an adequate excess stroke the structure according to the invention consequently enables functional testing even before the securing of the armature assembly defective assemblies can thus be rejected early on after this excess stroke test a slide 96 located in the measuring device 90 is lowered in the arrow direction 97 the armature 3 is detained by a permanent magnet 98 fixed on the slide 96 the measuring device is now moved up double arrow 95 with the armature assembly taking account of the excess stroke by a distance fig6 which corresponds to the desired contact separation 29 the bearing strips 25 and 26 of the armature contact assembly are now at the desired height relative to the bearing supports 15b 16b of the base assembly in this position the bearing strips 25 and 26 are respectively welded to the bearing supports 15b and 16b against which they rest the welding may be effected for example as resistance welding or laser welding afterwards the magnetic system the coil 5 with the core 6 the pole shoes 7 and the permanent magnet 4 is pushed on to the base assembly until the desired armature stroke is reached the coil former 50 clamps on the basic body 10 of the base the horizontal ribs 54 of the coil former on the vertical ribs 19 of the base if necessary together with further ribs not illustrated on both parts ensuring a tight fit in any desired position both monostable and bistable switching properties of the relay can be achieved by adjusting the permanent magnet 4 a monostable switching property can also be achieved by means of an additional partition not.