Earth breaker effect on powerline communication

Earth breaker switches or circuit breakers can have a significant impact on the powerline communication, whether at low frequency (for controlling home automation equipment) or at high frequency (for transporting an Ethernet connection). The worst measured is the Debflex 707471. It causes a reduction in range of almost 500m. To this diminution must be added all the electrical appliances on the line. This attenuation was performed at the PLC frequency used by the Wattcubes . The influence is equivalent on higher frequencies used by homeplug as such as Devolo products.

There are no accurate rules even if the AC curves generally attenuate much more. The attenuation is essentially due to the construction of the differential itself. The phenomenon is the same for high-end or low-end products

The solution is to use a phase coupler

See also our application note about this

Brand Maximum current Sensitivity Model Type Attenuation(m) Phase coupler?
ABB 10A 30mA 471012 DS201LC10AC30 AC 109 YES
ABB 16A 30mA 471013 DS201LC16AC30 AC 109 YES
ABB 20A 30mA 471014 DS201LC20AC30 AC 140 YES
ABB 32A 30mA 471016 DS201LC32AC30 AC 109 YES
ABB 40A 30mA FH202 443151 A 3 NO
ABB 40A 30mA FH202 443051 AC 3 NO
ABB 63A 30mA FH202 443061 A 3 NO
ABB 63A tri 30mA F204 AC 3 NO
Debflex 40A 30mA 707471 AC 489 YES
EUR'OHM 25A 30mA 23025 AC 381 YES
EUR'OHM 40A 30mA 23140 A 3 NO
EUR'OHM 40A 30mA 23040 AC 381 YES
EUR'OHM 63A 30mA 23163 A 3 NO
EUR'OHM 63A 30mA 23063 Ac 180 YES
Gewiss 40A 30mA GW 94 827 A 3 NO
Gewiss 40A 30mA GW 94 827F A 3 NO
Gewiss 40A 30mA GW 94 627 AC 3 NO
Gewiss 63A 30mA GW 94 790F AC 3 NO
Gewiss 63A 30mA GW 94 790 AC 3 NO
Legrand 40A 30mA DX3-ID 411638 A 3 NO
Legrand 40A 30mA DX3-ID 411632 AC 231 YES
Legrand 40A 30mA DX3-ID 411611 AC 231 YES
Legrand 40A 30mA DX3-ID 411617 A 3 NO
Legrand 63A 30mA DX3-ID 411650 AC 3 NO
Legrand 63A 30mA DX3-ID 411651 A 3 NO
Legrand 63A 30mA DX3-ID 411506 AC 3 NO
Legrand 63A 30mA DX3-ID 411612 AC 2 NO
Legrand 40A 30mA DX 008690 AC 140 YES
Legrand 40A 30mA DX 008781 A 4 NO
Schneider 40A 30mA 23158 A 3 NO
Schneider 40A 30mA 23160 AC 66 YES
Schneider 63A 30mA 23165 A 3 NO
Schneider 63A 30mA 23167 AC 3 NO
Siemens 40A 30mA 5SM3 314-OKL A 140 YES
Zeiger 40A 30mA 255076 A 3 NO
Zenitech 40A 30mA 15FC62 A 3 NO
Zenitech 40A 30mA 15FC61 AC 231 YES