Omeg Rotary Switch Data

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OMEG ROTARY SWITCH DATA

This page provides the specification and switch terminal configuration for the Omeg Rotary Switch potentiometer; also the basic dimensions for the rotary switch module mounted on three different potentiometers.

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Basic Dimensions (typical examples)
Rotary Switch Specification
Switch Terminals
Switch Functions

BASIC DIMENSIONS

The following are provided as typical examples only. The specific dimensions can be found for each model from the relevant link on the Potentiometer Type page.
In the diagrams below the potentiometer terminals are marked A, S and E.

A = Initial termination
S = Wiper (or moving contact) termination
E = End termination

Rotary Switch with ECO Potentiometer

Rotary Switch with P16 Potentiometer

ECO 4A switch and P16 pot (PC16BU/B4OW2S)

Rotary Switch with P20 Potentiometer

ECO 4A switch and P20 pot (PC20BU/B4OW1S)

ROTARY SWITCH SPECIFICATION

The rotary switch module is Certified by UL International Demko A/S to EN61058-1 with Cenelec Certification Agreement (CCA) and the 1A contact rating is only available when mounted on the ECO potentiometer. NOTE This is a European and NOT an American certification.

Our Rotary Switch Certificate is here.

1A Contact Rating:

Note: The 1A contact rating is NOT available for mounting on the P16 or P20 potentiometer.

1A/250Vac 2.5A/12Vdc
Surge rating (0.01 seconds): 20A
Contact gap: 3mm (Full mains separation of contacts)

4A Contact Rating:

4A/250Vac 10A/12Vdc
Surge rating (0.01 seconds): 80A
Switch contacts: Silver tin oxide
Contact gap: 2mm (Micro disconnection of switch - micro separation of contacts)

COMMON features:

Housing material: Glass filled polyester (UL 94 VO)
Initial contact resistance: 20 milliohms
Insulation resistance: 50,000 Megohms
Life (operations at full load): 10,000 minimum
Operating temperature: -25°C to +70°C
Operating torque: 4.0 cN.m maximum
Mechanical rotation: 300°
Proof voltage: 3kV minimum

ROTARY SWITCH TERMINALS

Layout

eco rotary switch terminal layout Diagram as viewed on the rear of the switch module:
(Potentiometer terminals at the bottom)

Configuration

SPST - Single pole (1S), Single throw (On-Off)

DPST - Double pole (2S), Single throw (On-Off)

SPDT - Single pole (1S), Double throw (CH)
(NOT certified)

DPDT - Double pole (2S), Double throw (CH)
(NOT certified)

Notes

1. Moving contact(s) shown when the potentiometer shaft is in a counterclockwise (CCW) position.
2. 'Ordinary Wiring'(OW) or 'Printed Circuit'(PC) terminals can be requested on the switch.
3. Terminals 1 and 3 are only fitted for the Double Throw ('CH' or Changeover) versions which are NOT approved nor certified.

ROTARY SWITCH FUNCTIONS

Standard (1A or 4A contact ratings)
N/O normally OPEN Switch
Contacts normally OPEN;
CLOCKwise rotation to CLOSE contacts

Option 1 (4A contact rating only)
N/C normally CLOSED Switch
Contacts normally CLOSED;
CLOCKwise rotation to OPEN contacts

Option 2 (4A contact rating only)
REVERSED N/O normally OPEN Switch
Contacts normally OPEN at fully clockwise position;
ANTI-clockwise rotation to CLOSE contacts

Option 3 (4A contact rating only)
REVERSED N/C normally CLOSED Switch
Contacts normally CLOSED at fully clockwise position;
ANTI-clockwise rotation to OPEN contacts

This information is supplied in good faith but the customer is politely reminded that it is their responsibility to check the suitability of our products for their particular application, production techniques and processes. Please note that all dimensions are for reference purposes only and, as it is the Company's policy to continuously improve our products, we reserve the right to incorporate changes without notice.