M-Force Three-Phase Switch


Eaton's Cooper Power series M-Force switch is a distribution-class, gang operated, three-phase overhead loadbreak switch. The M-Force switch is offered in distribution voltage classifications of 15 kV, 25 kV, and 35 kV. The M-Force switch may be used for line sectionalizing, paralleling, by-passing, or isolating. M-Force stands for "Magnetic force".

Eaton has the only reverse loop contacts found on distribution-class loadbreak switches; a contact usually reserved for higher priced transmission switches. The reverse loop contacts utilize high current magnetic forces for added reliability. The reverse loop design allows for high contact pressure to be maintained during fault conditions. This feature prevents pitting and distorting of the switch blade and contacts even under severe momentary overload.

Catalog Number MX-----
Additional Information Technical Specifications, see Catalog CA008004EN
Voltage Class 15 kV, 25 kV, 35 kV


  • Reverse loop contacts for added reliability
  • Standard 2.25" bolt circle polymer insulators offer exceptional dielectric, hydrophobic, and mechanical characteristics
    • 3.00" bolt circle porcelain insulators are standard at 35 kV
  • Extended bearing assembly ensures proper blade/contact alignment
  • The Reliabreak Pick-up Arm is insulated on one side, which isolates the interrupter from the current path during a close operation
  • Positive Locking Dead-End Brackets for dead-ending at an angle without any distrotion of the brackets
  • Inter-phase control rod clamps are designed with a jam nut through the side of the casting eliminates any possibility of accidental slippage of the control mechanism
  • Optional ice shields make the M-Force switch capable of opening and closing with a 3/4" ice build up

Related Products and Accessories

Document Number Title
CA008004EN/Old 326-10 M-Force Three-Phase Switch
MN008003EN Manually Operated M-Force Switch Installation and Operation Instructions
PA008011EN The M-Force Three-Phase Switch is Robust, Reliable and Easy to Use Product Aid
PS008002EN M-Force Three-Phase Switch Product Specification
CT008001EN Sidebuster Type M-Force Sidebreak Switch Certified Test Report (Replaces KCP-0001)