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A12603 — RELAY,ELECTROMAGNETIC

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

A12603: RELAY,ELECTROMAGNETIC.

The RELAY,ELECTROMAGNETIC is a the manufacturer industrial component. Key specifications include hole_diameter: 0.375 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, winding_dc_resistance_rating: 200.0 OHMS NOMINAL SINGLE WINDING, nonpile-up_main_contact_arrangement: 2 POLE, DOUBLE THROW, ONE POSITION MOMENTARY, operating_voltage_rating_and_type_at_specified_temp: 12.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING, main_contact_load_current_rating_at_maximum_rated_voltage: 2.0 AMPERES DC RESISTIVE LOAD. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-214-3712, 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
A12603
NSN: 5330-00-214-3712
NIINs: 002143712, 013764158
FSC: 5330 — Packing and Gasket Materials
CAGE: 41197 — MODINE MFG CO (USA)
SPECIFICATIONS
coil_quantity1
hole_diameter0.375 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
winding_quantity1
winding_dc_resistance_rating200.0 OHMS NOMINAL SINGLE WINDING
nonpile-up_main_contact_arrangement2 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
operating_voltage_rating_and_type_at_specified_temp12.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
main_contact_load_current_rating_at_maximum_rated_voltage2.0 AMPERES DC RESISTIVE LOAD
NSN5330-00-214-3712
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A12603 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
HOLE DIAMETER: 0.375 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
TECHNICAL CHARACTERISTICS
HOLE DIAMETER0.375 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
SUBSTITUTES & CROSS-REFERENCES 1
BB7407Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A12603?
A12603 is a RELAY,ELECTROMAGNETIC.
What parts can replace A12603?
There is 1 known substitute for A12603: BB7407. Substitute compatibility should be verified for your specific system.
What is the NSN for A12603?
A12603 is cataloged in the U.S. Government catalog under NSN 5330-00-214-3712. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.