Tab36.fm Page 1 Monday, September 22, 2008 7:39 AM Vacuum Contactors & Starters D-1 July 2008 Contents Description Page NEMA, Special Purpose and Mining Rating Product Family Overview . D-2 Product Selection . D-3 Accessories D-4 Wiring Diagrams . D-5 Technical Data and Specications D-6 Dimensions D-7 D Size 4 Vacuum Contactor CA08102002K For more information visit: www.EatonCanada.ca Vacuum Contactors & Starters Tab36.fm Page 2 Monday, September 22, 2008 7:39 AM Vacuum Contactors & Starters D-2 NEMA, Special Purpose and Mining Rating July 2008 Product Family Overview Typical applications include full Operation voltage control of three-phase squirrel cage motors, primary control of low The contact structure of the vacuum voltage wound rotor motors and break contactor is located inside circuit switching for low voltage capac- sealed ceramic tubes that have been itors for power factor improvement. evacuated of air. Any arc occurring across the contacts upon opening is A vacuum contactor is affected by automatically extinguished because atmospheric pressure on the bellows ionized air is not available to sustain it of the vacuum bottles. Up to an alti- the arc breaks when the current tude of 6600 feet, the contactor is passes through zero. The arc typically designed to tolerate normal variations does not service beyond the rst half in barometric pressure. If the contactor cycle once the contacts begin to sepa- D is to be operated above 6600 feet rate. The large arc chutes normally above sea level, consult your Eaton associated with contactors of this size representative. are not required. The ceramic tube with Size 4 Vacuum Contactor the moving and stationary contacts is called a vacuum interrupter or bottle. Features Product Description There is one bottle for each pole on the Rugged, compact and lightweight contactor. A metal bellows (like a Vacuum Contactors and Starters were small, circular accordion) within the Quiet operation designed for starting and controlling bottle allows the moving contact to be Electrical and mechanical interlocks three-phase, 50/60 Hz, AC motors. Each closed and pulled open from the out- available contact is enclosed in a vacuum bottle side without leaking air into the bottle. Long service life to reduce and contain contact arcing. Both the bellow and the metal-to- This design offers excellent perfor- ceramic seals of these state-of-the-art mance for plugging and jogging appli- bottles have been rened to the point Benets cations. where the possibility of loss of vac- Easy maintenance with front remov- uum has been virtually eliminated. able coil and auxiliaries Application Description Eliminate extra surge suppressors Standards and Certications The Vacuum Contactors and Starters with the standard low chop are offered in three classications. interrupters NEMA Devices They are NEMA rated devices up to Plan your preventative mainte- UL Listed File E1491, Guide 600V AC, Special Purpose rated nance schedule by utilizing the con- Number NLDX devices up to 1500V AC and Mining tact wear indicator, standard on all CSA Approved rated devices rated up to 1500V AC. vacuum bottles Each device is tested to different stan- Special Purpose Devices dards to serve their market. IEC 947-4-1 CE Approved EN 60947-4-1 UL Listed File E1491, Guide Number NLDX CSA Approved For more information visit: www.EatonCanada.ca CA08102002K