Model: 251

Electromagnetic Relay

Properties:

Thread Class
2a single mounting facility
Thread Direction
Right-hand single mounting facility
Overall Length
3.500 inches
Center To Center Distance Between Mounting Facilities Parallel To Length
2.375 inches single mounting facility
Center To Center Distance Between Mounting Facilities Parallel To Width
2.125 inches single mounting facility
Overall Height
2.625 inches
Overall Width
3.000 inches
Case Material
Metal
Environmental Protection
Dustproof
Fragility Factor
Moderately rugged
End Application
Alm&226 hts f
Frequency In Hertz
50.0
Winding Quantity
1
Purpose For Which Designed
General
Coil Quantity
1
Duty Type
Continuous
Arc Quenching Method
Air
Mounting Facility Type And Quantity
4 threaded stud single mounting facility
Storage Type
General purpose warehouse
Thready Qty Per Inch (tpi)
32 single mounting facility
Thread Size
0.164 inches single mounting facility
Mounting Facility Pattern
Rectangular single mounting facility
Nonpile-up Main Contact Arrangement
1 pole, single throw, normally open, momentary action and 1 pole, single throw, normally closed, momentary action
Operating Voltage Rating And Type At Specificationified Temp
120.0 volts ac 25 degrees celsius single winding
Main Contact Load Current Rating At Maximum Rated Voltage
5.0 amperes ac resistive load and 5.0 amperes dc resistive load
Main Contact Maximum Voltage Rating In Volts
120.0 ac and 28.0 dc
Thread Series Designator
Unc single mounting facility
Terminal Type And Quantity
6 threaded stud all functions
NSN
5945-01-227-6447
Part Number
251
Description
Relay,electromagnetic
CAGE
18741

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 251 NSN 5945-01-227-6447

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:
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:
--
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
M
SPI No.:
SPI Rev.:
SPC Mkg:
ZZ
LVL_A:
Q
LVL_B:
Q

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: 8536490050
  • SITC: 77254
  • End Use: Electric apparatus
  • NAICS: 335314
  • USDA: 1

Freight Class: Relays, electromechanical, with contacts rated at less than 10 a, for a voltage exceeding 60 v but not exceeding 1000 v

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