Product Description

Class A201 Contactors, Sizes 00-4; Three-Phase, 1-1/2-100 hp

A201 Magnetic Contactors from Eaton's electrical sector are 600V rated devices available in NEMA Sizes 00-4, 10A through 150A (open rating). Product features include:

• Straight-through wiring to line and load terminals located up front for ease of installation

• Moving and stationary contacts are front accessible, simplifying inspection and maintenance

• Relaible U-shaped magnet for reduced power consumption

• Coil design reduces inventory/maintenance expenses. For a given voltage, one size coil fits all contactors Sizes 00-2, and a second coil fits three-pole Model J Sizes 3 and 4. Model K coils are different design

A201 contactors have normally open holding circuit interlocks which are supplied as standard.

Panel layout and drilling are simplified through the use of common backplates, one for Sizes 00-2 and one for Sizes 3-4. In addition, panel space is reduced dramatically through the use of unique corner cavities for mounting the wide variety of modifications shown on page 323.

For reversing applications, two contactors are supplied on a common base with electrical and mechanical interlocks which prevent both contactors from being closed at the same time.

Class A201 Contactors, Sizes 5-9; Three-Phase, Over 100 hp

These AC magnetic contactors utilize clapper design and feature straight-through wiring.

Contacts are silver alloy for longer life. the contacts close with optimum wiping action which serves to keep the contacting surfaces clean. De-ion® arc quenchers draw the arc away from the contacts at opening, which reduces burning and pitting and increases contact life.

All of the contactors are complete with one unwired, normally-open (NO) auxiliary contact mounted and have accommodations for additional auxiliary contacts. No control circuit wiring or terminal markings are included.

Size 5, 300A, 600V, Open

Size 6, 600A, 600V, Open

Class A201 Size 5 and 6 contactors are front clapper design, AC operated with the armature pivoting on dual needle bearings which assure accurate contact alignment.

The contactor base is molded of a high impact, non-tracking, non-hygroscopic glass polyester material permitting front mounting and wiring on a steel panel.

Floating magnet assures quite operation.

Size 5 and 6 contactors must be mounted with the line terminals directly above the load terminals.

Multi-voltage coil ratings allow selection of the voltage which closely matches the actual system voltage to assure optimum contactor operation.

Each contactor accommodates two Type J11 auxiliary contacts, providing up to to four auxiliary circuits, normally-open or normally-closed (NO and NC).

A201 Size 5 and 6 contactors and starters are UL recognized when supplied without terminals. When supplied with terminals, the devices are UL listed.

Two special configurations of the Class A201 Size 5 and 6 contactors are available:

• Latched Design--

This is a mechanically held, electrically released device. It is applied where the contactor must remain closed during extreme voltage fluctuations or power failure. It is also suitable for applications requiring quiet operation since the operating coil is de-energized when the contactor is closed. The latch assembly consists of a mechanical latch mechanism, electrically operated AC trip solenoid and a clearing contact

• DC Operated--

This device is DC operated. It is used where low dropout voltage or exceptionally quiet operation is desired. The DC assembly consists of a DC operating coil, integrally mounted rectifier and shorting contact

Product Description

Non-Reversing
Three-phase, full voltage magnetic starters are most commonly used to switch AC motor loads. Starters consist of a magnetically actuated switch (contactor) and an overload relay assembled together.

Reversing

Three-phase, full voltage magnetic starters are used primarily for reversing of three-phase squirrel cage motors. They consist of two contactors and a single overload relay assembled together. The contactors are mechanically and electrically interlocked to prevent line shorts and energization of both contactors simultaneously.

Features, Benefits and Functions

• Bimetallic ambient compensated overload relays--available in three basic sizes covering applications up to 900hp--reducing number of different contactor/overload relay combinations that have to be stocked. These overload relays feature:

  • Selectable manual or automatic reset operation

  • Interchangeable heater packs adjustable ±24% to match motor FLA and calibrated for 1.0 and 1.15 service factors. Heater packs for smaller overload relay will mount in larger overload relay--useful in derating applications such as jogging.

  • Load lugs built into relay base

  • Single-phase protection, Class 20 or Class 10 trip time

  • Overload trip indication

  • Electrically isolated NO-NC contacts (pull RESET button to test)

• The C440 is a self-powered, robust electronic overload designed for integrated use with Freedom NEMA contactors

  • Tiered feature set to provide coverage specific to your application

  • Broad 5: 1 FLA range for maximum flexibility

  • Coverage from 0.05-1500A to meet all your needs.

• Long life twin break, silver cadmium oxide contacts--provide excellent conductivity and superior resistance to welding and arc erosion. Generously sized for low resistance and cool operation

• Designed to 3,000,000 electrical operations at maximum hp ratings up through 25 hp at 600V

• Steel mounting plate standard on all open type starters

• Wired for separate or common control

Non-Reversing

• Holding circuit contact(s) supplied as standard:

  • Sizes 00-3 have a NO auxiliary contact block mounted on right-hand side (on size 00, contact occupies 4th power pole position--no increase in width)

  • Sizes 4-5 have a NO contact block mounted on left side.

  • Sizes 6-7 have a 2NO/2NC contact block on top left

  • Size 8 has a NO/NC contact block on top left back and a NO on top right back

Reversing

• Each contactor (Size 00-8) supplied with one NO-NC side mounted contact block as standard. NC contacts are wired as electrical interlocks

Starters--Non-Reversing and Reversing

Product Description

NEMA Sizes 00-4; Three-Phase, 1-1/2-100 hp

These Starters from Eaton's electrical sector use Class A201 contactors as described on Page 304. Contactor features are enhanced through the ability to provide positive motor protection in the form of several types of overload relays. See Pages 331-343.

Type B Overload Relay, Manual Reset Only

Supplied as standard on Class A200 and A900 starters (two-speed). The bi-metallic overload relay offers ambient compensation and trip-to-test feature (relay contact status check) as standard. In addition, an isolated normally-open contact is available in kit form for customer mounting. Type B overload relays are manual reset only.

TType A Overload Relay, Manual or Automatic Reset

This is an optional overload relay, offering the capability of field conversion to automatic reset. It is available as an ambient compensated or non-compensated type.

Non-Reversing Starters

Non-reversing starters are supplied as open devices. All starters are supplied with a normally-open holding circuit interlock.

Reversing Starters

For reversing applications (Class A210), a starter and a contactor electrically and mechanically interlocked are supplied on a common baseplate. Reversing starters are used to start, stop and reverse AC squirrel cage motors and for primary control of reversing wound-rotor motors.

FFor plugging or inching, when operations exceed five times per minute, decreased horsepower rating in accordance with NEMA Standard ICS 2-321 are recommended.

Two-Speed Starters, A900s

For across-the-line starting of two-speed constant hp, constant torque and variable torquesquirrel cage motors, two-speed starters (Class A900) are available. These starters consist of two starters, one for each motor speed, mechanically and electrically interlocked and wired for manual speed selection by means of pushbuttons. Auxiliary relays may be added to provide automatic acceleration or deceleration.

Starters for two-speed, two independent winding motors consist of two-, three-, or four-pole starters electrically and mechanically interlocked.

Starters for two-speed, single reconnectable winding motors consist of one three-pole and one five-pole starter mechanically and electrically interlocked.

NEMA SIzes 5-9; Three-Phase 75 to 1600 hp

Non-reversing (Class A200), and reversing (Classes A210, A250) full voltage starters are used for across-the-line starting of squirrel cage induction motors. They are used with motors rated above 50hp at 230V, and above 100hp at 460 through 600V.

Sizes 5 and 6 starters use Class A201 contactors as described on Page 304. In addition to standard motor starters, special application devices are available: Sizes 5 and 6 starters with integrally rectified AC to DC coils for applications where low voltage problems are prevalent are available.

Front Removable Parts--

All operating Parts can be removed quickly and easily from the front. Straight-through wiring and conveniently located connection points for external wires and cables minimize installation time.

Type B Block Type Thermal Overload Relay--

Dependable overload protection is assured by these snap-action, manual reset relays. Automatic reset Type A relays are available as an option.