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CRC (Compact Robotic Connectors) I/O Connectors

Molex CRC (Compact Robotic Connectors) I/O Connector System provides a compact solution for small industrial robotics and factory automation equipment. The shielded rectangular I/O connectors provide 7.0A to 15.0A of signal/power in up to 50-circuits. The panel-mount connectors feature a compact design that takes up approximately 1/15th the space of industry-standard duty connectors. Terminal housings can be easily snapped into panel-mount shells without any tools making field installation and maintenance fast and easy. Molex CRC Connectors are delivered in kit form for easy assembly and housings and shells can accept either male or female inserts for maximum design flexibility.

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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.
I/O Connectors CRC Shielded Rectangular I/O Plug Assy. Set, Male Terminal, Sig, 12 Pos., Polarization Type Standard, Lead-Free 55836-1270 Molex 1: $38.78 510In Stock	Mfr. Part # 55836-1270 Mouser Part # 538-55836-1270	Molex	I/O Connectors CRC Shielded Rectangular I/O Plug Assy. Set, Male Terminal, Sig, 12 Pos., Polarization Type Standard, Lead-Free Learn More about Molex compact robotic connectors	Datasheet	510In Stock	$38.78 $32.94 $30.88 $29.50 View $27.07 $25.38	Min.: 1 Mult.: 1
Headers & Wire Housings CRC Sig Female Terminal, Lead-Free, Loose, Gold (Au) Pltg 56121-8528 Molex 1: $0.42 27,737In Stock	Mfr. Part # 56121-8528 Mouser Part # 538-56121-8528	Molex	Headers & Wire Housings CRC Sig Female Terminal, Lead-Free, Loose, Gold (Au) Pltg Learn More about Molex compact robotic connectors	Datasheet	27,737In Stock	$0.42 $0.357 $0.318 $0.303 View $0.271 $0.257 $0.238 $0.236	Min.: 1 Mult.: 1
Headers & Wire Housings CRC Sig Male Terminal, Lead-Free, Loose, Gold (Au) Pltg 56118-8328 Molex 1: $0.37 15,740In Stock	Mfr. Part # 56118-8328 Mouser Part # 538-56118-8328	Molex	Headers & Wire Housings CRC Sig Male Terminal, Lead-Free, Loose, Gold (Au) Pltg Learn More about Molex compact robotic connectors	Datasheet	15,740In Stock	$0.37 $0.319 $0.257 $0.231 View $0.205 $0.19	Min.: 1 Mult.: 1
Headers & Wire Housings CRC Sig Female Terminal, Lead-Free, Gold (Au) Pltg, 28-24 AWG, Bag 56120-8528 Molex 1: $0.32 13,667In Stock	Mfr. Part # 56120-8528 Mouser Part # 538-56120-8528	Molex	Headers & Wire Housings CRC Sig Female Terminal, Lead-Free, Gold (Au) Pltg, 28-24 AWG, Bag Learn More about Molex compact robotic connectors	Datasheet	13,667In Stock	$0.32 $0.285 $0.266 $0.257 View $0.241 $0.231 $0.212	Min.: 1 Mult.: 1
I/O Connectors CRC Sig Female Terminal, Lead-Free, Loose, Gold (Au) Pltg 56120-8728 Molex 1: $0.57 7,535In Stock	Mfr. Part # 56120-8728 Mouser Part # 538-56120-8728	Molex	I/O Connectors CRC Sig Female Terminal, Lead-Free, Loose, Gold (Au) Pltg Learn More about Molex compact robotic connectors	Datasheet	7,535In Stock	$0.57 $0.485 $0.432 $0.412 View $0.368 $0.349 $0.323 $0.27	Min.: 1 Mult.: 1
Headers & Wire Housings CRC Sig Female Terminal, Lead-Free, Chain, Gold (Au) Pltg 56121-8428 Molex 6,000: $0.188 18,000In Stock	Mfr. Part # 56121-8428 Mouser Part # 538-56121-8428	Molex	Headers & Wire Housings CRC Sig Female Terminal, Lead-Free, Chain, Gold (Au) Pltg Learn More about Molex compact robotic connectors	Datasheet	18,000In Stock	Reel $0.188 $0.18 $0.171 $0.161	Min.: 6,000 Mult.: 6,000 : 6,000
I/O Connectors CRC Shielded Rectangular I/O Recept. Housing for Female Terminal, Sig, 50 Pos., Polarization Type Standard 51238-5011 Molex 1: $10.25 230In Stock	Mfr. Part # 51238-5011 Mouser Part # 538-51238-5011	Molex	I/O Connectors CRC Shielded Rectangular I/O Recept. Housing for Female Terminal, Sig, 50 Pos., Polarization Type Standard Learn More about Molex compact robotic connectors	Datasheet	230In Stock	$10.25 $9.39 $9.09 $8.80 View $8.49 $8.21 $7.75 $7.60	Min.: 1 Mult.: 1
I/O Connectors CRC Shielded Rectangular I/O Recept. Shell, Panel Mount, Sig, 20 Pos., Rear Mount Type 56377-2001 Molex 1: $14.24 196In Stock	Mfr. Part # 56377-2001 Mouser Part # 538-56377-2001	Molex	I/O Connectors CRC Shielded Rectangular I/O Recept. Shell, Panel Mount, Sig, 20 Pos., Rear Mount Type Learn More about Molex compact robotic connectors	Datasheet	196In Stock	$14.24 $12.40 $11.44	Min.: 1 Mult.: 1
I/O Connectors CRC Shielded Rectangular I/O Recept. Housing for Male Terminal, Sig, 12 Pos., Polarization Type Standard 51233-1211 Molex 1: $7.88 331In Stock	Mfr. Part # 51233-1211 Mouser Part # 538-51233-1211	Molex	I/O Connectors CRC Shielded Rectangular I/O Recept. Housing for Male Terminal, Sig, 12 Pos., Polarization Type Standard Learn More about Molex compact robotic connectors	Datasheet	331In Stock	$7.88 $5.95 $5.79 $5.41 View $5.13 $4.83 $4.75 $4.66 $4.63	Min.: 1 Mult.: 1
I/O Connectors CRC Shielded Rectangular I/O Recept. Housing for Female Terminal, Sig, 12 Pos., Polarization Type Standard 51238-1211 Molex 1: $5.92 539In Stock	Mfr. Part # 51238-1211 Mouser Part # 538-51238-1211	Molex	I/O Connectors CRC Shielded Rectangular I/O Recept. Housing for Female Terminal, Sig, 12 Pos., Polarization Type Standard Learn More about Molex compact robotic connectors	Datasheet	539In Stock	$5.92 $5.03 $4.72 $4.49 View $4.28 $3.23 $3.15	Min.: 1 Mult.: 1
I/O Connectors CRC Shielded Rectangular I/O Recept. Housing for Male Terminal, Sig, 50 Pos., Polarization Type Standard 51233-5011 Molex 1: $14.75 123In Stock	Mfr. Part # 51233-5011 Mouser Part # 538-51233-5011	Molex	I/O Connectors CRC Shielded Rectangular I/O Recept. Housing for Male Terminal, Sig, 50 Pos., Polarization Type Standard Learn More about Molex compact robotic connectors	Datasheet	123In Stock	$14.75 $12.05 $11.56 $11.14 View $9.96 $9.71 $9.57	Min.: 1 Mult.: 1
I/O Connectors CRC Shielded Rectangular I/O Recept. Assy. Set, Wire-to-Wire, Male Terminal, Sig, 20 Pos., Polarization Type Standard, Lead-Free 55837-2070 Molex 1: $56.85 1In Stock	Mfr. Part # 55837-2070 Mouser Part # 538-55837-2070	Molex	I/O Connectors CRC Shielded Rectangular I/O Recept. Assy. Set, Wire-to-Wire, Male Terminal, Sig, 20 Pos., Polarization Type Standard, Lead-Free Learn More about Molex compact robotic connectors	Datasheet	1In Stock	$56.85 $46.27 $43.03 $41.43 View $40.49 $38.10	Min.: 1 Mult.: 1
I/O Connectors CRC Shielded Rectangular I/O Recept. Shell, Panel Mount, Sig, 50 Pos., Front Mount Type 56377-5000 Molex 1: $17.80 224In Stock	Mfr. Part # 56377-5000 Mouser Part # 538-56377-5000	Molex	I/O Connectors CRC Shielded Rectangular I/O Recept. Shell, Panel Mount, Sig, 50 Pos., Front Mount Type Learn More about Molex compact robotic connectors	Datasheet	224In Stock	$17.80 $16.46 $15.85 $15.79 View $15.48 $15.40 Quote	Min.: 1 Mult.: 1
I/O Connectors CRC Shielded Rectangular I/O Recept. Shell, Panel Mount, Sig, 50 Pos., Rear Mount Type 56377-5001 Molex 1: $24.19 156In Stock	Mfr. Part # 56377-5001 Mouser Part # 538-56377-5001	Molex	I/O Connectors CRC Shielded Rectangular I/O Recept. Shell, Panel Mount, Sig, 50 Pos., Rear Mount Type Learn More about Molex compact robotic connectors	Datasheet	156In Stock	$24.19 $20.93 $19.57 $18.42 View $17.38 $16.69 $16.06	Min.: 1 Mult.: 1
I/O Connectors CRC Shielded Rectangular I/O Plug Assy. Set, Female Terminal, Sig, 20 Pos., Polarization Type Standard, Lead-Free 54332-2070 Molex 1: $36.52 37In Stock	Mfr. Part # 54332-2070 Mouser Part # 538-54332-2070	Molex	I/O Connectors CRC Shielded Rectangular I/O Plug Assy. Set, Female Terminal, Sig, 20 Pos., Polarization Type Standard, Lead-Free Learn More about Molex compact robotic connectors	Datasheet	37In Stock	$36.52 $32.32 $30.76 $30.32 View $28.86 $27.96	Min.: 1 Mult.: 1
I/O Connectors CRC Sig Female Terminal, Lead-Free, Loose, Gold (Au) Pltg 56121-8728 Molex 1: $0.45 4,145In Stock	Mfr. Part # 56121-8728 Mouser Part # 538-56121-8728	Molex	I/O Connectors CRC Sig Female Terminal, Lead-Free, Loose, Gold (Au) Pltg Learn More about Molex compact robotic connectors	Datasheet	4,145In Stock	$0.45 $0.386 $0.345 $0.329 View $0.293 $0.278 $0.249 $0.231	Min.: 1 Mult.: 1
I/O Connectors CRC Shielded Rectangular I/O Plug Assy. Set, Male Terminal, Sig, 20 Pos., Polarization Type Standard, Lead-Free 55836-2070 Molex 1: $34.48 229In Stock	Mfr. Part # 55836-2070 Mouser Part # 538-55836-2070	Molex	I/O Connectors CRC Shielded Rectangular I/O Plug Assy. Set, Male Terminal, Sig, 20 Pos., Polarization Type Standard, Lead-Free Learn More about Molex compact robotic connectors	Datasheet	229In Stock	$34.48 $31.14 $29.19 $27.78 View $25.39 $22.17 $21.98 Quote	Min.: 1 Mult.: 1
I/O Connectors CRC Shielded Rectangular I/O Recept. Housing for Female Terminal, Sig, 30 Pos., Polarization Type Standard 51238-3011 Molex 1: $9.10 580In Stock 1,800On Order	Mfr. Part # 51238-3011 Mouser Part # 538-51238-3011	Molex	I/O Connectors CRC Shielded Rectangular I/O Recept. Housing for Female Terminal, Sig, 30 Pos., Polarization Type Standard Learn More about Molex compact robotic connectors	Datasheet	580In Stock 1,800On Order On Order Ship Dates Mfr. #: 51238-3011 Stock: 580 Can Ship Immediately On Order: 600 Expected 2/23/2027 1,200 Expected 3/4/2027 Factory Lead-Time: 21 Weeks	$9.10 $8.19 $7.72 $7.52 View $7.29 $6.52 $6.13 $5.19 Quote	Min.: 1 Mult.: 1
Headers & Wire Housings CRC Sig Male Terminal, Lead-Free, Chain, Gold (Au) Pltg 56118-8228 Molex 7,000: $0.183 21,000In Stock	Mfr. Part # 56118-8228 Mouser Part # 538-56118-8228	Molex	Headers & Wire Housings CRC Sig Male Terminal, Lead-Free, Chain, Gold (Au) Pltg Learn More about Molex compact robotic connectors	Datasheet	21,000In Stock	Reel $0.183 $0.171 $0.162 $0.158	Min.: 7,000 Mult.: 7,000 : 7,000
I/O Connectors CRC Sig Male Terminal, Lead-Free, Chain, Gold (Au) Pltg 56119-8228 Molex 6,000: $0.185 12,000In Stock	Mfr. Part # 56119-8228 Mouser Part # 538-56119-8228	Molex	I/O Connectors CRC Sig Male Terminal, Lead-Free, Chain, Gold (Au) Pltg Learn More about Molex compact robotic connectors	Datasheet	12,000In Stock	Reel $0.185 $0.178	Min.: 6,000 Mult.: 6,000 : 6,000
Headers & Wire Housings CRC Sig Female Terminal, Lead-Free, Gold (Au) Pltg, 28-24 AWG, Reel 56120-8428 Molex 7,000: $0.172 63,000In Stock	Mfr. Part # 56120-8428 Mouser Part # 538-56120-8428	Molex	Headers & Wire Housings CRC Sig Female Terminal, Lead-Free, Gold (Au) Pltg, 28-24 AWG, Reel Learn More about Molex compact robotic connectors	Datasheet	63,000In Stock	Reel $0.172 $0.16 $0.152 $0.149	Min.: 7,000 Mult.: 7,000 : 7,000
I/O Connectors CRC Shielded Rectangular I/O Plug Assy. Set, Male Terminal, Pwr, 4 Pos., Polarization Type A, Lead-Free 55887-0471 Molex 1: $37.40 8In Stock	Mfr. Part # 55887-0471 Mouser Part # 538-55887-0471	Molex	I/O Connectors CRC Shielded Rectangular I/O Plug Assy. Set, Male Terminal, Pwr, 4 Pos., Polarization Type A, Lead-Free Learn More about Molex compact robotic connectors	Datasheet	8In Stock	$37.40 $31.75 $28.83 $27.45 View $26.67 $25.13	Min.: 1 Mult.: 1
I/O Connectors CRC Shielded Rectangular I/O Plug Assy. Set, Female Terminal, Pwr, 4 Pos., Polarization Type A, Lead-Free 51297-0471 Molex 1: $18.23 6In Stock	Mfr. Part # 51297-0471 Mouser Part # 538-51297-0471	Molex	I/O Connectors CRC Shielded Rectangular I/O Plug Assy. Set, Female Terminal, Pwr, 4 Pos., Polarization Type A, Lead-Free Learn More about Molex compact robotic connectors	Datasheet	6In Stock	$18.23 $15.49 $14.33 $13.67 View $12.39 $11.80 $11.50	Min.: 1 Mult.: 1
I/O Connectors CRC Shielded Rectangular I/O Plug Assy. Set, Female Terminal, With Shield Cover, Sig, 50 Pos., Polarization Type Standard 54332-5001 Molex 1: $77.11 9In Stock 80Expected 11/3/2026	Mfr. Part # 54332-5001 Mouser Part # 538-54332-5001	Molex	I/O Connectors CRC Shielded Rectangular I/O Plug Assy. Set, Female Terminal, With Shield Cover, Sig, 50 Pos., Polarization Type Standard Learn More about Molex compact robotic connectors	Datasheet	9In Stock 80Expected 11/3/2026	$77.11 $63.72 $58.13 $55.35 $53.79	Min.: 1 Mult.: 1
I/O Connectors CRC Shielded Rectangular I/O Plug Assy. Set, Male Terminal, Sig, 30 Pos., Polarization Type Standard, Lead-Free 55836-3070 Molex 1: $56.56 7In Stock	Mfr. Part # 55836-3070 Mouser Part # 538-55836-3070	Molex	I/O Connectors CRC Shielded Rectangular I/O Plug Assy. Set, Male Terminal, Sig, 30 Pos., Polarization Type Standard, Lead-Free Learn More about Molex compact robotic connectors	Datasheet	7In Stock	$56.56 $48.07 $44.48 $42.91 View $40.86 $38.31 Quote	Min.: 1 Mult.: 1

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CRC (Compact Robotic Connectors) I/O Connectors

Types of Connectors