Niglon Protego 19 Way Main Switch SPD Consumer Unit
PCU2220M/SPD – 100A Main Switch Consumer Unit with Type 2 Surge Protection
The Niglon Protego 19 Way Main Switch SPD Consumer Unit is a metal consumer unit combination created by Electrical4Less for electricians requiring reliable circuit distribution with Type 2 surge protection. Based on the original Niglon Protego PCU2220M, this 22-module enclosure features a 100A double-pole main switch, 19 usable outgoing ways and practical installation features for domestic and suitable light commercial electrical installations.
Electrical4Less combines the standard Niglon Protego consumer unit with a compatible Niglon single-module Type 2 SPD and a meter tails gland. This convenient package allows installers to purchase the main components together while selecting their preferred compatible Niglon RCBOs separately.
Electrical4Less Exclusive – Why 19 Ways Instead of 20?
Niglon does not supply this particular Protego consumer unit as a standard factory-packaged SPD version. To offer electricians a convenient alternative, Electrical4Less has created the PCU2220M/SPD combination using genuine Niglon components.
The original PCU2220M consumer unit provides 20 free ways within its 22-module enclosure. Our combination adds a single-module Type 2 surge protection device, occupying one of those available ways and leaving 19 usable ways for outgoing protective devices.
The included SPD connects directly to the busbar in the specified arrangement, without requiring an additional protective MCB. This helps preserve circuit capacity while providing surge protection.
The Niglon Protego 19 Way Main Switch SPD Consumer Unit is therefore an Electrical4Less combination SKU, rather than a separate factory-manufactured Niglon model. The manufacturer’s original PCU2220M technical information relates to the 20-way consumer unit before the additional SPD is fitted.
Niglon Protego Range – Designed for Professional Electricians
The Niglon Protego consumer unit range combines durable steel construction with practical installation features designed to assist electricians during consumer unit replacements, rewires and new installations.
The Protego enclosure features a modern curved cover, powder-coated steel construction and an internal layout intended to simplify cable routing and protective device installation.
Installer-friendly features include:
- Built-in spirit level to assist with accurate enclosure positioning.
- Raised DIN rails for easier access to terminals and cable routing.
- Multiple round cable entry knockouts for flexible installation.
- Square rear knockouts to accommodate cables entering from behind the board.
- Robust curved 1.2mm steel cover construction.
- Accessible earth and neutral terminal arrangements.
- Large terminal screws designed for secure conductor termination.
- Powder-coated RAL 9010 steel enclosure with rounded edges.
- Right-hand main switch arrangement.
These features make the Protego range a practical option for electricians who require a well-organised consumer unit with room for conductor termination, suitable cable entry positions and straightforward protective device installation.
19 Usable Ways for Domestic and Light Commercial Installations
The Niglon Protego 19 Way Main Switch SPD Consumer Unit provides considerable circuit capacity within a single metal enclosure. With 22 total modules and 19 usable ways after allowing for the Type 2 SPD, it offers flexibility for electrical installations requiring numerous outgoing circuits.
This configuration is particularly useful for residential properties with separate lighting and socket circuits, kitchen appliances, electric showers, heating systems and other dedicated electrical supplies.
Individual circuit protection can also be planned for suitable outdoor supplies, garages, utility rooms and additional fixed electrical equipment.
The number and arrangement of outgoing circuits must be determined by the electrician according to the installation design, circuit loading, protective device selection and applicable BS 7671 requirements.
Type 2 Surge Protection Included
The PCU2220M/SPD package includes a compatible Niglon Type 2 surge protection device designed to help protect connected electrical equipment against transient overvoltages.
Transient overvoltages may arise from electrical switching operations or indirect lightning-related events. These disturbances can affect sensitive equipment such as computers, televisions, smart home controls, appliances and other connected electronics.
The supplied single-module SPD is designed for direct busbar connection in the specified Protego arrangement, without requiring a separate MCB for the SPD. This helps retain 19 usable outgoing ways within the consumer unit.
The Niglon Protego 19 Way Main Switch SPD Consumer Unit offers electricians a convenient way to incorporate Type 2 surge protection into a new or replacement consumer unit installation.
SPD selection, protective coordination, earthing arrangements and installation must follow the manufacturer’s instructions and relevant requirements of BS 7671.
100A Double Pole Main Switch
The original Niglon PCU2220M consumer unit incorporates a 100A double-pole main switch, providing a means of isolating the consumer unit assembly.
The right-hand incomer arrangement allows the incoming supply conductors to be terminated at the designated main switch position, helping electricians plan cable entry and internal conductor routing.
The main switch and associated consumer unit arrangement must be installed according to the manufacturer’s instructions, supply characteristics, upstream protective device and conductor sizing requirements.
Meter Tails Gland Included
Electrical4Less includes a meter tails gland with the PCU2220M/SPD combination to provide an additional accessory for the incoming supply cable entry.
When correctly selected and installed, the gland helps achieve a tidy and secure cable entry

