Purdy B-Series User Manual

Interswitch Thumbwheel Switches

B Series

FEATURES

• Compact design, substantial space saving

• Simple assembly

• CE approved types

The essential features of the thumbwheel switch
are its high reliability, precision and contact en­durance.

Interswitch thumbwheel switches are used in
machine tool control systems, measurement and
test units, control and regulation systems, com­puter systems, sound and vision control systems,
telecommunications, medical measurement sys­tems, etc.

SPECIFICATIONS

Rates current (resistive load) 1-100 mA AC/DC

Max. current carrying capacity 1 A AC/DC

Max. working voltage max. 42 V AC/DC

Test voltage 500 V DC

Insulation resistance (+20°C)

10

5

MOhm

Contact resistance (ind. PCB) 100 MOhm

Servicelife (switch operations)

min. 10

5

Permissible ambient temp. -25° ... +70°C

10 positions Yes Direct solder connections Yes

16 positions Yes Edge connections Yes

Decimal Yes Solder pins Yes

Binary Yes Wire wrap pins Yes

Binary + Complement Yes Front mounting Yes

PCB for diode mounting Yes Ganged switches Yes

Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085

1 Tel: [phone] • Fax: [phone] • [e-mail] • www.purdyelectronics.com

4/3/05

Interswitch Thumbwheel Switches – B Series

Dimensions

Width in mm 12.5

Height in mm 58

Mounting depth in mm min. 57.1

Character height in mm 4

Front View

Panel Cut-Out

Top View

n= Number of modules without end brackets
(1 pair of division plates 1 element)

PCB Design

Side View

Division Plates and End Brackets

2 Tel: [phone] • Fax: [phone] • [e-mail] • www.purdyelectronics.com

Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085

4/3/05