- Allows a thermostat or other switching device to switch loads greater than its normal capacity
- Can be used for either single phase or three phase loads
- Optional enclosure available
- Enclosure comes with DIN rail for quick contactor mounting
Range & Prices
The prices shown are list prices and perfectly safe to use for budget purposes. Contact your electrical wholesaler for final prices.
Model | Poles | Amps per Pole | Max kW per Pole @230V | List Price |
CON-32 | 3 | 32 | 7 | £60.00 |
CON-50 | 3 | 50 | 11.5 | £78.00 |
CON-80 | 3 | 80 | 18 | £176.00 |
ENCL-D | Enclosure for CON-32 and CON-50 | £32.00 |
Selection
A contactor will allow a switching device such as a thermostat, timer or movement sensor to control a heater with a load greater than the device’s switching capacity. As all the contactors in the BN Thermic range are ‘three-pole’ they will also enable a single pole device to switch a three phase load.
Using the following table, it is easy to select the contactor capable of switch any given load.
Model | Poles | Amps per Pole | Max kW per Pole @230V |
CON-32 | 3 | 32 | 7 |
CON-50 | 3 | 50 | 11.5 |
CON-80 | 3 | 80 | 18 |
ENCL-D | Enclosure for CON-32 and CON-50 |
Enclosure comes complete with DIN rail for quick fitting of contactor.
CAUTION
When selecting a contactor to switch halogen heaters, the contactor should be over-rated by 100%
When working with voltages other than 230V 1ph or 400V 3ph & N, please consult BN Thermic
Examples
Using a 10A thermostat to switch a 4kW 230V 1ph underfloor heating mat
The 4kW mat will draw a nominal 17A. As the mat is operating on a single phase, the load will be switched using a single pole. Therefore we can select the CON-32 which is capable of switching up to 32 A per pole.
Using a 10A thermostat to switch a 30kW 4000V 3ph & N heating system.
The 30kW heating system will draw a nominal 44A per phase. As the system is operating on all three phases, the load will be switched using all three poles. We would therefore select the CON-50 which is capable of switching up to 50A per phase.