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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 Compact Robot Conn R ecSocketHsgAssy50Ck 51238-5011 Molex 1: $11.14 230In Stock	Mfr. Part No. 51238-5011 Mouser Part No 538-51238-5011	Molex	I/O Connectors Compact Robot Conn R ecSocketHsgAssy50Ck Learn More about Molex compact robotic connectors	Datasheet	230In Stock	$11.14 $10.08 $9.73 $9.44 View $8.80 $8.21 $7.92 $7.60	Min.: 1 Mult.: 1
I/O Connectors Compact Robot Conn R Conn Rec Shell 20Ckt 56377-2001 Molex 1: $15.69 197In Stock	Mfr. Part No. 56377-2001 Mouser Part No 538-56377-2001	Molex	I/O Connectors Compact Robot Conn R Conn Rec Shell 20Ckt Learn More about Molex compact robotic connectors	Datasheet	197In Stock	$15.69 $14.49 $14.08 $13.97 View $11.69 $11.63 $11.43	Min.: 1 Mult.: 1
Headers & Wire Housings Compact Robot Crimp Socket Loose SAu Plt 56121-8528 Molex 1: $0.42 28,644In Stock	Mfr. Part No. 56121-8528 Mouser Part No 538-56121-8528	Molex	Headers & Wire Housings Compact Robot Crimp Socket Loose SAu Plt Learn More about Molex compact robotic connectors	Datasheet	28,644In Stock	$0.42 $0.357 $0.319 $0.303 View $0.271 $0.257 $0.238 $0.236	Min.: 1 Mult.: 1
I/O Connectors Compact Robot Conn R ec Pin HsgAssy 12Ckt 51233-1211 Molex 1: $8.13 329In Stock	Mfr. Part No. 51233-1211 Mouser Part No 538-51233-1211	Molex	I/O Connectors Compact Robot Conn R ec Pin HsgAssy 12Ckt Learn More about Molex compact robotic connectors	Datasheet	329In Stock	$8.13 $6.51 $6.26 $5.95 View $5.64 $5.22 $4.98 $4.74 $4.66	Min.: 1 Mult.: 1
I/O Connectors CompactRobotConn Rec Socket HsgAssy 12Ckt 51238-1211 Molex 1: $5.92 539In Stock	Mfr. Part No. 51238-1211 Mouser Part No 538-51238-1211	Molex	I/O Connectors CompactRobotConn Rec Socket HsgAssy 12Ckt Learn More about Molex compact robotic connectors	Datasheet	539In Stock	$5.92 $5.03 $4.72 $4.49 View $4.28 $3.75 $3.44 $3.35	Min.: 1 Mult.: 1
Headers & Wire Housings Compact Robot Crimp p Socket Loose W/Plt 56120-8528 Molex 1: $0.40 15,148In Stock	Mfr. Part No. 56120-8528 Mouser Part No 538-56120-8528	Molex	Headers & Wire Housings Compact Robot Crimp p Socket Loose W/Plt Learn More about Molex compact robotic connectors	Datasheet	15,148In Stock	$0.40 $0.347 $0.315 $0.293 View $0.27 $0.244 $0.223 $0.219	Min.: 1 Mult.: 1
Headers & Wire Housings Compact Robot Crimp rimp Pin Loose W/Plt 56118-8328 Molex 1: $0.42 15,865In Stock	Mfr. Part No. 56118-8328 Mouser Part No 538-56118-8328	Molex	Headers & Wire Housings Compact Robot Crimp rimp Pin Loose W/Plt Learn More about Molex compact robotic connectors	Datasheet	15,865In Stock	$0.42 $0.356 $0.318 $0.303 View $0.27 $0.233 $0.221 $0.219 $0.215	Min.: 1 Mult.: 1
I/O Connectors Compact Robot Conn Rec Shell 50Ckt 56377-5000 Molex 1: $20.01 224In Stock	Mfr. Part No. 56377-5000 Mouser Part No 538-56377-5000	Molex	I/O Connectors Compact Robot Conn Rec Shell 50Ckt Learn More about Molex compact robotic connectors	Datasheet	224In Stock	$20.01 $17.99 $17.17 $16.85 View $16.51 $16.40	Min.: 1 Mult.: 1
I/O Connectors Compact Robot Conn R ec Pin Hsg Assy50Ckt 51233-5011 Molex 1: $14.31 123In Stock	Mfr. Part No. 51233-5011 Mouser Part No 538-51233-5011	Molex	I/O Connectors Compact Robot Conn R ec Pin Hsg Assy50Ckt Learn More about Molex compact robotic connectors	Datasheet	123In Stock	$14.31 $14.07 $13.19 $12.56 View $12.14 $9.96 $9.72	Min.: 1 Mult.: 1
I/O Connectors Compact Robot Plg Socket Assy 20Ckt 54332-2070 Molex 1: $36.52 37In Stock	Mfr. Part No. 54332-2070 Mouser Part No 538-54332-2070	Molex	I/O Connectors Compact Robot Plg Socket Assy 20Ckt Learn More about Molex compact robotic connectors	Datasheet	37In Stock	$36.52 $32.32 $30.76 $30.32 View $28.87 $27.96	Min.: 1 Mult.: 1
I/O Connectors Compact Robot Crimp Socket Chain SAu Plt 56121-8728 Molex 1: $0.45 4,145In Stock	Mfr. Part No. 56121-8728 Mouser Part No 538-56121-8728	Molex	I/O Connectors Compact Robot Crimp Socket Chain SAu Plt Learn More about Molex compact robotic connectors	Datasheet	4,145In Stock	$0.45 $0.386 $0.345 $0.329 View $0.293 $0.278 $0.258 $0.253 $0.224	Min.: 1 Mult.: 1
I/O Connectors Compact Robot Conn R Conn Rec Shell 50Ckt 56377-5001 Molex 1: $24.86 156In Stock	Mfr. Part No. 56377-5001 Mouser Part No 538-56377-5001	Molex	I/O Connectors Compact Robot Conn R Conn Rec Shell 50Ckt Learn More about Molex compact robotic connectors	Datasheet	156In Stock	$24.86 $21.38 $20.00 $18.91 View $17.89 $17.19 $16.44	Min.: 1 Mult.: 1
I/O Connectors Compact Robot Conn P lg Socket Assy 50Ck 54332-5001 Molex 1: $77.95 35In Stock 80Expected 09/10/2026	Mfr. Part No. 54332-5001 Mouser Part No 538-54332-5001	Molex	I/O Connectors Compact Robot Conn P lg Socket Assy 50Ck Learn More about Molex compact robotic connectors	Datasheet	35In Stock 80Expected 09/10/2026	$77.95 $66.26 $63.40 $55.35 $53.79	Min.: 1 Mult.: 1
I/O Connectors COMPACT ROBOT PLG PIN SET 20P 55836-2070 Molex 1: $34.33 235In Stock	Mfr. Part No. 55836-2070 Mouser Part No 538-55836-2070	Molex	I/O Connectors COMPACT ROBOT PLG PIN SET 20P Learn More about Molex compact robotic connectors	Datasheet	235In Stock	$34.33 $31.14 $29.19 $27.78 View $22.49 $21.74 $21.72 Quote	Min.: 1 Mult.: 1
I/O Connectors Compact Robot Plg Pin Set 30Ckt 55836-3070 Molex 1: $56.56 49In Stock 80Expected 05/11/2026	Mfr. Part No. 55836-3070 Mouser Part No 538-55836-3070	Molex	I/O Connectors Compact Robot Plg Pin Set 30Ckt Learn More about Molex compact robotic connectors	Datasheet	49In Stock 80Expected 05/11/2026	$56.56 $48.07 $44.48 $42.92 View $40.86 $38.31	Min.: 1 Mult.: 1
Headers & Wire Housings CRC M TERM GLD 18AWG REEL OF 7000 56118-8228 Molex 7,000: $0.183 21,000In Stock	Mfr. Part No. 56118-8228 Mouser Part No 538-56118-8228	Molex	Headers & Wire Housings CRC M TERM GLD 18AWG REEL OF 7000 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 M TERM GLD 18AWG REEL OF 6000 56119-8228 Molex 6,000: $0.185 12,000In Stock	Mfr. Part No. 56119-8228 Mouser Part No 538-56119-8228	Molex	I/O Connectors CRC M TERM GLD 18AWG REEL OF 6000 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 F TERM GLD 18AWG REEL OF 7000 56120-8428 Molex 7,000: $0.172 70,000In Stock	Mfr. Part No. 56120-8428 Mouser Part No 538-56120-8428	Molex	Headers & Wire Housings CRC F TERM GLD 18AWG REEL OF 7000 Learn More about Molex compact robotic connectors	Datasheet	70,000In Stock	Reel $0.172 $0.16 $0.152 $0.149	Min.: 7,000 Mult.: 7,000 : 7,000
I/O Connectors Compact Robot Powe Plug Pin Set 4Ckt 55887-0471 Molex 1: $37.40 8In Stock	Mfr. Part No. 55887-0471 Mouser Part No 538-55887-0471	Molex	I/O Connectors Compact Robot Powe Plug Pin Set 4Ckt 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 Compact Robot Conn R Conn Rec Shell 30Ckt 56377-3001 Molex 1: $17.06 20In Stock 240Expected 04/11/2026	Mfr. Part No. 56377-3001 Mouser Part No 538-56377-3001	Molex	I/O Connectors Compact Robot Conn R Conn Rec Shell 30Ckt Learn More about Molex compact robotic connectors	Datasheet	20In Stock 240Expected 04/11/2026	$17.06 $16.26 $14.24 $14.06 View $12.92 $12.55 $12.22	Min.: 1 Mult.: 1
I/O Connectors Compact Robot Power Plg Socket Set 4Ckt 51297-0471 Molex 1: $18.23 6In Stock	Mfr. Part No. 51297-0471 Mouser Part No 538-51297-0471	Molex	I/O Connectors Compact Robot Power Plg Socket Set 4Ckt Learn More about Molex compact robotic connectors	Datasheet	6In Stock	$18.23 $15.49 $14.33 $13.83 View $12.93 $12.13 $11.64 $11.50	Min.: 1 Mult.: 1
I/O Connectors Compact Robot Plg Pi ot Plg Pin Set 12Ck 55836-1270 Molex 1: $38.78 30In Stock 480On Order	Mfr. Part No. 55836-1270 Mouser Part No 538-55836-1270	Molex	I/O Connectors Compact Robot Plg Pi ot Plg Pin Set 12Ck Learn More about Molex compact robotic connectors	Datasheet	30In Stock 480On Order On Order Ship Dates Mfr. No: 55836-1270 Stock: 30 Can Dispatch Immediately On Order: 120 Expected 20/10/2026 360 Expected 22/10/2026 Factory Lead Time: 17 Weeks	$38.78 $32.94 $30.88 $29.50 View $27.07 $25.38	Min.: 1 Mult.: 1
I/O Connectors Compact RobotPower W/WTypePinSet20Ckt 55837-2070 Molex 1: $56.85 1In Stock	Mfr. Part No. 55837-2070 Mouser Part No 538-55837-2070	Molex	I/O Connectors Compact RobotPower W/WTypePinSet20Ckt Learn More about Molex compact robotic connectors	Datasheet	1In Stock	$56.85 $47.70 $44.24 $42.67 View $40.64 $38.10	Min.: 1 Mult.: 1
I/O Connectors Compact Robot Crimp rimp Pin Loose W/Plt 56116-8328 Molex 1: $0.40 883In Stock	Mfr. Part No. 56116-8328 Mouser Part No 538-56116-8328	Molex	I/O Connectors Compact Robot Crimp rimp Pin Loose W/Plt Learn More about Molex compact robotic connectors	Datasheet	883In Stock	$0.40 $0.344 $0.307 $0.292 View $0.261 $0.247 $0.229 $0.206 $0.198	Min.: 1 Mult.: 1
I/O Connectors Compact Robot Crimp rimp Pin Loose W/Plt 56119-8328 Molex 1: $0.65 3,086In Stock	Mfr. Part No. 56119-8328 Mouser Part No 538-56119-8328	Molex	I/O Connectors Compact Robot Crimp rimp Pin Loose W/Plt Learn More about Molex compact robotic connectors	Datasheet	3,086In Stock	$0.65 $0.551 $0.492 $0.469 View $0.418 $0.397 $0.368 $0.364	Min.: 1 Mult.: 1

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