Product Features
First section is blank
Technical Specifications of NSN
Thread Class:
2a 1st mounting facility
Thread Class:
2b 2nd mounting facility
Hazardous Locations/environmental Protection:
Explosion proof
Overall Length:
4.000 inches
Overall Height:
4.125 inches
First Flat Length:
0.875 inches single actuator
Shaft Diameter:
0.375 inches single actuator
Individual Section Quantity:
4
Knob Manufacturer Code:
82121
Nonturn Device Type:
Slotted bushing at 3: 00 o'clock
Longest Horizontal Distance Between Mounting Centers:
2.281 inches 2nd mounting facility
Longest Vertical Distance Between Mounting Centers:
2.281 inches 2nd mounting facility
Switch Contact Basic Design:
Nonpile-up symmetrical
Pole Quantity:
1 2nd section front
Pole Quantity:
1 3rd section front
Pole Quantity:
1 4th section front
Throw Quantity:
2 2nd section rear
Throw Quantity:
2 3rd section rear
Throw Quantity:
2 4th section rear
Mounting Method:
Bracket 2nd mounting facility and threaded hole 2nd mounting facility
Mounting Method:
Threaded bushing w/panel seal 1st mounting facility
Features Provided:
Actuator knob
Thready Qty Per Inch (tpi):
20 2nd mounting facility
Thread Size:
0.250 inches 2nd mounting facility
Thread Size:
0.375 inches 1st mounting facility
Contact Voltage Rating In Volts:
250.0 dc at sea level
Contact Voltage Rating In Volts:
500.0 ac at sea level
Switch Actuator Momentary Position:
Clockwise single actuator
Mounting Facility Pattern:
Four position rectangular 2nd mounting facility
Switch Actuator Indexing Position Quantity:
2 single actuator
Shaft Type:
Round, flatted, threaded hole single actuator
Terminal Type:
Tab w/screw
Contact Switching Action:
Breaks before makes 3rd section rear
Contact Switching Action:
Breaks before makes 4th section rear
Contact Switching Action:
Breaks before makes 2nd section rear
Switch Actuator Positioning Increment:
90.0 degrees single actuator
Detent Rotational Torque Range:
+0.500/+9.000 inch-pounds single actuator
Switch Actuator Stop Device Type:
Fixed stop single actuator
Contact Load Current Rating:
30.0 amperes resistive load ac at sea level
Contact Load Current Rating:
30.0 amperes resistive load dc at sea level
Style Designator:
Tap, circuit selector
Thread Series Designator:
Unc 2nd mounting facility
Thread Series Designator:
Unef 1st mounting facility
Item Name:
Switch,master Disconnect
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