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British General 8-24V 8VA Bell Transformer Module (8707P)

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British General 8-24V 8VA Bell Transformer Module (8707P)

For use with metal or insulated consumer units and enclosures. Provides constant power to a mains-powered door bell. Can be used in a high integrity circuit. Works with a hard wired door bell, stepping down the voltage from 230V to 8-24V.

  • Output Voltage: 8-24V
  • DIN Rail Mounted Fitting
  • Overload Protection
  • Model No: CUB1-01
  • 1 Year Guarantee
  • 2 Modules

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View all: British General Doorbell Transformers

£8.95INC VAT

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British General 8-24V 8VA Bell Transformer Module is rated 4.7 out of 5 by 37.
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Rated 4 out of 5 by from For Nest Doorbell Easy to install and I have paired with the Wylex switch box. For the nest you actually need 24V if you want to power a door chime with the install. I tried 16V and just couldn't get a ding dong even recording 15.9V at the chime. Up powered to 24V and we were ding-dong merrily on high. I've not had any problems with the Nest receiving a higher voltage. Been installed a couple of weeks trouble free.
Date published: 2020-10-15
Rated 5 out of 5 by from transformer for google nest very simple - would be nice to have a simple diagram for general public to wire up. Scored 3 on performance and reliability as only just installed it few days ago.
Date published: 2020-10-12
Rated 5 out of 5 by from Spot on! Bell transformer Compact 2 slot din rail bell transformer. Tidier than having a stand alone unit. Does the job nicely although if you aren’t an electrician you would have to get one to do the job for you.
Date published: 2020-09-25
Rated 5 out of 5 by from Perfect 4 nest hello doorbell Perfect to use with nest hello video doorbell. When wiring the doorbell use pin 1 and 4.. The enclosure for this product is called ip40.
Date published: 2020-08-28
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will this transformer fit in the WYLEX ESE2 IP40 2-MODULE UNPOPULATED DIN ENCLOSURE?

Asked by: ranevi

Would this fit a Mk consumer unit

Asked by: JM1504
Hi JM1504, We have not had any MK enclosures for testing but potentially it would fit because most manufacturers' devices are pretty much standard in dimension, but the 18th edition regulations make the installer responsible for any warranties where mixing manufacturers so this is something to be aware of before deciding whether to go ahead or not.
Answered by: Nexus Technical Team
Date published: 2020-09-28

Nm - How Tight do you Tighten then screw connections

No documentation was provided just unit and box. Can you confirm how tight this units needs to be tighten in Nm? MCB are normally tightened to Nm 2-2.5 RCD are normally tightened to Nm 2.5-3
Asked by: MecoMac
Hi MecoMac, Due to the much smaller terminal screw sizes the CUB1 has a 0.8Nm torque level.
Answered by: Nexus Technical Team
Date published: 2020-09-08

Anyone experienced the transformer making a buzzing noise and unit getting hot?

We've replaced our standard 8v transformer to this one for the Nest Hello bell, we've noticed that the unit is making a humming noise and it gets quite hot. Anyone knows why and do you think there is a problem with it?
Asked by: Annakent
Hi Annakent, Audible noise and heat buildup in a transformer can indicate an incompatible load, most likely an overload drawing too much power through the transformer. This transformer has a maximum 8W output, so at 8V it outputs 1A, at 12V 2/3A and at 24V 1/3A (if the Hello needs more than this level of power then that will be the cause of the observed effects).
Answered by: Nexus Technical Team
Date published: 2020-09-08

This has connections which go from 0-8-12-24V. Can I wire this to give me 16V by connecting the 8 and the 24?

Asked by: Jeff16V
Unless they have done something very weird inside, which does not represent the taps shown on the case then what you say should give you the 16V.
Answered by: ZiggyZag
Date published: 2020-07-15
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Specification
Amp Rating 8 VA
Brand British General
Brand British General
CSU Device Bell Transformers
Incomer Fitting Type DIN Rail Mounted
Manufacturer Guarantee 1 Year Guarantee
Model No CUB1-01
Overload Protection Overload Protection
Pack Size 1
Pieces in Pack/Case 1
Power Voltage Supply 230 V
Product Depth 68 mm
Product Height 80 mm
Product Type Bell Transformer Module
Product Width 35 mm
Terminal Capacity Terminals accept up to 16mm² cable