answered on 14/12/2015 :
You are in the right area, as both these TRMS clamp multimeters measure AC currents and offer the same functions as the F11N and F13N models.
The final choice will depend mainly on the maximum currents to be measured. The instruments you own measured up to 700 A with a clamping diameter of 42 mm.
The F201 clamp measures up to 600 A with a clamping diameter of 34 mm, whereas the F401 model measures up to 1,000 A on cross-sections of up to 48 mm.
In addition, compared with the CAT III 600V rating of the F11N/F13N, both of these models allow you to extend the scope of your work: up to CAT IV 600V installations with the F201 and up to CAT IV 1000V installations with the F401.
