... mean load during a period of 8,15 or 30min,with red maximum pointer. Resetting knob of maximum pointer can be protected ... loss of accuracy or damaging the meter .Mounting:flush mounting with bracketStandards:IEC51, IEC61010-1, VDE410, BS89, UL94, NE60051, DIN43780Cases: ... proof.All cases are made of strengthened self-extingushing PPO With a high hit-resistance and a maximum electric isolationAll ...