Electrically conductive yarn with a core-coat structure: (i) a core of at least one multifilament yarn, (ii) a coat, comprising a mixture of (iia) thermoplastic elastomers and (iib) at least one electrically conductive material, characterised in that (iii) the multifilament yarn that is provided as the core (iiia) has a breaking strength according to DIN EN ISO 2062:04/2010 of 40 to 300 cN/tex, (iiib) has an elongation at break according to DIN EN ISO 2062:04/2010 of maximum 25 %, (iiic) has a maximum of 6% thermal shrinkage at 180°C according to the historical DIN 53866 T3 (03/1987), (iiid) has a titre of 100 to 1200 dtex for a multifilament yarn of organic polymers or has a diameter in the range from 200 to 600 μm for a multifilament yarn made of non-organic materials, (iv) the coat (iva) contacts the core and completely encloses it, (ivb) has a thickness of at least 10 μm, (ivc) has an electrical conductivity of at least 150 S/m according to DIN 54345-5:07/1985, (ivd) the electrically conductive material has an electrical conductivity of at least 3×10 2 S/m as determined in the description, (ive) contains 1 to 45% by weight of electrically conductive material, (ivf) contains 99 to 55% by weight of thermoplastic elastomer, (ivg) the coat material has a maximum thermal shrinkage of 6% at 180°C according to the historical DIN 53866 T3 (03/1987). (i) a core of at least one multifilament yarn, (ii) a coat, comprising a mixture of (iia) thermoplastic elastomers and (iib) at least one electrically conductive material, characterised in that (iia) thermoplastic elastomers and (iib) at least one electrically conductive material, (iii) the multifilament yarn that is provided as the core (iiia) has a breaking strength according to DIN EN ISO 2062:04/2010 of 40 to 300 cN/tex, (iiib) has an elongation at break according to DIN EN ISO 2062:04/2010 of maximum 25 %, (iiic) has a maximum of 6% thermal shrinkage at 180°C according to the historical DIN 53866 T3 (03/1987), (iiid) has a titre of 100 to 1200 dtex for a multifilament yarn of organic polymers or has a diameter in the range from 200 to 600 μm for a multifilament yarn made of non-organic materials, (iiia) has a breaking strength according to DIN EN ISO 2062:04/2010 of 40 to 300 cN/tex, (iiib) has an elongation at break according to DIN EN ISO 2062:04/2010 of maximum 25 %, (iiic) has a maximum of 6% thermal shrinkage at 180°C according to the historical DIN 53866 T3 (03/1987), (iiid) has a titre of 100 to 1200 dtex for a multifilament yarn of organic polymers or has a diameter in the range from 200 to 600 μm for a multifilament yarn made of non-organic materials, (iv) the coat (iva) contacts the core and completely encloses it, (ivb) has a thickness of at least 10 μm, (ivc) has an electrical conductivity of at least 150 S/m according to DIN 54345-5:07/1985, (ivd) the electrically conductive material has an electrical conductivity of at least 3×10 2 S/m as determined in the description, (ive) contains 1 to 45% by weight of electrically conductive material, (ivf) contains 99 to 55% by weight of thermoplastic elastomer, (ivg) the coat material has a maximum thermal shrinkage of 6% at 180°C according to the historical DIN 53866 T3 (03/1987). (iva) contacts the core and completely encloses it, (ivb) has a thickness of at least 10 μm, (ivc) has an electrical conductivity of at least 150 S/m according to DIN 54345-5:07/1985, (ivd) the electrically conductive material has an electrical conductivity of at least 3×10 2 S/m as determined in the description, (ive) contains 1 to 45% by weight of electrically conductive material, (ivf) contains 99 to 55% by weight of thermoplastic elastomer, (ivg) the coat material has a maximum thermal shrinkage of 6% at 180°C according to the historical DIN 53866 T3 (03/1987).