Why Choose the ABB EPH-S66112 Protecta Home 12-Way 63 A RCCB Consumer Unit?
The ABB EPH-S66112 is a 12-way, 63 A RCCB-controlled consumer unit from the ABB Protecta Home range, designed for residential and light commercial electrical distribution. Featuring a 63 A residual current circuit breaker (RCCB) as its incoming protective device, this consumer unit combines residual current protection with a practical arrangement for distributing electricity to multiple outgoing circuits.
With 12 outgoing circuit ways, the EPH-S66112 provides a versatile distribution solution for installations requiring a single RCCB-protected circuit group. Its incoming RCCB monitors residual current imbalance and disconnects the associated circuits when its specified operating conditions are met, supporting electrical safety when installed as part of a correctly designed protection system.
Housed in a durable steel enclosure measuring 250 × 330 × 105 mm, the ABB EPH-S66112 offers additional circuit capacity compared with smaller Protecta Home consumer units. The assembly is supplied with its specified factory-fitted RCCB, shrouded busbar, neutral and earth bars, and installation instructions, providing a convenient foundation for professional electrical distribution installations.
Key Advantages
- 12-way consumer unit provides capacity for multiple outgoing electrical circuits.
- 63 A incoming RCCB provides residual current protection for the associated circuit group.
- Single RCCB-controlled configuration offers a straightforward electrical distribution arrangement.
- Factory-fitted RCCB simplifies installation of the incoming protective device.
- Durable steel enclosure provides robust housing for electrical distribution equipment.
- 250 × 330 × 105 mm nominal dimensions support practical installation planning.
- RAL 7035 light grey finish provides a professional enclosure appearance.
- Shrouded busbar supports organised connections to compatible outgoing protective devices.
- Neutral and protective earth bars provide designated conductor termination points.
- 12 modular outgoing positions offer flexibility when planning lighting, socket outlet and fixed appliance circuits.
- Suitable for use with appropriately selected ABB modular circuit protection devices.
- Part of the established ABB Protecta Home electrical distribution range.
- Suitable for domestic installations, consumer unit replacements and electrical refurbishment projects.
- Identified by ABB manufacturer order code 1TVS151800S3054.
Key Features
- ABB Protecta Home consumer unit series.
- EPH-S66112 12-way RCCB consumer unit.
- 12 outgoing circuit ways.
- 12 outgoing modular positions.
- 63 A incoming residual current circuit breaker.
- Single RCCB-protected distribution group.
- RCCB-controlled incoming switching arrangement.
- Factory-fitted residual current protective device.
- Steel enclosure construction.
- RAL 7035 light grey enclosure finish.
- Shrouded busbar supplied.
- Neutral termination bar supplied.
- Protective earth termination bar supplied.
- Installation instructions included.
- Designed to accommodate compatible outgoing miniature circuit breakers.
- Suitable for professional electrical installation and maintenance.
- Nominal height: 250 mm.
- Nominal width: 330 mm.
- Nominal depth: 105 mm.
- ABB manufacturer order code 1TVS151800S3054.
Flexible 12-Way Electrical Distribution with 63 A RCCB Protection
The ABB EPH-S66112 is designed for electrical installations requiring a consumer unit with a single incoming residual current protective device and sufficient space for multiple outgoing circuits. Its 12-way configuration provides capacity for compatible miniature circuit breakers and other approved modular protective devices, allowing electricians to organise lighting, socket outlet and fixed appliance circuits according to the installation design.
The consumer unit incorporates a 63 A RCCB as its incoming protective device. Unlike a main switch-only consumer unit, this arrangement provides residual current protection for the outgoing circuits connected through the RCCB. The device monitors the balance between outgoing and returning current and disconnects the protected circuits when a qualifying residual current imbalance occurs.
The 63 A rating describes the current-carrying capacity of the RCCB and must not be confused with its residual current operating sensitivity. The precise residual current sensitivity, RCCB type and operating characteristics should be confirmed from the installed protective device specification and matched to the electrical installation requirements.
Because the EPH-S66112 uses a single RCCB-controlled arrangement, a residual current fault on one outgoing circuit may cause the incoming RCCB to disconnect all circuits supplied through it. This shared protection arrangement should be considered when assessing circuit grouping, continuity of supply and the suitability of the consumer unit for a particular installation.
Importantly, an RCCB does not independently provide overload or short-circuit protection. Appropriate miniature circuit breakers or other compatible overcurrent protective devices must therefore be selected for the outgoing circuits. Suitable upstream overcurrent protection must also be provided for the RCCB in accordance with the installation design and ABB instructions.
The incoming RCCB may provide switching and isolation functionality where the installed device is approved and suitable for that purpose. However, the EPH-S66112 is an RCCB-controlled consumer unit rather than a separate 63 A main switch plus RCCB configuration. This distinction is important when comparing different ABB Protecta Home models.
The steel enclosure provides robust housing for the electrical distribution assembly. Its nominal dimensions of 250 × 330 × 105 mm, RAL 7035 finish, shrouded busbar and conductor termination bars provide an organised platform for professional installation.
Final protective device selection, conductor sizing, earthing arrangements, circuit coordination and installation methods must comply with ABB instructions and applicable electrical installation regulations, including relevant BS 7671 requirements.
Typical Applications
- Residential electrical consumer unit installations.
- Domestic distribution boards requiring 12 outgoing circuit ways.
- Electrical installations requiring a 63 A incoming RCCB.
- Single RCCB-controlled electrical distribution systems.
- Lighting and socket outlet circuit distribution.
- Fixed appliance circuits using compatible outgoing protective devices.
- Residential properties requiring additional outgoing circuit capacity.
- Consumer unit replacement and electrical refurbishment projects.
- Suitable indoor utility and electrical distribution areas.
- Light commercial electrical distribution installations.
- Professional electrical contracting and building services projects.
