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Technical Data Sheet
307B77 ✓ 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, overall_width: 3.310 INCHES NOMINAL IN, overall_height: 3.030 INCHES NOMINAL IN, overall_length: 4.060 INCHES NOMINAL IN, features_provided: POLARIZED, environmental_protection: DUSTPROOF. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5945-00-259-9659, 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
307B77
NSN: 5945-00-259-9659
FSC: 5945
CAGE: 44940 — CUMMINS POWER GENERATION INC. (USA)
SPECIFICATIONS
duty_typeCONTINUOUS
coil_quantity1
overall_width3.310 INCHES NOMINAL IN
overall_height3.030 INCHES NOMINAL IN
overall_length4.060 INCHES NOMINAL IN
special_featuresIN ADDITION TO THE 25.8 OHMS RESISTANCE OF WINDING,A RESISTANCE OF 75 OHMS IS WIRED IN SERIES GIVING A TOTAL RESISTANCE OF 100.8 OHMS
winding_quantity1
features_providedPOLARIZED
environmental_protectionDUSTPROOF
terminal_type_and_quantity5 PIN ALL FUNCTIONS
winding_dc_resistance_rating25.8 OHMS NOMINAL SINGLE WINDING
mounting_facility_type_and_quantity1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY
NSN5945-00-259-9659
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RELAY,ELECTROMAGNETIC TITLE COMPONENT PN 307B77 MFR RELAY,ELECTROMAGNETIC
KEY FEATURES
NONPILE-UP MAIN CONTACT ARRANGEMENT: 1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
FEATURES PROVIDED: POLARIZED
OPERATING VOLTAGE RATING AND TYPE AT SPECIFIED TEMP: 28.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
TERMINAL TYPE AND QUANTITY: 5 PIN ALL FUNCTIONS
MAIN CONTACT LOAD CURRENT RATING AT MAXIMUM RATED VOLTAGE: 100.0 AMPERES DC RESISTIVE LOAD
MOUNTING FACILITY TYPE AND QUANTITY: 1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY
NOMINAL OPERATING CURRENT RATING AND TYPE: 280.0 MILLIAMPERES DC SINGLE WINDING
TECHNICAL CHARACTERISTICS (FLIS)
NONPILE-UP MAIN CONTACT ARRANGEMENT1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
OVERALL WIDTH3.310 INCHES NOMINAL IN
FEATURES PROVIDEDPOLARIZED
OPERATING VOLTAGE RATING AND TYPE AT SPECIFIED TEMP28.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
TERMINAL TYPE AND QUANTITY5 PIN ALL FUNCTIONS
MAIN CONTACT LOAD CURRENT RATING AT MAXIMUM RATED VOLTAGE100.0 AMPERES DC RESISTIVE LOAD
MOUNTING FACILITY TYPE AND QUANTITY1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY
NOMINAL OPERATING CURRENT RATING AND TYPE280.0 MILLIAMPERES DC SINGLE WINDING
DUTY TYPECONTINUOUS
MAIN CONTACT MAXIMUM VOLTAGE RATING IN VOLTS24.0 DC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
AA59649-202BInterchangeable
interchangeable cross-reference
interchangeable
2X6503BInterchangeable
interchangeable cross-reference
interchangeable
70425Interchangeable
interchangeable cross-reference
interchangeable
125-5503Interchangeable
interchangeable cross-reference
interchangeable
76603Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 307B77?
307B77 is a RELAY,ELECTROMAGNETIC.
What parts can replace 307B77?
There are 5 known substitutes for 307B77: AA59649-202B, 2X6503B, 70425 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 307B77?
307B77 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5945-00-259-9659. This indicates validated use in U.S. government and defense supply chains.
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