Super-Miniature Rotary Switches

■Features

1. High contact reliability assured (Twin contact type)

2. Selection of various circuits is Åexible.

3. Fully-sealed structure protects the contacts from

environmental contamination.

4. Immersion cleaning is possible.

5. Best suited for use in dry circuit since the contacts

and terminals are gold-plated.

RoHS Compliant

■Part Numbering

■ SpeciÄcations

Rating

0.4VA max.

（12VDC max.）

Initial contact resistance 200m

Ω max.

（1,5mA 200μVAC）

Dielectric strength

250VAC 1 minute

Insulation resistance

100M

Ω min.

（100VDC）

Electrical life

10,000 cycles

Operating force

1.96

∼5.88N・cm

Operating

temperature range

−20∼＋70℃

Storage

temperature range

−40∼＋85℃

Washable

MRB

 1 −  3 − Z

Series code

Number of poles

Number of position

（Top view）

★MRB1−3−Z1−pole 3−position

Terminal numbers are not shown on the switch.

The shaft fully rotates 360 degrees. In the shaft

positions other than I, II and III, the contacts is in

the OFF state.

Switching function

Circuit arrangement

Circuit

diagram

Position I

Position II Position III

ON

ON

ON

C

−1C−2C−3

★：Made to order products.