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British General 20A DP Contactor (6654P)

£ 8.99INC VAT

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British General 20A DP Contactor (6654P)

20A. Double pole. Single-module. For use with consumer units and enclosures. Used to switch a circuit on or off from another circuit. Ideal for controlling large lighting loads, heating or ventilation systems.

  • DIN Rail Mounted Fitting
  • NO (Normally Open)

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£8.99INC VAT

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British General 20A DP Contactor is rated 4.7 out of 5 by 7.
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Rated 5 out of 5 by from Excellent contactor. I used a pair of these to control a single extractor fan. I needed one fan (we only had one possible flue outlet through the roof) to extract two separate rooms independent of each other. In either room the light could be switched on and the fan would run. Have been working fine for a quite a while in a shared 9 bed house!
Date published: 2020-05-28
Rated 3 out of 5 by from Noisy Simple double pole contactor straight forward to install. Hoped to use to control hot water from a Nest Heat Link. Whilst it switches OK even when not under the load of the immersion heater it hums alot. All contactors hum but this is quite noticeable such that the flat owners have asked for an alternative / humfree one to be fitted
Date published: 2020-05-05
Rated 5 out of 5 by from Good Relay I have used this contractor in combination with a photocell for switching outdoor lighting. Hope they get some more in soon.
Date published: 2019-12-22
Rated 5 out of 5 by from Used with nest thermostat Used this to switch the 16 amp immersion heater as the nest smart thermostat is limited to a 3 amp switching load. Mounted in a small enclosure next to the nest heat link and it works great.
Date published: 2019-08-04
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Can this be used with an emergency stop button to switch off a circuit?

Asked by: callumc512
HI callumc512, If the emergency stop button is feeding power to the control circuit of the contactor under `normal' circumstances and then cuts this off when `hit / triggered' then yes that would work.
Answered by: Nexus Technical Team
Date published: 2020-11-20

Can this be used as an "always on" transformer to power a video doorbell?

Asked by: BarryM1275
Hi BarryM1275, This is a Double Pole Contactor, _not_ a transformer, so no it doesn't sound like your requirements are compatible with the functions of this device.
Answered by: Nexus Technical Team
Date published: 2020-10-23

Duty cycle

What is the duty cycle of this contactor? Would it last being activated every 10 minutes whilst controlling a heating load?
Asked by: Mic2876uk
Hi Mic2876uk, Switching every 10 minutes should not pose any problems with a suitable load, but it would potentially bring the contactor to it's expected number of switching cycles (roughly 2 million on average) much quicker than might normally be expected.
Answered by: Nexus Technical Team
Date published: 2020-10-07

Data / wiring diagram

Please could you attach a data / wiring diagram. Also could this be fitted in any suitably insulated enclosure or does it have to be rail mounted in a CU
Asked by: Mic2876uk
Hi Mic2876uk, You can see more images & information about the contactor on our own website:- https://www.bgelectrical.uk/circuit-protection/consumer-units/devices under the Control Devices sub-tab. Basically there is a terminal diagram on the front of the contactor which basically indicates that when activated terminals 1 & 2 connect and terminals 3 & 4 connect, and that the control connections are A1 & A2. Realistically there is no specific polarity requirement so you can wire the terminals in whichever way is most convenient for the installation wiring. As for mounting, it is set up for a DIN rail mount only so we would advise using this option for secure fixing.
Answered by: Nexus Technical Team
Date published: 2020-11-29

What enclosure is good

I want to use 5 of these to control the central heating in a large building What is a suitable enclosure?
Asked by: John470
Hi John470, The best option would realistically be the British General CFSW07 9-Module 7-Way Part-Populated Main Switch Consumer Unit (3571X), as this will give you an isolator locally to them (in case you need to do any work on the circuits or change a contactor) and has sufficient space for the 5 stated devices plus a spare 2 ways just in case.
Answered by: Nexus Technical Team
Date published: 2020-11-11
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Specification
Amp Rating 20 A
Brand British General
Breaking Capacity 6 kA
CSU Device Contactors
Incomer Fitting Type DIN Rail Mounted
Manufacturer Guarantee 1 Year Guarantee
Model No CUC20
No. of Phases Single-Phase
Number of Poles Double Pole
Number of Poles Double Pole
Pack Size 1
Pieces in Pack/Case 1
Power Voltage Supply 230 V
Product Depth 68 mm
Product Height 85 mm
Product Type Contactor
Product Width 17 mm
Terminal Capacity Terminals accept up to 16mm² cable