correctly sized busbars for new groups of MCBs.
• Uncompromised Safety Protocol: Before opening the distribution board cover for any reason (inspection, maintenance, adding circuits, or any internal work), ALWAYS ensure the main electrical supply to the board is completely isolated, locked out, and tagged out.
• Optimal Installation Environment: Install in a clean, dry, well-ventilated, and easily accessible indoor or suitably covered location that respects the IP40 rating. Protect from excessive dust, moisture, corrosive atmospheres, and extreme temperatures.
• MCB Performance and Temperature: For optimal and safe performance of MCBs, be acutely aware of the ambient operating temperature. Consult the S-TEC ST47 datasheet for detailed temperature derating factors if the board is installed in environments with consistently high ambient temperatures.