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Technical Data Sheet
MILR5757TYPEBCLASSB ✓ Verified by PartsTable
· COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The RELAY,ELECTROMAGNETIC is a the manufacturer industrial component. Key specifications include duty_type: CONTINUOUS, thread_class: 2A SINGLE MOUNTING FACILITY A, overall_width: 1.120 INCHES NOMINAL IN, overall_height: 1.750 INCHES NOMINAL IN, overall_length: 1.650 INCHES NOMINAL IN, nominal_thread_size: 0.138 INCHES SINGLE MOUNTING FACILITY IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5945-00-259-5691, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MILR5757TYPEBCLASSB
NSN: 5945-00-259-5691
FSC: 5945
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
duty_typeCONTINUOUS
thread_class2A SINGLE MOUNTING FACILITY A
coil_quantity1
overall_width1.120 INCHES NOMINAL IN
overall_height1.750 INCHES NOMINAL IN
overall_length1.650 INCHES NOMINAL IN
winding_quantity1
nominal_thread_size0.138 INCHES SINGLE MOUNTING FACILITY IN
environmental_protectionHERMETIC
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
mounting_facility_patternIN-LINE SINGLE MOUNTING FACILITY
nondefinitive_spec/std_dataB TYPE AND 3 CLASS
NSN5945-00-259-5691
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RELAY,ELECTROMAGNETIC TITLE COMPONENT PN MILR5757TYPEBCLASSB MFR RELAY,ELECTROMAGNETIC
KEY FEATURES
MOUNTING FACILITY TYPE AND QUANTITY: 2 THREADED HOLE(S) SINGLE MOUNTING FACILITY
OPERATING VOLTAGE RATING AND TYPE AT SPECIFIED TEMP: 26.5 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
NOMINAL THREAD SIZE: 0.138 INCHES SINGLE MOUNTING FACILITY IN
MAIN CONTACT LOAD CURRENT RATING AT MAXIMUM RATED VOLTAGE: 2.0 AMPERES AC AND 5.0 AMPERES DC RESISTIVE LOAD
MAIN CONTACT MAXIMUM VOLTAGE RATING IN VOLTS: 115.0 AC AND 29.0 DC
NOMINAL OPERATING CURRENT RATING AND TYPE: 80.0 MILLIAMPERES DC SINGLE WINDING
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL HEIGHT1.750 INCHES NOMINAL IN
MOUNTING FACILITY TYPE AND QUANTITY2 THREADED HOLE(S) SINGLE MOUNTING FACILITY
OPERATING VOLTAGE RATING AND TYPE AT SPECIFIED TEMP26.5 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
NOMINAL THREAD SIZE0.138 INCHES SINGLE MOUNTING FACILITY IN
MAIN CONTACT LOAD CURRENT RATING AT MAXIMUM RATED VOLTAGE2.0 AMPERES AC AND 5.0 AMPERES DC RESISTIVE LOAD
MAIN CONTACT MAXIMUM VOLTAGE RATING IN VOLTS115.0 AC AND 29.0 DC
NOMINAL OPERATING CURRENT RATING AND TYPE80.0 MILLIAMPERES DC SINGLE WINDING
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
ENVIRONMENTAL PROTECTIONHERMETIC
OVERALL LENGTH1.650 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
MH12D26.5VDCInterchangeable
interchangeable cross-reference
interchangeable
1564707Interchangeable
interchangeable cross-reference
interchangeable
119-5-2Interchangeable
interchangeable cross-reference
interchangeable
MH12D26-5VDCInterchangeable
Same NIIN cross-reference
interchangeable
E4146Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MILR5757TYPEBCLASSB?
MILR5757TYPEBCLASSB is a RELAY,ELECTROMAGNETIC.
What parts can replace MILR5757TYPEBCLASSB?
There are 5 known substitutes for MILR5757TYPEBCLASSB: MH12D26.5VDC, 1564707, 119-5-2 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MILR5757TYPEBCLASSB?
MILR5757TYPEBCLASSB is cataloged in the Federal Logistics Information System (FLIS) under NSN 5945-00-259-5691. This indicates validated use in U.S. government and defense supply chains.
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