Model: 21EN51-S

Sensitive Switch

Properties:

Body Style
Bushing mounted
Hazardous Locations/environmental Protection
Corrosion resistant
Overall Length
3.316 inches
Overall Height
1.000 inches
Overall Width
1.000 inches
Body Diameter
1.000 inches
Bushing Length
Between 0.627 inches and 0.687 inches
Body Length
1.505 inches
Case Material
Metal
Actuator Style
Roller plunger
Actuator Free Position Height
Between 1.751 inches and 1.811 inches
Actuator Roller Diameter
0.500 inches
Actuator Roller Width
0.125 inches
Maximum Voltage Rating In Volts
115.0 ac and 28.0 dc
Inclosure Type
Fully enclosed
Mounting Method
Threaded bushing
Thread Size
0.625 inches
Nonpile-up Contact Arrangement
2 pole, single throw, normally closed, momentary action single switch unit
Switch Release Force
32.0 ounces
Switch Actuating Force
Between 48.0 ounces and 96.0 ounces
Actuator Movement
Between 0.040 pretravel inches and 0.250 overtravel inches and 0.020 differential inches
Contact Load Current Rating At Maximum Rated Voltage
5.000 amperes resistive dc and 3.000 amperes inductive dc and 24.000 amperes lamp dc and 4.000 amperes motor dc and 5.000 amperes resistive ac and 5.000 amperes inductive ac
Thread Series Designator
Unef
Terminal Type And Quantity
4 tab w/screw
NSN
5930-01-178-4285
Part Number
21EN51-S
Description
Switch,sensitive
CAGE
91929

A switch with a quick-acting mechanism actuated by a highly delicate tactile contact. Includes membrane switch. excludes switch, flexible; switch, pressure; and switch, thermostatic.

Part 21EN51-S NSN 5930-01-178-4285

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00399
FIIG:
A053A0
Concept No.:
App. Key:
S
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:
P
PMIC:
A
ESD:
ESD:
MMAC:
EH
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.5000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
061300
UFC:
34410
LTL:
77.5
LCL:
--
WCC:
72D
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 8536509050
  • SITC: 77255
  • End Use: Electric apparatus
  • NAICS: 335931
  • USDA: 1

Freight Class: Switches, slide, for a voltage not exceeding 1,000 v

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