30.5 mm Control Units

30.5 mm
CONTROL UNITS

	DEFINITION
	These switches are mechanical devices used to make and/or break one or more electrical circuits. They are single hole mounted devices designed to be solely operated by human hands.
	SELECTION / OPERATION
	The selection and use of a switch involves knowing the details of the particular installation. These control units are offered as pushbutton operators (4 styles), two, three, and four postion selector operators (3 styles each), push-pull units (4 styles), an illuminated pushbutton and a variety of lockable devices. These devices will meet NEMA 12/13 requirements when properly installed in an appropriate enclosure. Each style of pushbutton operators come in a variety of colors. The selector switch styles are knob, wing lever and key operated. There are a number or different cams available to customize any installation. The seven stardard contact blocks are modular in design and almost any combination is possible up to the recommended limit of three tiers or blocks on any operator. This recommendation is made to reduce the effects of standard tolerance deviation and ensure the devices will not produce intermittent operations. Also included in this section are pilot lights, lenses, and legend plates. The pilot lights are offered in two mounting configurations, 30.5mm and 18.0mm. The inputs to the lights range from 12vDC to 120vAC. Also, many of the pilot lights have built in transformers and/or miniature relays to provide any circuit compatibility.

INSTALLATION

Every installation is unique and specific instructions for installation and ordering can be found on page 57. Above all, observe all SAFETY REQUIREMENTS, PROCEDURES and LOCAL CODES. Only qualified electrical technicians should be allowed to perform an installation or replacement. On pages 50 through 61 you will find many different items that should satisfy any installation requirements. At the end of this section you can find a number of accessory items to facilitate in the installation of these devices. All mechanical devices, these units included, will wear out and eventually need to be replaced. The estimated minimum mechanical life is 1,000,000 operations. Regular scheduled Preventative Maintenance inspections are strongly recommended. Some conditions to look for are:

Physical damage to the device.
Loose connections or components.
Broken or weak springs.

REES switches are designed and manufactured to surpass the standards of industry. On the facing page is a brief look at some of these regulations. The testing done by independent facilities is the minimum requirement that the REES switches far exceed. If other assistance is desired please contact the factory.

Index

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