Mainrange of product Harmony Control Relays product or component type Frequency control relay relay type Frequency control relays relay name RM35HZ21FM relay monitored parameters Overfrequency and underfrequency 50 or 60 Hz time delay type Adjustable 0.1...10 s, +/- 10 % on crossing the threshold switching capacity in VA 1250 VA minimum switching current 10 mA at 5 V DC maximum power consumption in VA 6 VA AC measurement range 40...70 Hz frequency utilisation category AC-12 conforming to IEC 60947-5-1 AC-13 conforming to IEC 60947-5-1 AC-14 conforming to IEC 60947-5-1 AC-15 conforming to IEC 60947-5-1 DC-12 conforming to IEC 60947-5-1 DC-13 conforming to IEC 60947-5-1 DC-14 conforming to IEC 60947-5-1