The WHT35 has been replaced with the WHB340-RG however we don't do spare mechanisms for it.
Surface Switches - Weather Protected, Surface Switches - WHB Series - Weathershield - IP66, Switch 440V 40A - triple pole.
The WHA/WHB/WHC series of weatherprotected isolating switches is a robust range of switches suitable for virtually any external application. The impact resistant base and cover will survive the hardest knocks in almost any installation. The two sections are sealed with a co-injection gasket. The range provides ample conduit entries and is suitable for side entry from a vertical duct. Its compact size means it is aesthetically pleasing and suits installations where space is limited such as with residential air conditioning applications.
Please see following link under the documentations tab for complete whb range and technical data.