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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Description Datasheet Availability Pricing (RON) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Series
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 06 450MM 22AWG DIL
Datasheet
113In 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 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 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 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 HEX SPACER USE WITH M3 SCREW
Datasheet
93In 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 03 150MM 18AWG SIL
Datasheet
59In Stock
100Expected 11/3/2026
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
31In 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 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 03 450MM 20AWG SIL
Datasheet
50In Stock
50Expected 8/17/2026
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 M/L CA 06 450MM 22AWG DIL
Datasheet
23In 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 10 300MM 22AWG DIL
Datasheet
37In 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
78In 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 10 150MM 18AWG DIL
Datasheet
45In Stock
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 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 36+36 DIL VERTICAL PIN HEADER TIN
Datasheet
103In 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 22AWG SIL
Datasheet
148In 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 06 150MM 22AWG DIL
Datasheet
26In Stock
100Expected 10/27/2026
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 150MM 20AWG DIL
Datasheet
27In 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 3MM F/L CA 06 450MM 18AWG DIL
Datasheet
39In Stock
70Expected 8/18/2026
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 20AWG SIL
Datasheet
20In 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
39In 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
637Expected 11/3/2026
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 300MM 18AWG DIL
Datasheet
100Expected 9/30/2026
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 11/3/2026
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 7 Weeks
Min.: 1
Mult.: 1

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