Eaton / Cutler Hammer
Products

 		Reversing Drum Switches
Manual Motor Control Switches & Rotary Disconnect Switches

Application Description

These drum switches are designed primarily for use with single-phase and squirrel cage, single-speed reversible motors which may be connected directly across-the-line. Typical applications would be hoists and machine tools.

 

Features

  • Compact size

  • Front mounting — easily installed

  • Terminals front accessible — slanted 45° for extra convenience

  • Captive pressure clamps on terminal screws back off with screw — no prying with screwdriver necessary

    • Choice of operators

    • Lever --Flush or Surface Mount

    • Knob -- Flush or Surface Mount

    • Orientation of operator independent of legend — 360° positioning in 22-1/2° increments — pointer remains oriented to legend

    • Field convertible from maintained to momentary operation

    • Replaceable, large volume, silver plated contacts

    • Oiltight machine cavity or surface mounting types

    • Modern attractive appearance

Operation

All of the operators may be rotated 360° in 22-1/2° increments without losing the indication of the drum position. A red-lined pointer is permanently orientated to the legend markings and clearly indicates the selected drum function regardless of the selected setting for the operator. This enables the user to "offset" the operator to afford the most comfortable operating position. This is accomplished simply by loosening and retightening one screw.

 

Product Selection
Reversing Drum Type without Overload Relay
Maximum Horsepower Size Type of
Operation		 Surface Mounting
General Purpose — NEMA 1		 Flush or Cavity Mounting
(Oiltight Mounting
on Sizes DB and DD)
3-Phase Single-
Phase		 DC Lever
Operator		 Knob Lever
Operator		 Knob
200 – 230V 380 – 575V 115V 230V 115V 230V Catalog Number Catalog Number
3-Pole
2 2 1-1/2 2 1 1 DB 1 Maintained 1 9441H268 9441H269 9441H274 9441H275
Maintained and Momentary 2 9441H271 9441H272 9441H276 9441H277
3 5 1-1/2 2 1 1 DB 2 Maintained 1 9441H353 9441H354 9441H347 9441H348
Maintained and Momentary 2 9441H356 9441H357 9441H349 9441H350
5 7-1/2 1-1/2 3 2 3 DD 1 Maintained 1 9441H284 9441H285 9441H388 9441H287
7-1/2 10 2 5 2 3 DD 2 Maintained 1 9441H361 9441H363 9441H362 9441H364

1 These devices are field convertible from maintained both positions to momentary both positions.
2 These devices are field convertible from maintained FORWARD and momentary REVERSE to momentary FORWARD and maintained REVERSE.

Dimensions  (Approximate Dimensions and Shipping Weights)
Size Type of
Operator		 Dimensions in Inches (mm) Shipping
Weights
Lbs. (kg)
Wide
A		 High
B		 Deep
C		 Mounting Lever
F
D E
Surface Mounting
DB1 & Lever 2.50 (63.5) 5.88 (149.4) 4.38 (111.3) 2.00 (50.8) 2.25 (57.2) 1.88 (47.8) 3.0 (1.4)
DB2 Knob 2.50 (63.5) 5.38 (136.7) 3.00 (76.2) 2.00 (50.8) 2.25 (57.2) 1.38 (35.1) 3.0 (1.4)
DD1 & Lever 3.38 (85.9) 6.88 (174.8) 4.75 (120.7) 2.63 (66.8) 2.75 (69.9) 2.00 (50.8) 4.0 (1.8)
DD2 Knob 3.38 (85.9) 6.25 (158.8) 3.63 (92.2) 2.63 (66.8) 2.75 (69.9) 1.38 (35.1) 4.0 (1.8)
Cavity Mounting
DB1 & Lever 4.00 (101.6) 4.75 (120.7) 5.00 (127.0) 3.50 (88.9) 4.00 (101.6) 1.88 (47.8) 3.0 (1.4)
DB2 Knob 4.00 (101.6) 4.50 (114.3) 4.50 (114.3) 3.50 (88.9) 4.00 (101.6) 1.38 (35.1) 3.0 (1.4)
DD1 & Lever 4.50 (114.3) 5.75 (146.1) 5.25 (133.4) 4.00 (101.6) 4.50 (114.3) 2.00 (50.8) 4.0 (1.8)
DD2 Knob 4.50 (114.3) 5.13 (130.3) 4.63 (117.6) 4.00 (101.6) 4.50 (114.3) 1.38 (35.1) 4.0 (1.8)

Contact Pacific Parts for replacement switches or to cross over your current switches