The new dimmers will be available in all ranges and are rated at 1-gang 2-way 400W, 2-gang 2-way 2x250W, 3-gang 2-way 3x300w, 4-gang 2-way 4x250W.
They are suitable for controlling standard incandescent mains voltage lighting, mains halogen, electronic transformers and Varilight dimmable CFLs. J-series dimmers are not recommended for use with wire wound transformers, fans or motors.