JR Merritt

DC Master Switch

NSO-1 Rotary Switch

NSO-1 Rotary DC Switches are characterized by their rugged construction and unmatched versatility.

Overview

• Rugged construction with brass bearings and square steel operating shaft.

• High design flexibility with combination of custom programmable contacts, detents, spring return, potentiometers and electronics.

• Precise step control with up to 7-0-7.

Output Options
  • • DC Contacts

  • • Potentiometer

  • • Encoder

  • • 4-20mA

  • • Transformer

Switch Action
  • • Spring Return

  • • Maintained

  • • Friction Brake

Mounting Style
  • • Panel (From Below)

Compatible Handles
  • • Tear Drop

  • • Pistol Grip

  • • Ball

Compatible Handles

Applications

The NSO-0 provides directional, precise proportional speed and step control of DC drives. Typical applications include:

• In-plant process control

• Mining vehicles

• Conveyor and lift systems

• Steel & aluminum rolling mills

• And more

Specifications

General Data

Output Options

DC Contacts, Potentiometer, Encoder, 4-20mA & Transformer

Handle Action

Spring Return, Friction Brake or Maintained

Handle Travel

0 - 270 degrees with directly coupled potentiometer

Max of Steps

Up to 2-12 positions

Handle Compatibility

Teardrop, pistol grip & chrome steel ball lever

Life

10 million cycles

Materials

Aluminum body and nickel chronium yoke. 

Est. Shipping Weight

4 lbs.

Est. Shipping Dimensions

10 in. x 10 in. x 10 in.

Mounting Data

Mounting Style

Panel (from below)

Mounting Footprint

2.84" x 2.84"
 See literature for additional mounting specifications

Environmental Data

IP Rating

Up to IP66 / Nema 4x (with cast enclosure & round nameplate)

Operating Temperature

-13 to +158 degrees F [-25 to +70 degrees C]

Storage Temperature

-40 to +158 degrees F [-40 to +70 degrees C]

Electrical Data

Contact Specifications

Switch Type: 
1 N.O. and 1 N.C. double break nickel silver alloy contacts with non-teasable snap action mechanism
 
 Max. Number:
 Up to 6 contact blocks (12 circuits)
 
 Rating (DC w/ magnetic blow out):
 10 amps @ 24VDC
 6 amps @ 48 VDC
 1.0 amps @ 125 VDC
 0.6 amps @ 250 VDC
 
 Termination: 
 Saddle Clamp
 
 Max. Wire Size: 
 12 AWG

Additional Specifications

Reference product literature for additional specifications.

Technical Drawings

Dimensional

Mounting

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