Rectangular Cable Assemblies

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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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	Series	Product	Connector End A	Connector End A Pin Count	Connector End B	Gender	Cable Length	Wire Gauge - AWG
Rectangular Cable Assemblies M300 3MM F/L CA 06 450MM 22AWG DIL M300-FC11005F2-0150L Harwin 1: $52.44 56In Stock 100Expected 23/11/2026	Mfr. Part No. M300-FC11005F2-0150L Mouser Part No 855-M300FC1105F2150L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 06 450MM 22AWG DIL Learn More about Harwin m300	Datasheet	56In Stock 100Expected 23/11/2026	$52.44 $44.57 $41.74 $40.39 View $37.14 $34.82	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Socket	10 Position	No Connector	Female	150 mm	18 AWG
Rectangular Cable Assemblies M300 3MM F/L CA 03 450MM 20AWG SIL M300-FC70305F2-0450L Harwin 1: $36.77 90In Stock	Mfr. Part No. M300-FC70305F2-0450L Mouser Part No 855-M300FC7305F2450L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 03 450MM 20AWG SIL Learn More about Harwin m300	Datasheet	90In Stock	$36.77 $31.26 $30.02 $28.53 View $27.30 $27.03	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Socket	3 Position	No Connector	Female	450 mm	22 AWG
Rectangular Cable Assemblies M300 3mm HEX SPACER USE WITH M3 SCREW M300-MC50305M1-0150L Harwin 1: $25.81 87In Stock	Mfr. Part No. M300-MC50305M1-0150L Mouser Part No 855-M300MC5305M1150L	Harwin	Rectangular Cable Assemblies M300 3mm HEX SPACER USE WITH M3 SCREW Learn More about Harwin m300	Datasheet	87In Stock	$25.81 $21.93 $20.46 $19.57 View $18.64 $17.52 $16.64 Quote	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Plug	3 Position	No Connector	Male	150 mm	18 AWG
Rectangular Cable Assemblies M300 3MM F/L CA 10 150MM 20AWG DIL M300-FC31005F2-0150L Harwin 1: $49.47 97In Stock	Mfr. Part No. M300-FC31005F2-0150L Mouser Part No 855-M300FC3105F2150L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 10 150MM 20AWG DIL Learn More about Harwin m300	Datasheet	97In Stock	$49.47 $42.17 $39.20 $37.81 View $35.95 $33.51 Quote	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Socket	10 Position	No Connector	Female	150 mm	22 AWG
Rectangular Cable Assemblies M300 3MM M/L CA 06 150MM 20AWG DIL M300-MC30605M1-0150L Harwin 1: $34.13 26In Stock	Mfr. Part No. M300-MC30605M1-0150L Mouser Part No 855-M300MC3605M1150L	Harwin	Rectangular Cable Assemblies M300 3MM M/L CA 06 150MM 20AWG DIL Learn More about Harwin m300	Datasheet	26In Stock	$34.13 $29.00 $27.18 $26.28 View $25.98 $24.92 Quote	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Plug	6 Position	No Connector	Male	150 mm	22 AWG
Rectangular Cable Assemblies M300 3MM M/L CA 06 450MM 22AWG DIL M300-MC11005M1-0150L Harwin 1: $48.97 19In Stock	Mfr. Part No. M300-MC11005M1-0150L Mouser Part No 855-M300MC1105M1150L	Harwin	Rectangular Cable Assemblies M300 3MM M/L CA 06 450MM 22AWG DIL Learn More about Harwin m300	Datasheet	19In Stock	$48.97 $41.61 $39.89 $38.60 View $38.17 $35.85 Quote	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Plug	10 Position	No Connector	Male	150 mm	18 AWG
Rectangular Cable Assemblies M300 3MM F/L CA 03 150MM 18AWG SIL M300-FC60305F2-0150L Harwin 1: $25.76 58In Stock 100Expected 03/11/2026	Mfr. Part No. M300-FC60305F2-0150L Mouser Part No 855-M300FC6305F2150L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 03 150MM 18AWG SIL Learn More about Harwin m300	Datasheet	58In Stock 100Expected 03/11/2026	$25.76 $21.89 $20.51 $19.53 View $18.15 $18.13 $17.82 Quote	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Socket	3 Position	No Connector	Female	150 mm	20 AWG
Rectangular Cable Assemblies M300 3MM M/L CA 06 450MM 18AWG DIL M300-MC30605M1-0450L Harwin 1: $43.16 85In Stock	Mfr. Part No. M300-MC30605M1-0450L Mouser Part No 855-M300MC3605M1450L	Harwin	Rectangular Cable Assemblies M300 3MM M/L CA 06 450MM 18AWG DIL Learn More about Harwin m300	Datasheet	85In Stock	$43.16 $36.79 $34.75 $33.54 View $31.78 $29.23 Quote	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Plug	6 Position	No Connector	Male	450 mm	22 AWG
Rectangular Cable Assemblies M300 3MM F/L CA 10 450MM 20AWG DIL M300-FC31005F2-0450L Harwin 1: $67.64 106In Stock	Mfr. Part No. M300-FC31005F2-0450L Mouser Part No 855-M300FC3105F2450L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 10 450MM 20AWG DIL Learn More about Harwin m300	Datasheet	106In Stock	$67.64 $57.50 $54.22 $52.33 View $49.73 $47.41 Quote	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Socket	10 Position	No Connector	Female	450 mm	22 AWG
Rectangular Cable Assemblies M300 3MM M/L CA 03 450MM 18AWG SIL M300-MC70305M1-0450L Harwin 1: $31.51 67In Stock	Mfr. Part No. M300-MC70305M1-0450L Mouser Part No 855-M300MC7305M1450L	Harwin	Rectangular Cable Assemblies M300 3MM M/L CA 03 450MM 18AWG SIL Learn More about Harwin m300	Datasheet	67In Stock	$31.51 $26.77 $25.09 $24.26 View $23.45 $23.27 $22.52 Quote	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Plug	3 Position	No Connector	Male	450 mm	22 AWG
Rectangular Cable Assemblies M300 3MM F/L CA 10 300MM 22AWG DIL M300-FC11005F2-0450L Harwin 1: $85.11 31In Stock	Mfr. Part No. M300-FC11005F2-0450L Mouser Part No 855-M300FC1105F2450L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 10 300MM 22AWG DIL Learn More about Harwin m300	Datasheet	31In Stock	$85.11 $72.99 $70.81 $65.16 View $61.52 Quote	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Socket	10 Position	No Connector	Female	450 mm	18 AWG
Rectangular Cable Assemblies M300 3MM F/L CA 06 300MM 22AWG DIL M300-FC10605F2-0450L Harwin 1: $52.48 77In Stock	Mfr. Part No. M300-FC10605F2-0450L Mouser Part No 855-M300FC1605F2450L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 06 300MM 22AWG DIL Learn More about Harwin m300	Datasheet	77In Stock	$52.48 $44.66 $41.33 $37.96 View $35.55 Quote	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Socket	6 Position	No Connector	Female	450 mm	18 AWG
Rectangular Cable Assemblies M300 3MM F/L CA 06 150MM 18AWG DIL M300-FC20605F2-0150L Harwin 1: $38.39 154In Stock	Mfr. Part No. M300-FC20605F2-0150L Mouser Part No 855-M300FC2605F2150L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 06 150MM 18AWG DIL Learn More about Harwin m300	Datasheet	154In Stock	$38.39 $32.62 $30.58 $29.83 View $28.49 $26.10 Quote	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Socket	6 Position	No Connector	Female	150 mm	20 AWG
Rectangular Cable Assemblies M300 3MM F/L CA 06 300MM 18AWG DIL M300-FC20605F2-0300L Harwin 1: $44.48 100In Stock	Mfr. Part No. M300-FC20605F2-0300L Mouser Part No 855-M300FC2605F2300L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 06 300MM 18AWG DIL Learn More about Harwin m300	Datasheet	100In Stock	$44.48 $37.92 $35.88 $34.67 View $33.29 $30.12	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Socket	6 Position	No Connector	Female	300 mm	20 AWG
Rectangular Cable Assemblies M300 3MM F/L CA 06 450MM 18AWG DIL M300-FC30605F2-0450L Harwin 1: $48.55 109In Stock	Mfr. Part No. M300-FC30605F2-0450L Mouser Part No 855-M300FC3605F2450L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 06 450MM 18AWG DIL Learn More about Harwin m300	Datasheet	109In Stock	$48.55 $41.33 $38.38 $37.03 View $36.88 $32.89 Quote	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Socket	6 Position	No Connector	Female	450 mm	22 AWG
Rectangular Cable Assemblies M300 3MM F/L CA 03 300MM 22AWG SIL M300-FC50305F2-0450L Harwin 1: $36.41 142In Stock	Mfr. Part No. M300-FC50305F2-0450L Mouser Part No 855-M300FC5305F2450L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 03 300MM 22AWG SIL Learn More about Harwin m300	Datasheet	142In Stock	$36.41 $30.94 $28.82 $27.80 View $27.01 $24.81 Quote	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Socket	3 Position	No Connector	Female	450 mm	18 AWG
Rectangular Cable Assemblies M300 3MM F/L CA 06 150MM 20AWG DIL M300-FC30605F2-0150L Harwin 1: $34.30 22In Stock	Mfr. Part No. M300-FC30605F2-0150L Mouser Part No 855-M300FC3605F2150L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 06 150MM 20AWG DIL Learn More about Harwin m300	Datasheet	22In Stock	$34.30 $29.14 $27.16 $26.23 View $25.00 $23.44 $22.90 Quote	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Socket	6 Position	No Connector	Female	150 mm	22 AWG
Rectangular Cable Assemblies M300 36+36 DIL VERTICAL PIN HEADER TIN M300-FC50305F2-0150L Harwin 1: $26.51 73In Stock	Mfr. Part No. M300-FC50305F2-0150L Mouser Part No 855-M300FC5305F2150L	Harwin	Rectangular Cable Assemblies M300 36+36 DIL VERTICAL PIN HEADER TIN Learn More about Harwin m300	Datasheet	73In Stock	$26.51 $22.54 $20.86 $20.12 View $18.68 $17.54 $16.68 Quote	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Socket	3 Position	No Connector	Female	150 mm	18 AWG
Rectangular Cable Assemblies M300 3MM F/L CA 03 300MM 20AWG SIL M300-FC70305F2-0300L Harwin 1: $31.13 18In Stock	Mfr. Part No. M300-FC70305F2-0300L Mouser Part No 855-M300FC7305F2300L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 03 300MM 20AWG SIL Learn More about Harwin m300	Datasheet	18In Stock	$31.13 $26.46 $25.17 $23.96 View $22.81 $21.39	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Socket	3 Position	No Connector	Female	300 mm	22 AWG
Rectangular Cable Assemblies M300 3MM M/L CA 03 450MM 22AWG SIL M300-MC10605M1-0150L Harwin 1: $34.84 31In Stock	Mfr. Part No. M300-MC10605M1-0150L Mouser Part No 855-M300MC1605M1150L	Harwin	Rectangular Cable Assemblies M300 3MM M/L CA 03 450MM 22AWG SIL Learn More about Harwin m300	Datasheet	31In Stock	$34.84 $29.60 $27.59 $26.64 View $25.38 $23.79 $23.27 Quote	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Plug	6 Position	No Connector	Male	150 mm	18 AWG
Rectangular Cable Assemblies M300 3MM F/L CA 03 450MM 22AWG SIL M300-FC10605F2-0150L Harwin 1: $36.41 637On Order	Mfr. Part No. M300-FC10605F2-0150L Mouser Part No 855-M300FC1605F2150L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 03 450MM 22AWG SIL Learn More about Harwin m300	Datasheet	637On Order On Order Ship Dates Mfr. No: M300-FC10605F2-0150L Stock: 0 On Order: 257 Expected 03/11/2026 380 Expected 10/11/2026 Factory Lead Time: 9 Weeks	$36.41 $30.93 $28.81 $27.79 View $26.47 $24.81 Quote	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Socket	6 Position	No Connector	Female	150 mm	18 AWG
Rectangular Cable Assemblies M300 3MM F/L CA 06 150MM 22AWG DIL M300-FC10605F2-0300L Harwin 1: $42.79 262On Order	Mfr. Part No. M300-FC10605F2-0300L Mouser Part No 855-M300FC1605F2300L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 06 150MM 22AWG DIL Learn More about Harwin m300	Datasheet	262On Order On Order Ship Dates Mfr. No: M300-FC10605F2-0300L Stock: 0 On Order: 52 Expected 27/10/2026 210 Expected 01/12/2026 Factory Lead Time: 9 Weeks	$42.79 $36.43 $34.04 $32.84 View $31.27 $28.99 Quote	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Socket	6 Position	No Connector	Female	300 mm	18 AWG
Rectangular Cable Assemblies M300 3MM F/L CA 03 150MM 20AWG SIL M300-FC70305F2-0150L Harwin 1: $22.68 83Expected 03/11/2026	Mfr. Part No. M300-FC70305F2-0150L Mouser Part No 855-M300FC7305F2150L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 03 150MM 20AWG SIL Learn More about Harwin m300	Datasheet	83Expected 03/11/2026	$22.68 $20.45 $19.67 $19.47 View $18.30 $17.49 $16.93	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Socket	3 Position	No Connector	Female	150 mm	22 AWG
Rectangular Cable Assemblies M300 3MM F/L CA 10 150MM 22AWG DIL M300-FC11005F2-0300L Harwin 1: $69.98 Non-Stocked Lead-Time 9 Weeks	Mfr. Part No. M300-FC11005F2-0300L Mouser Part No 855-M300FC1105F2300L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 10 150MM 22AWG DIL Learn More about Harwin m300	Datasheet	Non-Stocked Lead-Time 9 Weeks	$69.98 $59.48 $56.20 $54.27 View $51.46 $49.75 Quote	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Socket	10 Position	No Connector	Female	300 mm	18 AWG
Rectangular Cable Assemblies M300 3MM F/L CA 10 300MM 18AWG DIL M300-FC21005F2-0300L Harwin 100: $42.34 Non-Stocked Lead-Time 9 Weeks	Mfr. Part No. M300-FC21005F2-0300L Mouser Part No 855-M300FC2105F2300L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 10 300MM 18AWG DIL Learn More about Harwin m300	Datasheet	Non-Stocked Lead-Time 9 Weeks	$42.34 $39.69	Min.: 100 Mult.: 10	M300	Discrete Wire Cable Assemblies	Socket	10 Position	No Connector	Female	300 mm	20 AWG

M300 3.00mm Power Connectors

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