Motor Circuit Fuses – MV HV Fuses 3.6kV-12kV Motor Circuits IEC ABB CMF

Motor Circuit Fuses - MV HV Fuses 3.6kV-12kV Motor Circuits IEC ABB CMF

Motor Circuit Fuses – MV HV Fuses 3.6kV-12kV Motor Circuits IEC ABB CMF

ABB CMF motor circuit fuses can be used for medium voltage (MV) contactors and switch disconnectors which are used to control and protect AC motor circuits, 3.6-12kV, 63-315A.

Fuses suitable for 3.6kV (3.3kV) up to 11/12kV motor circuit applications in accordance with specification IEC60282-1 (IEC 282-1) and IEC60644 (IEC 644) and the dimensions are in accordance with DIN 43625 and IEC 60282-1.

  • IEC 60644: High-voltage fuses used in motor circuits must be able to withstand, without deterioration, the repeated surges associated with motor starting.

Although MV-HV motor fuses are normally run at a stationary current, which is much lower than the fuse rated current, the low-loss characteristics of the ABB CMF fuses make them especially suitable in compact contactor compartments.

ABB CMF Motor circuit Fuses

Features & Benefits

  • Fuses specially designed for medium/high voltage motor circuit protection
  • Tested according to IEC 60644 which guarantees excellent ability to withstand repeated motor starting conditions
  • High current rating within single body dimensions
  • Low minimum breaking current
  • Low power losses, specially suitable in compact contactor compartments
  • High breaking capacity MV-HV fuses
  • Available with BS tags
  • High current limitation
  • Versions CMF-TCU equipped with Temperature Control Unit, which protects against high temperature in enclosed compartments
  • Equipped with medium type striker, which is activated immediately when the fuse-elements melt
  • Type tested acc. to IEC 60282-1 and IEC 60644
  • Dimensions acc. to IEC 60282-1 and DIN 43625
  • Also: MV HV Surge Arresters 11kV 33kV

ABB CMF Fuses – Fuse Ratings & Dimensions

Rated Voltage Un (kV) Rated Current ln (A) Fuse Length e (mm) Fuse Diameter D (mm) K-Factor According to IEC 60644 Maximum Tested Breaking Current l1 (kA) Minimum Breaking Current l3 (A) Fuse Resistance at 20ºC R0 (mΩ) Power Loss At Rated Current (Pn)
3.6kV 100A 292mm 65mm 0.75 50kA 275A 3.20mΩ 49W
160A 292mm 65mm 0.7 50kA 400A 1.92mΩ 75W
200A 292mm 87mm 0.7 50kA 500A 1.40mΩ 75W
250A 292mm 87mm 0.6 50kA 760A 0.97mΩ 90W
315RC280A 292mm 87mm 0.6 50kA 900A 0.81mΩ 122W
7.2kV 63A 442mm 65mm 0.75 50kA 175A 8.50mΩ 45W
100A 442mm 65mm 0.75 50kA 275A 4.86mΩ 67W
160A 442mm 65mm 0.7 50kA 400A 2.92mΩ 119W
200A 442mm 87mm 0.7 50kA 500A 2.12mΩ 118W
250A 442mm 87mm 0.6 50kA 800A 1.48mΩ 142W
315RC280A 442mm 87mm 0.6 50kA 950A 1.23mΩ 193W
3.6kV 63A 442mm 65mm 0.75 50kA 190A 13.52mΩ 77W
100A 442mm 87mm 0.75 50kA 275A 6.62mΩ 103W
160A 442mm 87mm 0.7 50kA 480A 3.98mΩ 155W
200A 442mm 87mm 0.7 50kA 560A 2.73mΩ 173W


Motor Circuit Fuses - MV HV Fuses 3.6kV-12kV Motor Circuits IEC ABB CMF - Dimensions

ABB CMF Motor Circuit Fuses – Dimensions

MV HV Transformer Switchgear Cable Connectors & Terminations

Thorne & Derrick also distribute an extensive range of MV-HV Joints, Connectors & Terminations for installing medium/high voltage power cables onto gas insulated switchgear networks up to 33kV – this includes outer cone (Nexans Euromold) and inner cone (Pfisterer CONNEX) type cable plug and connectors. MV-HV fuses are available for transformer, switchgear, motor circuit and capacitor protection.

Cable Connectors Terminations

ABB – GIS Gas Insulated Switchgear For MV HV Medium/High Voltage Power Systems, 11kV/33kV & EHV