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3 PIN NATO AN2551 external power connector for 12V / 24V or 28VDC application


For Helicopters, Airplanes


Diamond aircraft, Cirrus, Beechcraft, Cessna, Mooney, Kodiak, Hawker and many other aircraft.



Designed and manufactured by Aircraftplugs.


3 PINS NATO AN2551 standard plug, made of strong polycarbonate, registered plug.


Construction screws together in minutes.


Sleeves are silver plated. With solenoid pin. Stainless steel screws.


Corrosion proof  and resist to high temperature, voltage and amperage.


Hardness 13800psi, max. recommended cable for '0' AWG (53 mm2) .


Mates with the aircraftplugs AN2552-3A external power receptacle.


Performance and dimensions to ISO 461 (BS4G173:1985) and appropriate MOD (Air)

and NSN Standards , (0.7 kg)


Cable assemblies to client requirements avialable.


Recommended wires : 25mm2  or 2 AWG.


Glass transition temperature of about 150 °C (297 °F).


Average change in Resistance after 100 dry cycles: < 2µΩ.  In stock. Made in Belgium.


lit-mod Technical sheet Extra picture

Part Numbers :

AN2551    : Complete AN2551 connector assembly

AN2551-F : Set of 2 main contacts and relay contact.

AN2551-C : Set of 2 main contacts pure cupper silver plated with spring system.

AN2551-L : Relay contact with switch with cables.

AN2551-M : Relay contact with in split contact and cables.

AN2551-N : Ralay contact with internal spring.

AN2551-P :  Polycarbonate cover.

AN2551-O : Polycarbonate cover red with holes.

AN2551-S : Set of 6 stainless steel screw.

AN2551-A : Assembly of AN2551 connector with 2 meter 25mm2 cable.

AN2551-B : Assembly of AN2551 connector with 35mm2 cable.

AN2551-D : Assembly of AN2551 connector assembly with crocodile clamps.


for specific assemblies, check with our sales department.

Extra picture /2 Brochure Extra picture /3

Pictures and data are non-binding and can be changed by the manufacturer without notice

Instructions Datasheet Purpose of third terminal

According to :


AN2551 , ISO461, appropriate MOD (Air)  and NSN Standards

SB50_handleKIT Aircraftplugs_SB50_holder