M300 3.00mm Power Connectors

Harwin M300 3.00mm Power Connectors are a range of high-reliability, high-performance connectors for aerospace, defense, industrial, or other harsh environment applications. With a compact power connection of up to 10A per contact, the M300 connectors achieve a lightweight, robust solution with a proven track record under extreme conditions. Fitted stainless steel jackscrews guard against vibration and shock, while a four-finger contact design maintains electrical continuity. Low outgassing properties meet NASA requirements for vacuum or space usage. Harwin M300 3.00mm Power Connectors operate in a temperature range of -65°C to +175°C and withstand 1000 mating cycles.

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Product
Connector End A
Connector End A Pin Count
Connector End B
Gender
Cable Length
Wire Gauge - AWG
Harwin Rectangular Cable Assemblies M300 3MM F/L CA 03 450MM 20AWG SIL
Datasheet
90In Stock
Min.: 1
Mult.: 1

M300 Discrete Wire Cable Assemblies Socket 3 Position No Connector Female 450 mm 22 AWG
Harwin Rectangular Cable Assemblies M300 3MM F/L CA 06 450MM 22AWG DIL
Datasheet
99In Stock
Min.: 1
Mult.: 1

M300 Discrete Wire Cable Assemblies Socket 10 Position No Connector Female 150 mm 18 AWG
Harwin Rectangular Cable Assemblies M300 3mm HEX SPACER USE WITH M3 SCREW
Datasheet
87In Stock
Min.: 1
Mult.: 1

M300 Discrete Wire Cable Assemblies Plug 3 Position No Connector Male 150 mm 18 AWG
Harwin Rectangular Cable Assemblies M300 3MM F/L CA 10 150MM 20AWG DIL
Datasheet
147In Stock
Min.: 1
Mult.: 1

M300 Discrete Wire Cable Assemblies Socket 10 Position No Connector Female 150 mm 22 AWG
Harwin Rectangular Cable Assemblies M300 3MM M/L CA 06 450MM 22AWG DIL
Datasheet
19In Stock
Min.: 1
Mult.: 1

M300 Discrete Wire Cable Assemblies Plug 10 Position No Connector Male 150 mm 18 AWG
Harwin Rectangular Cable Assemblies M300 3MM F/L CA 03 150MM 18AWG SIL
Datasheet
59In Stock
100Expected 03/11/2026
Min.: 1
Mult.: 1

M300 Discrete Wire Cable Assemblies Socket 3 Position No Connector Female 150 mm 20 AWG
Harwin Rectangular Cable Assemblies M300 3MM M/L CA 06 150MM 20AWG DIL
Datasheet
26In Stock
Min.: 1
Mult.: 1

M300 Discrete Wire Cable Assemblies Plug 6 Position No Connector Male 150 mm 22 AWG
Harwin Rectangular Cable Assemblies M300 3MM M/L CA 06 450MM 18AWG DIL
Datasheet
85In Stock
Min.: 1
Mult.: 1

M300 Discrete Wire Cable Assemblies Plug 6 Position No Connector Male 450 mm 22 AWG
Harwin Rectangular Cable Assemblies M300 3MM F/L CA 10 450MM 20AWG DIL
Datasheet
106In Stock
Min.: 1
Mult.: 1

M300 Discrete Wire Cable Assemblies Socket 10 Position No Connector Female 450 mm 22 AWG
Harwin Rectangular Cable Assemblies M300 3MM M/L CA 03 450MM 18AWG SIL
Datasheet
67In Stock
Min.: 1
Mult.: 1

M300 Discrete Wire Cable Assemblies Plug 3 Position No Connector Male 450 mm 22 AWG
Harwin Rectangular Cable Assemblies M300 3MM F/L CA 10 300MM 22AWG DIL
Datasheet
31In Stock
Min.: 1
Mult.: 1

M300 Discrete Wire Cable Assemblies Socket 10 Position No Connector Female 450 mm 18 AWG
Harwin Rectangular Cable Assemblies M300 3MM F/L CA 06 300MM 22AWG DIL
Datasheet
77In Stock
Min.: 1
Mult.: 1

M300 Discrete Wire Cable Assemblies Socket 6 Position No Connector Female 450 mm 18 AWG
Harwin Rectangular Cable Assemblies M300 3MM F/L CA 06 150MM 18AWG DIL
Datasheet
154In Stock
Min.: 1
Mult.: 1

M300 Discrete Wire Cable Assemblies Socket 6 Position No Connector Female 150 mm 20 AWG
Harwin Rectangular Cable Assemblies M300 3MM F/L CA 06 450MM 18AWG DIL
Datasheet
109In Stock
Min.: 1
Mult.: 1

M300 Discrete Wire Cable Assemblies Socket 6 Position No Connector Female 450 mm 22 AWG
Harwin Rectangular Cable Assemblies M300 3MM F/L CA 03 300MM 22AWG SIL
Datasheet
142In Stock
Min.: 1
Mult.: 1

M300 Discrete Wire Cable Assemblies Socket 3 Position No Connector Female 450 mm 18 AWG
Harwin Rectangular Cable Assemblies M300 3MM F/L CA 10 150MM 18AWG DIL
Datasheet
33In Stock
100Expected 01/12/2026
Min.: 1
Mult.: 1

M300 Discrete Wire Cable Assemblies Socket 10 Position No Connector Female 150 mm 20 AWG
Harwin Rectangular Cable Assemblies M300 3MM F/L CA 06 150MM 20AWG DIL
Datasheet
25In Stock
Min.: 1
Mult.: 1

M300 Discrete Wire Cable Assemblies Socket 6 Position No Connector Female 150 mm 22 AWG
Harwin Rectangular Cable Assemblies M300 36+36 DIL VERTICAL PIN HEADER TIN
Datasheet
76In Stock
Min.: 1
Mult.: 1

M300 Discrete Wire Cable Assemblies Socket 3 Position No Connector Female 150 mm 18 AWG
Harwin Rectangular Cable Assemblies M300 3MM F/L CA 03 300MM 20AWG SIL
Datasheet
18In Stock
Min.: 1
Mult.: 1

M300 Discrete Wire Cable Assemblies Socket 3 Position No Connector Female 300 mm 22 AWG
Harwin Rectangular Cable Assemblies M300 3MM M/L CA 03 450MM 22AWG SIL
Datasheet
31In Stock
Min.: 1
Mult.: 1

M300 Discrete Wire Cable Assemblies Plug 6 Position No Connector Male 150 mm 18 AWG
Harwin Rectangular Cable Assemblies M300 3MM F/L CA 03 450MM 22AWG SIL
Datasheet
637On Order
Min.: 1
Mult.: 1

M300 Discrete Wire Cable Assemblies Socket 6 Position No Connector Female 150 mm 18 AWG
Harwin Rectangular Cable Assemblies M300 3MM F/L CA 06 150MM 22AWG DIL
Datasheet
262On Order
Min.: 1
Mult.: 1

M300 Discrete Wire Cable Assemblies Socket 6 Position No Connector Female 300 mm 18 AWG
Harwin Rectangular Cable Assemblies M300 3MM F/L CA 06 300MM 18AWG DIL
Datasheet
100Expected 08/10/2026
Min.: 1
Mult.: 1

M300 Discrete Wire Cable Assemblies Socket 6 Position No Connector Female 300 mm 20 AWG
Harwin Rectangular Cable Assemblies M300 3MM F/L CA 03 150MM 20AWG SIL
Datasheet
83Expected 03/11/2026
Min.: 1
Mult.: 1

M300 Discrete Wire Cable Assemblies Socket 3 Position No Connector Female 150 mm 22 AWG
Harwin Rectangular Cable Assemblies M300 3MM F/L CA 10 150MM 22AWG DIL
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 1
Mult.: 1

M300 Discrete Wire Cable Assemblies Socket 10 Position No Connector Female 300 mm 18 AWG