Contactor A-1077 Series



The A-1077 Series Contactor (also sometimes referred to as a Relay or Power Relay) is manufactured or cataloged by Hartman Electrical Manufacturing Division. Part numbers within the A-1077 Series include but may not be limited to A-1077, A-1077B, A-1077D, A-1077DD, A-1077F, A-1077V, and A-1077W. The A-1077DD Contactor is a Single Pole Single Throw (SPST) Normally Open electrically held Contactor. The Main Contacts arrangement is SPST Normally Open with a Current Rating of 100 Amperes and 28 VDC. The Auxiliary Contact(s) arrangement is SPST, the Current Rating is 5 Amperes, and the Voltage Rating is 28 VDC. The Coil Duty Cycle is Continuous, Pickup Max is 16.5 VDC at 25 degrees Celsius, the Dropout is 1.0 to 7.0 VDC, and the Resistance is 70 Ohms (+-) 20% at 25 degrees Celsius. Typically, the A-1077 Series Contactor can be found on turbine Helicopters, Turboprop, Light Jet, and Heavy Jet aircraft within the Commercial and Military sectors.

Additional information

Weight 3 lbs
Dimensions 6 × 6 × 6 in

Aircraft Type

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Aircraft Model

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Part Number

A-1077B, A-1077D, A-1077DD, A-1077F, A-1077V, A-1077W, A-1077