MB205N 454631/1/MA NSF (CONTROLS), MB205N 454631/1/MA Datasheet

WAFER, MA, 2POLE, 5 POS

MB205N 454631/1/MA

Manufacturer Part Number
MB205N 454631/1/MA
Description
WAFER, MA, 2POLE, 5 POS
Manufacturer
NSF (CONTROLS)
Datasheet

Specifications of MB205N 454631/1/MA

No. Of Poles
2
No. Of Positions
5
Svhc
No SVHC (15-Dec-2010)
Contact Current @ Contact Voltage Ac Max
500mA
Contact Current Ac Max
2A
Contact Current Dc Max
2A
Contact
RoHS Compliant
For Use With
Rotary Switches
NSF Controls Limited Keighley West Yorkshire BD21 5EF
General Information
Characteristics.
Index Mechanism.
Contacts &
Termination’s.
Rotor Blades.
Insulation.
Finish.
Mounting Details.
Maximum Switching
Per Wafer
The Type MU mechanism provides indexing angles of 30°, 36°, 45° and 60°,
Light 7 to 18 x 10-
High
Electrical, Maximum working voltage,
Contact rating, Current carrying
Current breaking with a resistive/non-reactive load.
Proof Voltage.
Insulation resistance.
Contact resistance (initial).
Mechanical.
End stop strength.
28 to 56 x 10-
No. of Poles. 36° MU-MA (b) 30° MU-MA (a) 45° MU-MA (c) 60° MU-MA (d)
These versatile miniature switches have 25.4 mm diameter moulded wafers and are available in
2 versions, 36° indexing - having 18 clip positions and 30° indexing - having 22 such positions. 15°, 45°
and 60° indexing are variations of the latter.Optional features include concentric shafts, panel and
spindle seals, printed circuit termination’s and momentary contact models.
(see Bulletin RW36 for full technical details).
The low friction moulded cam followers in the assembly ensures a smooth indexing action.
Balance pressure springs provide consistent and readily reproducible total switch torque values
within the following ranges.
Type A indexing mechanism may also be used as an alternative where a simpler, space saving
mechanism is required. The switch then becomes model A-MA. 30° indexing only.
Standard.
Alternatives. - Hard gold plated or silver contacts are available at extra cost as are contacts with
gold flash.
Termination’s. - Forward, standard: Straight, alternative.
Standard.
Alternative.
Stator.
Rotor.
Index Springs, Stainless steel: other metal parts, passivated zinc plated. Finishes to order.
Imperial (standard).
Bush 3/8” x 32TPI (Whit.)
Shaft 0.25” dia.
Nut 0.525” A/F.
1 Pole.
2 Pole.
3 Pole.
4 Pole.
5 Pole.
6 Pole.
7 Pole.
2
2
Nm(10 to 26 oz, ins,)
Nm (40 to 80 oz, ins,)
10 Positions.
2 to 10 ways
- Shorting. (make before break. MBB.)
- Non-shorting. (break before make. BBM.)
-
-
2 to 5 ways
2 to 4 ways
2 or 3 ways
Rotary Wafer Switches - Model MU-MA
-
-
-
Temperature range.
Silver plated brass.
Moulded glass fibre loaded diallylphthalate (DAP)
Polycarbonate.
Engineering Bulletin No RW25
(+44(0) 1535 661144
2 to 12 ways
2 ways only
2 ways only
2 to 7 ways
2 to 5 ways
2 to 4 ways
2 to 3 ways
300Vdc/ac (rms).
2amp continuous.
150mA at 250Vac (rms)..
1000Vrms at sea level.
Not less than 500 megohms at 500Vdc.
(between any 2 parts requiring electrical insulation)
10 milliohms maximum at 100mV (rms). 100mA.max.
0,8 ± 0,1 Nm (114oz.in.)
Medium
positions 3, 5,
Metric (alternative)
M10 x 0.75.
6mm, dia.
14mm A/F.
(fixed stop at
and 7 ways)
2 to 8 ways
Fax: +44(0) 1535 661474
14 to 32 x 10-
12 Positions.
2
Nm (20 to 46 oz, ins,)
2 ways only
2 to 6 ways
2 to 6 ways
2 or 3 ways
2 or 3 ways
-40°C. to +100°C.
on-off
-
Email:
providing 1 pole
15° MU-MG
switching.
2 wafers
24 way

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MB205N 454631/1/MA Summary of contents

Page 1

... General Information These versatile miniature switches have 25.4 mm diameter moulded wafers and are available in 2 versions, 36° indexing - having 18 clip positions and 30° indexing - having 22 such positions. 15°, 45° and 60° indexing are variations of the latter.Optional features include concentric shafts, panel and spindle seals, printed circuit termination’ ...

Page 2

RW25 MU-MA Variations. 1. Biased indexing is available giving momentary contact on positions and well as 3 position biased to centre. 2. Concentric shafts ...

Page 3

... Shaft and index wheel, Adjustable stop plate and Index housing :- Glass Filled Nylon. Plunger :- Index springs :- Torque :- Life :- Stops :- Struts :- Shaft :- Maximum number of wafers per switch :- 3 (depending on total number of poles perswitch). Maximum number of poles per switch :- Special switching requirements will be considered on request. Sealing :- Maximum Switching. No. of Poles. 30° Index.MA 1 Pole. ...

Page 4

RW44 Key To Details A. Diameter of mechanism ;- 25,4mm B. Strut centres ;- 20,6mm C. Front shaft ;- 48,6mm maximum D. Rear shaft ;-28,9mm E. Mounting face to first wafer ;- MA model 6,3mm PCA model and A models ...

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