Model: CM31749

Nonwire Wound Variable Resistor

Properties:

Section Quantity
2
Body Style
Rectangular w/bushing
Reliability Indicator
Not established
Overall Length
2.156 inches
Overall Height
1.750 inches
Overall Width
1.234 inches
Shaft Diameter
0.250 inches
Shaft Length
0.750 inches
Mounting Bushing Length
0.375 inches
Body Length
1.406 inches
Body Width
1.234 inches
Body Height
1.438 inches
Shaft Style
Round
Switch Type
Pull
Switch Voltage Rating In Volts
117.0
Actuator Type
Single shaft
Effective Electrical Rotation In Deg Angular Rotation
312.0
Nonturn Device Location
At 9 oclock
Nonturn Device Radius
0.531 inches
Switch Operating Position
Any position of rotation travel
Switch Contact Arrangement
Single pole, single throw, normally open, both positions maintained
Fragility Factor
Moderately rugged
Screw Thread Diameter
0.375 inches
Screw Thread Series Designator
Unef
Screw Thready Qty Per Inch (tpi)
32.0
Terminal Location
Rear-bottom
Mounting Method
Standard bushing
Features Provided
Shaft seal and switch
Electrical Resistance Per Section
1.0 percent, rated amperes c and better finish and 100.0 percent, rated amperes c and better industrial clears
Electrical Resistance Per Section
1.0 kilohms 1st section and 100.0 kilohms 2nd section
Rotary Actuator Travel In Angular Deg
312.0
Resistance Tempurature Characteristic Range Per Section In Percent
-3.0/+0.0 -55 degrees celsius all sections and -5.0/+10.0 -25 degrees celsius all sections and -5.0/+10.0 25 degrees celsius all sections and +0.0/+3.0 120 degrees celsius all sections
Resistance Tempurature Characteristic Range Per Section In Percent
-3.0 to 0.0 -55 degrees celsius all sections and -5.0 to 10.0 -25 degrees celsius all sections and -5.0 to 10.0 25 degrees celsius all sections and +0.0 to 3.0 120 degrees celsius all sections
Ambient Tempurature In Deg Celsius Per Section At Zero Percent Rated Power
150.0 all sections
Power Dissipation Rating Per Section In Watts
1.0 7th secondary finish and 2.0 7th secondary pattern
Power Dissipation Rating Per Section In Watts
1.0 free air 1st section and 2.0 free air 2nd section
Resistance Tolerance Per Section In Percent
-10.0/+10.0 all sections
Resistance Tolerance Per Section In Percent
-10.0 to 10.0 all sections
Actuator Travel Control Feature
Stops
Ambient Tempurature In Deg Celsius Per Section At Full Rated Power
70.0 all sections
Switch Current Type And Rating In Amps
3.000 ac/dc
Standard Taper Curve Per Section
C 1st section and a 2nd section
Terminal Type And Quantity
8 tab, solder lug
NSN
5905-00-761-5390
Part Number
CM31749
Description
Resistor,variable,nonwire Wound,
CAGE
12697

A resistor in which a sliding or rolling contact moves over an exposed area of the resistive element to change the ohmic value of the output. The functional tolerance (linearity), if given, of the output is greater than plus or minus 1 percent on linear outputs. Specified outputs such as sine, cosine, tangent, etc., shall be considered to be precision. For items having manually positioned taps designed to be set and fixed prior to use, see resistor, adjustable. For items with step by step variation, see rheostat and resistor, step by step. For tandem-mounted items designed to function together as an attenuator (and rated accordingly), see attenuator, variable. Excludes resistor (1), variable, wire wound, nonprecision; resistor (1), variable, nonwire wound precision; and resistor (1), variable, wire wound, precision.

Part CM31749 NSN 5905-00-761-5390

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
37405
FIIG:
A002A0
Concept No.:
1
App. Key:
B
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
B
ESD:
B
MMAC:
EH
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.3000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
ZZ
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
062960
UFC:
35140
LTL:
77.5
LCL:
--
WCC:
72D
TCC:
3
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 8533400080
  • SITC: 77235
  • End Use: Electric apparatus
  • NAICS: 334416
  • USDA: 1

Freight Class: Variable resistors, including potentiometers, nesoi

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