Enclosed Control

The XT Line from Eaton's electrical business includes IEC Contactors, Starters and Combination Motor Controllers (CMCs). Designed to meet international standards, the enclosed control XT Line (ECX), carries the CSA certification to support the IEC market. Eaton provides XT starters and contactors with and without main disconnect devices, combination and non-combination respectively, with a variety of modifications available. Additional available options include control power transformers, pushbuttons, pilot lights and selector switches.

The space saving and easy-to-install XT line of IEC contactors and starters is an effective solution for customer applications from 7-1600A with either XT-bimetallic, or C396 Solid State Overloads. The enclosed units are available in a variety of control system and service voltages up to 600Vac for non-reversing, reversing and multi-speed applications. The fusible combination units offer fusible disconnects up to 600A (consult factory for higher values) and HMCP breakers up to 800A (consult factory for higher values).

For your DC applications the XT product can benefit you with reduced sealing power consumption for DC contactors due to an electronic coil controller that uses less power. XT contactors reduce power consumption and generate less heat. This results in lower cooling requirements, the ability to mount more contactors/starters per cabinet and extend life on pilot devices that carry control signals (pushbuttons, relays, PLC outputs, etc.).

The XT IEC are globally rated contactors, starters, overload relays, manual motor protectors and combination motor controllers with available NEMA 1, 3R, 12, 4, 4X and 7/9 rated enclosures. Combination units are available up to 75hp @ 600Vac in IP 23, 32, 65 and 66 (NEMA 1, 3R, 12 and 4) with our rotary style disconnect handles and 22 mm pilot devices. NEMA 4X and higher horsepower rated units utilize flange mounted disconnect handles and our 10250T 30mm devices. Brief descriptions of the various types of enclosures are provided below.

NEMA Type 1 (Conforms to IP40)- for indoor use suitable for most applications where unusual service conditions do not exist and where a measure of protection from accidental contact with enclosed equipment is required. Designed to meet tests for rod entry and rust resistance. Enclosure is sheet steel, treated to resist corrosion. Depending on the size, knock-outs are provided on the top, bottom and sometimes on the side.

NEMA Type 3R (Conforms to IP52)- for outdoor use primarily intended for applications where falling rain, sleet or external ice formations are present. Gasketed cover designed to meet tests for rain, rod entry, external icing and rust resistance. Enclosure is sheet steel, treated to resist corrosion. Depending on the size, a blank cover plate is attached to the top (for a conduit hub) and knockouts are provided on the bottom. Cover-mounted pilot device holes are provided and come with hole-plug covers.

NEMA Type 4 (Conforms to IP65)- for indoor or outdoor use provide measure of protection from splashing water, hose-directed water and wind blown dust or rain. Constructed of sheet steel with gasketed cover. Designed to meet tests for hose-down, external icing and corrosion protection. Enclosure has two water- tight hubs (power) installed top and bottom of one control hub installed in bottom - depending on size. Cover-mounted pilot device holes are provided and covered with hole-plugs.

NEMA Type 4X (Conforms to IP65)- for indoor or outdoor use provide measure of protection from splashing water, hose-directed water, wind blown dust, rain and corrosion. Constructed of stainless steel with gasketed cover. Designed to meet same tests, as Type 4 except enclosure must pass a 200-hour salt spray corrosion resistance test.

NEMA Type 7- for hazardous gas locations for use in Class I, Group C or D indoor locations as defined in the National Electrical Code. NEMA Type 7 enclosures must withstand the pressure generated by explosion of internally trapped gases and be able to contain the explosion so that gases in the surrounding atmosphere are not ignited. Under normal operation, the surface temperature of the enclosure must be below the point where it could ignite explosive gases present in the surrounding atmosphere. Designed to meet explosion, temperature and hydrostatic design tests.

NEMA Type 9- for hazardous dust locations for use in Class II, Group E, F or G indoor locations as defined in the National Electrical Code. Heat generating devices within the enclosure are designed to maintain the surface temperature of the enclosure below a point where it could ignite the dust-air mixture in the surrounding atmosphere or cause discoloration of surface dust. These enclosures are designed to meet tests for dust penetration, temperature and aging of gasket (if used).

NEMA Type 12 (Conforms to IP62)- for indoor use provides a degree of protection from dripping liquids (non-corrosive), falling dirt and dust. Designed to meet tests for drip, dust and rust resistance. Constructed of sheet steel. Hole plugs cover pilot device holes. There are no knockouts, hub cover plates or hubs installed. Many Eaton NEMA Type 12 enclosures are suitable for use in Class II, Division 2, Group G and Class III, Divisions 1 and 2 locations as defined in the National Electrical Code.