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Tofco CPP Limited. Meadowfield Ind Est., Ponteland, Northumberland. NE20 9SD
Tel: 01661 860001  Fax: 01661 860002  e-mail:  Web site:



TOFCO present the latest development in Intelligent Cut-out Technology.


 Moulded from flame retardant self extinguishing ABS


 32a DP Switch, 1 x BS88 Fuse Carrier Pre-Wired for 1 Lantern Circuit
Tofco Voltage Regulator / Line Conditioning Unit

Height 382 x Width 90 x Depth 91 mm.

This example is fitted with 4no. Terminal Blocks to accept up to 25mm2 circular conductors and an Internal IP7 Brass plate.

MCB, RCBO and Fuse Carriers can be fitted.

Time control devices can also be fitted.

Two and three way extension boxes are available.

Brass Ferrules with cable clamps or Cable Glands can be supplied / fitted to any extension box.

External Brass Plates are also available.

Other configurations are also available, please call for details.

The TVR-LCU unit is designed to provide cost savings at installation stage with the added bonus of additional electrical protection for the lantern, control gear & CMS system.

The TVR-LCU unit combines “Voltage Regulation” and “Line Conditioning” in one compact unit that fits within the TOFCO extension box it can be used with a Cut-out Unit or Switched Isolator Unit.

Volt drop is a major concern for lighting designers due to the long length of cable runs within street lighting.

The traditional solution to volt drop is to increase the cable size ensuring that the voltage at the end of the run fall within the standards as stated within Appendix 12, Table 12A of the 17th Edition Wiring Regulations BS7671

“The volt drop between the origin of any installation and any load point should not exceed 3.5%”


The TVR-LCU unit boosts the voltage at each lighting point, ensuring a constant voltage is delivered throughout the installation and  eliminating the VOLT DROP issue over cable runs.

The result is that smaller cables can be used providing instant cost and carbon reduction savings.

The TVR-LCU unit has two key components –

TVR – Tofco Voltage Regulator

LCU – Line Conditioning Unit


  • Improve Power Quality
  • Power supply conditioning – ensures stable and constant power is delivered to each lighting point.
  • Voltage regulation – prolongs lamp & control gear life.
  • Reduction in cable sizes, instant cost saving on purchase price of cable.
  • Smaller cables are quicker to install and terminate, saving on labour costs.
  • Reduction in energy waste = reduced running costs.

LCU FEATURE within the product includes the protection and filtering against the following:-

  • Spikes and electrical noise.
  • Sags and Brownouts.
  • Voltage Harmonics.
  • Momentary interruptions and mains failures.
  • Transient voltages & lightening strikes.
  • Soft Start.
  • Minimise power up surges.
  • Reduced maintenance.

The TVR-LCU will take the burden off cables, connections, contactors and the mains supply transformer when a large number of Public Lights are switched-on sequentially.

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Tofco CPP Limited. Meadowfield Ind Est, Ponteland, Northumberland, NE20 9SD. Tel: 01661 860001   Fax: 01661 860002   e-mail:

The content of this web site is the intellectual property of Tofco CPP Limited. The materials contained in the Site may be downloaded or copied provided that ALL copies retain the copyright and any other proprietary notices contained on the materials. No material may be modified, edited or taken out of context such that its use creates a false or misleading statement or impression.  Whilst every care is taken to ensure that the information contained in this publication is correct, no legal responsibility can be accepted for any inaccuracy. The company reserves the right to alter or modify the information contained therein at any time in the light of technical or other developments.