Model: 51A81

Electromagnetic Relay

Special Features:

Copper end slug

Properties:

Thread Class
2a single mounting facility
Overall Length
2.430 inches
Overall Diameter
1.650 inches
Environmental Protection
Hermetic
Winding Quantity
1
Coil Quantity
1
Winding Dc Resistance Rating
3.2 kilohms single winding
Duty Type
Continuous
Mounting Facility Type And Quantity
3 threaded stud single mounting facility
Pile-up Main Contact Form Arrangement
1a and 1c
Thready Qty Per Inch (tpi)
32 single mounting facility
Thread Size
0.138 inches single mounting facility
Mounting Facility Pattern
Ciruclar single mounting facility
Operating Voltage Rating And Type At Specificationified Temp
28.0 volts dc 25 degrees celsius single winding
Main Contact Load Current Rating At Maximum Rated Voltage
3.0 amperes ac resistive load
Main Contact Maximum Voltage Rating In Volts
50.0 ac
Thread Series Designator
Unc single mounting facility
Terminal Type And Quantity
7 pin all functions
NSN
5945-00-556-3314
Part Number
51A81
Description
Relay,electromagnetic
CAGE
80234

A relay which is actuated by the effect of a magnetic field developed by the current in its energizing coil(s). Includes solenoid and armature types. Excludes contactor, magnetic; relay, meter movement; relay, motor driven; relay, reed; relay, resonant reed; relay, rotary; and switch, stepping.

Part 51A81 NSN 5945-00-556-3314

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
32512
FIIG:
A03300
Concept No.:
1
App. Key:
A
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:
ESD:
MMAC:
CRITL:
X

Freight Classification

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

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Schedule B and Export
  • Schedule B: 8536410020
  • SITC: 77254
  • End Use: Electric apparatus
  • NAICS: 335314
  • USDA: 1

Freight Class: Relays, electromechanical, with contacts rated less than 10 a, for a voltage not exceeding 60 v

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