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 03 150MM 18AWG SIL M300-FC60305F2-0150L Harwin 1: $33.49 85In Stock 40Expected 10/30/2026	Mfr. Part # M300-FC60305F2-0150L Mouser Part # 855-M300FC6305F2150L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 03 150MM 18AWG SIL Learn More about Harwin m300	Datasheet	85In Stock 40Expected 10/30/2026	$33.49 $28.46 $26.66 $25.39 View $23.60 $23.57 $23.17 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 F/L CA 03 450MM 20AWG SIL M300-FC70305F2-0450L Harwin 1: $47.80 90In Stock	Mfr. Part # M300-FC70305F2-0450L Mouser Part # 855-M300FC7305F2450L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 03 450MM 20AWG SIL Learn More about Harwin m300	Datasheet	90In Stock	$47.80 $40.64 $39.03 $37.09 View $35.49 $35.14	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Socket	3 Position	No Connector	Female	450 mm	22 AWG
Rectangular Cable Assemblies M300 3MM F/L CA 06 150MM 18AWG DIL M300-FC20605F2-0150L Harwin 1: $49.76 154In Stock	Mfr. Part # M300-FC20605F2-0150L Mouser Part # 855-M300FC2605F2150L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 06 150MM 18AWG DIL Learn More about Harwin m300	Datasheet	154In Stock	$49.76 $42.28 $39.64 $38.16 View $36.61 $33.93 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 10 150MM 20AWG DIL M300-FC31005F2-0150L Harwin 1: $64.31 87In Stock	Mfr. Part # M300-FC31005F2-0150L Mouser Part # 855-M300FC3105F2150L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 10 150MM 20AWG DIL Learn More about Harwin m300	Datasheet	87In Stock	$64.31 $54.82 $50.95 $49.15 View $46.80 $43.58 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 450MM 22AWG DIL M300-MC11005M1-0150L Harwin 1: $63.66 19In Stock	Mfr. Part # M300-MC11005M1-0150L Mouser Part # 855-M300MC1105M1150L	Harwin	Rectangular Cable Assemblies M300 3MM M/L CA 06 450MM 22AWG DIL Learn More about Harwin m300	Datasheet	19In Stock	$63.66 $54.09 $51.86 $50.18 View $49.62 $46.61 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 06 450MM 22AWG DIL M300-FC11005F2-0150L Harwin 1: $68.17 23In Stock 200On Order	Mfr. Part # M300-FC11005F2-0150L Mouser Part # 855-M300FC1105F2150L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 06 450MM 22AWG DIL Learn More about Harwin m300	Datasheet	23In Stock 200On Order On Order Ship Dates Mfr. #: M300-FC11005F2-0150L Stock: 23 Can Ship Immediately On Order: 100 Expected 1/5/2027 100 Expected 1/12/2027 Factory Lead-Time: 9 Weeks	$68.17 $57.94 $54.26 $52.51 View $48.28 $45.27	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Socket	10 Position	No Connector	Female	150 mm	18 AWG
Rectangular Cable Assemblies M300 3MM M/L CA 06 150MM 20AWG DIL M300-MC30605M1-0150L Harwin 1: $44.37 26In Stock	Mfr. Part # M300-MC30605M1-0150L Mouser Part # 855-M300MC3605M1150L	Harwin	Rectangular Cable Assemblies M300 3MM M/L CA 06 150MM 20AWG DIL Learn More about Harwin m300	Datasheet	26In Stock	$44.37 $37.70 $35.33 $34.16 View $33.77 $32.40 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 18AWG DIL M300-MC30605M1-0450L Harwin 1: $56.11 85In Stock	Mfr. Part # M300-MC30605M1-0450L Mouser Part # 855-M300MC3605M1450L	Harwin	Rectangular Cable Assemblies M300 3MM M/L CA 06 450MM 18AWG DIL Learn More about Harwin m300	Datasheet	85In Stock	$56.11 $47.83 $45.18 $43.62 View $41.31 $38.00 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 M/L CA 03 450MM 18AWG SIL M300-MC70305M1-0450L Harwin 1: $40.96 67In Stock	Mfr. Part # M300-MC70305M1-0450L Mouser Part # 855-M300MC7305M1450L	Harwin	Rectangular Cable Assemblies M300 3MM M/L CA 03 450MM 18AWG SIL Learn More about Harwin m300	Datasheet	67In Stock	$40.96 $34.80 $32.62 $31.54 View $30.49 $30.25 $29.28 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 06 300MM 22AWG DIL M300-FC10605F2-0450L Harwin 1: $68.22 71In Stock	Mfr. Part # M300-FC10605F2-0450L Mouser Part # 855-M300FC1605F2450L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 06 300MM 22AWG DIL Learn More about Harwin m300	Datasheet	71In Stock	$68.22 $58.06 $53.73 $49.35 View $46.22 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 10 150MM 18AWG DIL M300-FC21005F2-0150L Harwin 1: $63.61 113In Stock 20Expected 12/1/2026	Mfr. Part # M300-FC21005F2-0150L Mouser Part # 855-M300FC2105F2150L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 10 150MM 18AWG DIL Learn More about Harwin m300	Datasheet	113In Stock 20Expected 12/1/2026	$63.61 $54.15 $50.27 $48.49 View $46.18 $43.10 Quote	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Socket	10 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: $57.82 100In Stock	Mfr. Part # M300-FC20605F2-0300L Mouser Part # 855-M300FC2605F2300L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 06 300MM 18AWG DIL Learn More about Harwin m300	Datasheet	100In Stock	$57.82 $49.30 $46.64 $45.07 View $43.28 $39.16	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 10 450MM 20AWG DIL M300-FC31005F2-0450L Harwin 1: $87.93 70In Stock	Mfr. Part # M300-FC31005F2-0450L Mouser Part # 855-M300FC3105F2450L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 10 450MM 20AWG DIL Learn More about Harwin m300	Datasheet	70In Stock	$87.93 $74.75 $70.50 $68.03 View $64.34 $61.62 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 F/L CA 03 300MM 22AWG SIL M300-FC50305F2-0450L Harwin 1: $47.33 139In Stock	Mfr. Part # M300-FC50305F2-0450L Mouser Part # 855-M300FC5305F2450L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 03 300MM 22AWG SIL Learn More about Harwin m300	Datasheet	139In Stock	$47.33 $40.22 $37.47 $36.14 View $35.11 $32.25 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 HEX SPACER USE WITH M3 SCREW M300-MC50305M1-0150L Harwin 1: $33.55 80In Stock	Mfr. Part # M300-MC50305M1-0150L Mouser Part # 855-M300MC5305M1150L	Harwin	Rectangular Cable Assemblies M300 3mm HEX SPACER USE WITH M3 SCREW Learn More about Harwin m300	Datasheet	80In Stock	$33.55 $28.51 $26.60 $25.44 View $24.23 $22.78 $21.63 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 06 150MM 22AWG DIL M300-FC10605F2-0300L Harwin 1: $57.42 2In Stock 260On Order	Mfr. Part # M300-FC10605F2-0300L Mouser Part # 855-M300FC1605F2300L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 06 150MM 22AWG DIL Learn More about Harwin m300	Datasheet	2In Stock 260On Order On Order Ship Dates Mfr. #: M300-FC10605F2-0300L Stock: 2 Can Ship Immediately On Order: 50 Expected 11/24/2026 210 Expected 12/1/2026 Factory Lead-Time: 9 Weeks	$57.42 $48.84 $45.44 $43.82 View $41.73 $38.90 Quote	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Socket	6 Position	No Connector	Female	300 mm	18 AWG
Rectangular Cable Assemblies M300 36+36 DIL VERTICAL PIN HEADER TIN M300-FC50305F2-0150L Harwin 1: $34.46 52In Stock 100Expected 1/5/2027	Mfr. Part # M300-FC50305F2-0150L Mouser Part # 855-M300FC5305F2150L	Harwin	Rectangular Cable Assemblies M300 36+36 DIL VERTICAL PIN HEADER TIN Learn More about Harwin m300	Datasheet	52In Stock 100Expected 1/5/2027	$34.46 $29.30 $27.12 $26.16 View $24.28 $22.80 $21.68 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 150MM 20AWG SIL M300-FC70305F2-0150L Harwin 1: $29.48 83In Stock	Mfr. Part # M300-FC70305F2-0150L Mouser Part # 855-M300FC7305F2150L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 03 150MM 20AWG SIL Learn More about Harwin m300	Datasheet	83In Stock	$29.48 $26.59 $25.57 $25.31 View $23.79 $22.74 $22.01	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 03 300MM 20AWG SIL M300-FC70305F2-0300L Harwin 1: $40.47 18In Stock	Mfr. Part # M300-FC70305F2-0300L Mouser Part # 855-M300FC7305F2300L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 03 300MM 20AWG SIL Learn More about Harwin m300	Datasheet	18In Stock	$40.47 $34.40 $32.72 $31.15 View $29.65 $27.81	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: $45.29 31In Stock	Mfr. Part # M300-MC10605M1-0150L Mouser Part # 855-M300MC1605M1150L	Harwin	Rectangular Cable Assemblies M300 3MM M/L CA 03 450MM 22AWG SIL Learn More about Harwin m300	Datasheet	31In Stock	$45.29 $38.48 $35.87 $34.63 View $32.99 $30.93 $30.25 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: $48.74 100In Stock 537On Order	Mfr. Part # M300-FC10605F2-0150L Mouser Part # 855-M300FC1605F2150L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 03 450MM 22AWG SIL Learn More about Harwin m300	Datasheet	100In Stock 537On Order On Order Ship Dates Mfr. #: M300-FC10605F2-0150L Stock: 100 Can Ship Immediately On Order: 157 Expected 10/30/2026 380 Expected 12/17/2026 Factory Lead-Time: 9 Weeks	$48.74 $41.41 $38.45 $37.09 View $35.32 $33.11 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 10 300MM 22AWG DIL M300-FC11005F2-0450L Harwin 1: $110.64 91Expected 1/12/2027	Mfr. Part # M300-FC11005F2-0450L Mouser Part # 855-M300FC1105F2450L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 10 300MM 22AWG DIL Learn More about Harwin m300	Datasheet	91Expected 1/12/2027	$110.64 $94.89 $92.05 $84.71 View $79.98 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 150MM 20AWG DIL M300-FC30605F2-0150L Harwin 1: $44.59 100Expected 1/5/2027	Mfr. Part # M300-FC30605F2-0150L Mouser Part # 855-M300FC3605F2150L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 06 150MM 20AWG DIL Learn More about Harwin m300	Datasheet	100Expected 1/5/2027	$44.59 $37.88 $35.31 $34.10 View $32.50 $30.47 $29.77 Quote	Min.: 1 Mult.: 1	M300	Discrete Wire Cable Assemblies	Socket	6 Position	No Connector	Female	150 mm	22 AWG
Rectangular Cable Assemblies M300 3MM F/L CA 06 450MM 18AWG DIL M300-FC30605F2-0450L Harwin 1: $63.12 100Expected 2/2/2027	Mfr. Part # M300-FC30605F2-0450L Mouser Part # 855-M300FC3605F2450L	Harwin	Rectangular Cable Assemblies M300 3MM F/L CA 06 450MM 18AWG DIL Learn More about Harwin m300	Datasheet	100Expected 2/2/2027	$63.12 $53.73 $49.89 $48.14 View $47.94 $42.76 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 10 150MM 22AWG DIL M300-FC11005F2-0300L Harwin 100: $66.90 Non-Stocked Lead-Time 9 Weeks	Mfr. Part # M300-FC11005F2-0300L Mouser Part # 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	$66.90 $64.68 View Quote	Min.: 100 Mult.: 10	M300	Discrete Wire Cable Assemblies	Socket	10 Position	No Connector	Female	300 mm	18 AWG

M300 3.00mm Power Connectors

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