Single Pole MCB 10A

Description

Single Pole MCB 10A — SCB8-63 1P 230V/400VAC Lighting & Small-Load Circuit Breaker

The Single Pole MCB 10A is the smallest commonly-installed circuit breaker in Kenyan domestic and small-commercial wiring. At ten amperes nominal trip, it is purpose-built for the low-current branches that fill the bottom rows of almost every consumer unit — lighting loops, security camera cabinets, alarm system controllers, electric gate motors, doorbell transformers, individual TV and computer points, and the dedicated small-power feeds that keep modern smart-home installations alive.

Because the 1P configuration switches only the live conductor, this breaker occupies just one 18-millimetre module on the DIN rail. That compactness matters: a typical residential lighting design needs four to eight separate lighting circuits across a property — entrance, lounge, bedrooms, kitchen, exterior, outbuildings — and dedicating a 1P breaker per zone uses panel space that would be wasted by oversized double-pole devices.

Where this breaker fits in your installation

• Domestic lighting zones: One 10A 1P per area (lounge, bedrooms, kitchen, hallway, bathroom, garden) gives clean fault isolation when a single fitting fails.
• Exterior security lighting: Floodlights, PIR-activated fittings, and dusk-to-dawn perimeter lamps around the compound.
• CCTV and alarm cabinets: The 230V feed powering a DVR, NVR, or central alarm panel along with its low-voltage power-supply unit.
• Electric gate motors: Sliding and swing-gate drives drawing roughly four to seven amperes during the brief opening cycle.
• TV and computer outlets: A dedicated point per major audio-visual or home-office position, ahead of a surge protection strip.
• Doorbells, intercoms, and gate phones: Small transformers feeding 24V or 12V doorbell, video-intercom, and biometric access systems.
• Servant-quarter, gatehouse, and guard-room circuits: Lighting and a single socket inside compounds.
• Small inverter and UPS feeds: Backup units below 1.5 kW capacity that draw under nine amperes from the AC input.

Why a single pole is the right choice for these circuits

The conversation in Kenyan electrical installations sometimes pushes installers toward double-pole devices for every circuit. For sockets and high-energy loads that is a reasonable instinct — fully isolating live and neutral matters when servicing kettles, heaters, and motors. For lighting circuits and small electronic loads, single-pole protection is universally accepted as adequate. The neutral remains bonded to the supply, the live conductor is interrupted on fault, and the energy levels involved are low enough that a touched neutral after a fault does not present a meaningful shock risk. Reserving 2P breakers for socket and appliance circuits, and using 1P breakers for lighting and ancillary loads, is the standard layout convention found in every EPRA-compliant consumer unit specification in the country.

Technical Specifications

Notable Features

• Slim single-module body — packs eight lighting zones into the same panel space that four double-pole breakers would consume, freeing modules for RCDs and main switches.
• C-curve trip characteristic — handles the brief inrush from electronic ballasts and LED drivers without false tripping, while still clearing genuine short circuits inside the first half-cycle.
• Visible coloured indicator — at-a-glance verification that a lighting zone is OFF before changing a damaged ceiling rose or replacing a faulty light fitting.
• Wide cable mouth — comfortable termination of 1.5mm² and 2.5mm² conductors typical of lighting and small-load wiring.
• Heat- and tracking-resistant moulded housing — proven against the dust and humidity found in older Kenyan distribution boards.
• Snap-fit DIN rail mount — replace an aged breaker on a live panel (after upstream isolation) in well under thirty seconds.
• Common platform — identical depth and front-face profile as the 2P, 3P, and 4P variants in the same SCB8-63 family, giving a uniform panel appearance.
• Reliable mechanical reset — twenty thousand operations of guaranteed life cover several decades of routine homeowner use.

Common Installation Scenarios Across Kenya

• Up-country home wiring with separate lighting circuits for indoor zones and external security lights
• Apartment unit lighting protection inside a multi-storey residential block consumer unit
• Kiosk, salon, and barbershop lighting and till-point feeds inside shopping arcades
• CCTV head-end cabinets at commercial premises, schools, and church compounds
• Sliding electric gates and roller-shutter motors at residential and small business properties
• Alarm system enclosures inside both domestic and commercial security installations
• Greenhouse ventilation fans, hydroponic timers, and small horticultural control panels
• Caretaker and gate-house lighting and TV feeds in larger Nairobi suburb compounds

Installation Notes

Three points matter most when installing a 10A single-pole breaker. First, the cable feeding it must be 1.5mm² minimum copper for a pure lighting circuit, stepping to 2.5mm² when the circuit carries a single small appliance alongside lights or when the cable run exceeds twenty metres. Second, the live conductor lands on the breaker’s incoming terminal — neutral and earth bypass the breaker entirely and connect directly to the panel’s neutral and earth bars. Third, no permanent loads above eight amperes should sit on a 10A circuit; modern LED lighting almost never approaches that limit, but an installer should still verify the total VA load of all fittings on the zone before commissioning. For mixed lighting-and-socket zones (common in older Kenyan installations), the 16A 1P variant on a related product page may be more appropriate.

This breaker is overcurrent protection only; it does not detect earth-leakage faults. Modern best practice places every lighting circuit in a Kenyan home behind an upstream 30mA RCD or 100mA RCD depending on the zone, giving combined shock-and-overcurrent protection. The single-pole MCB is paired with the RCD on the same busbar, never installed alone where shock protection is required.