Heavy Duty Power Connectors

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MultiCat High-Power Connector System

Molex MultiCat Power Connector System with precision machined contacts quickly mate and ensure superior durability and proper connection via connector position assurance (CPA). This CPA makes the MultiCat System effective in multiple industries. The MultiCat Power Connector System features lightweight and compact wire-to-wire and wire-to-board configurations while accommodating 18AWG to 8AWG wires.

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Part #

Heavy Duty Power Connectors MultiCat Inline Plg Hsg 4Ckt Key A Blk

201840-0040
Molex
1: S/40.33
2,249In Stock

Mfr. Part #
201840-0040

Mouser Part #
538-201840-0040

Molex

Heavy Duty Power Connectors MultiCat Inline Plg Hsg 4Ckt Key A Blk

Learn More

Datasheet

2,249In Stock

S/40.33

S/33.01

S/31.61

S/30.60

View

Min.: 1
Mult.: 1

201840

Connectors

4 Position

Crimp

Polyetherimide (PEI)

MultiCat

Heavy Duty Power Connectors MultiCat Vert Header 3 Circ GRY Key B

201842-1031
Molex
1: S/65.51
131In Stock

Mfr. Part #
201842-1031

Mouser Part #
538-201842-1031

Molex

Heavy Duty Power Connectors MultiCat Vert Header 3 Circ GRY Key B

Datasheet

131In Stock

S/65.51

S/55.70

S/55.04

S/54.22

View

Min.: 1
Mult.: 1

201842

Connectors

40 A

3 Position

Solder

1 kV

Pin (Male)

Polyetherimide (PEI)

Gold

Copper Alloy

MultiCat

Heavy Duty Power Connectors MultiCat Inline Rcpt Hsg 4Ckt Key B Gry

201841-0041
Molex
1: S/49.08
305In Stock

Mfr. Part #
201841-0041

Mouser Part #
538-201841-0041

Molex

Heavy Duty Power Connectors MultiCat Inline Rcpt Hsg 4Ckt Key B Gry

Datasheet

305In Stock

S/49.08

S/41.73

S/39.12

S/37.25

View

Min.: 1
Mult.: 1

201841

Connectors

4 Position

Crimp

Polyetherimide (PEI)

MultiCat

Heavy Duty Power Connectors MultiCat Herm BCKSHL 4 Circ 12-18AWG BLK

201844-0140
Molex
2: S/13.66
1,872In Stock

Mfr. Part #
201844-0140

Mouser Part #
538-201844-0140

Molex

Heavy Duty Power Connectors MultiCat Herm BCKSHL 4 Circ 12-18AWG BLK

Learn More

Datasheet

1,872In Stock

S/13.66

S/11.60

S/10.35

S/9.38

View

Min.: 2
Mult.: 2

201844

Backshells

Backshell

4 Position

Polyetherimide (PEI)

18 AWG

12 AWG

MultiCat

Heavy Duty Power Connectors MultiCat R/A Header 4 Circ GRY Key B

201843-1041
Molex
1: S/100.23
134In Stock

Mfr. Part #
201843-1041

Mouser Part #
538-201843-1041

Molex

Heavy Duty Power Connectors MultiCat R/A Header 4 Circ GRY Key B

Datasheet

134In Stock

S/100.23

S/85.21

S/83.22

S/79.29

View

Min.: 1
Mult.: 1

201843

Connectors

40 A

4 Position

Solder

1 kV

Pin (Male)

Polyetherimide (PEI)

Gold

Copper Alloy

MultiCat

Heavy Duty Power Connectors MultiCat Herm BCKSHL 3 Circ 12-18AWG GRY

201844-0131
Molex
1: S/14.67
1,960In Stock

Mfr. Part #
201844-0131

Mouser Part #
538-201844-0131

Molex

Heavy Duty Power Connectors MultiCat Herm BCKSHL 3 Circ 12-18AWG GRY

Datasheet

1,960In Stock

S/14.67

S/12.46

S/11.13

S/10.59

View

Min.: 1
Mult.: 1

201844

Accessories

Backshell

3 Position

Polyetherimide (PEI)

12 AWG

18 AWG

MultiCat

Heavy Duty Power Connectors MultiCat Inline Rcpt Hsg 3Ckt Key B Gry

201841-0031
Molex
1: S/42.08
689In Stock

Mfr. Part #
201841-0031

Mouser Part #
538-201841-0031

Molex

Heavy Duty Power Connectors MultiCat Inline Rcpt Hsg 3Ckt Key B Gry

Datasheet

689In Stock

S/42.08

S/35.77

S/33.51

S/31.92

View

Min.: 1
Mult.: 1

201841

Connectors

3 Position

Crimp

Polyetherimide (PEI)

MultiCat

Heavy Duty Power Connectors MultiCat Herm BCKSHL 4 Circ 8-10AWG BLK

201844-0040
Molex
1: S/13.62
520In Stock

Mfr. Part #
201844-0040

Mouser Part #
538-201844-0040

Molex

Heavy Duty Power Connectors MultiCat Herm BCKSHL 4 Circ 8-10AWG BLK

Learn More

Datasheet

520In Stock

S/13.62

S/11.56

S/10.35

S/9.85

View

Min.: 1
Mult.: 1

201844

Accessories

Backshell

4 Position

Polyetherimide (PEI)

10 AWG

8 AWG

MultiCat

Heavy Duty Power Connectors MultiCat Inline Plg Hsg 3Ckt Key A Blk

201840-0030
Molex
1: S/30.05
5,647In Stock

Mfr. Part #
201840-0030

Mouser Part #
538-201840-0030

Molex

Heavy Duty Power Connectors MultiCat Inline Plg Hsg 3Ckt Key A Blk

Learn More

Datasheet

5,647In Stock

S/30.05

S/25.34

S/24.29

S/23.55

View

Min.: 1
Mult.: 1

201840

Connectors

3 Position

Crimp

Polyetherimide (PEI)

MultiCat

Heavy Duty Power Connectors MultiCat Inline Rcpt w/CPA 4P Key B GRY

201841-0141
Molex
1: S/52.08
1,822In Stock

Mfr. Part #
201841-0141

Mouser Part #
538-201841-0141

Molex

Heavy Duty Power Connectors MultiCat Inline Rcpt w/CPA 4P Key B GRY

Datasheet

1,822In Stock

S/52.08

S/46.59

S/43.67

S/41.57

View

Min.: 1
Mult.: 1

201841

Connectors

4 Position

Crimp

Polyetherimide (PEI)

MultiCat

Heavy Duty Power Connectors MultiCat Circular Plug Hsg 3Ckt Blk

200914-0003
Molex
1: S/13.97
1,800In Stock

Mfr. Part #
200914-0003

Mouser Part #
538-200914-0003

Molex

Heavy Duty Power Connectors MultiCat Circular Plug Hsg 3Ckt Blk

Learn More

Datasheet

1,800In Stock

S/13.97

S/11.87

S/10.63

S/10.12

View

Min.: 1
Mult.: 1

200914

Connectors

3 Position

Crimp

Polyetherimide (PEI)

MultiCat

Heavy Duty Power Connectors MultiCat Circular Rcpt Hsg 3Ckt Blk

200915-0003
Molex
1: S/14.36
1,046In Stock
1,536Expected 11/5/2026

Mfr. Part #
200915-0003

Mouser Part #
538-200915-0003

Molex

Heavy Duty Power Connectors MultiCat Circular Rcpt Hsg 3Ckt Blk

Learn More

Datasheet

1,046In Stock

1,536Expected 11/5/2026

S/14.36

S/12.22

S/10.90

S/10.39

View

Min.: 1
Mult.: 1

200915

Connectors

3 Position

Crimp

Polyetherimide (PEI)

MultiCat

Heavy Duty Power Connectors MultiCat Inline Plg Hsg 3Ckt Key B Gry

201840-0031
Molex
1: S/34.64
1,396In Stock

Mfr. Part #
201840-0031

Mouser Part #
538-201840-0031

Molex

Heavy Duty Power Connectors MultiCat Inline Plg Hsg 3Ckt Key B Gry

Datasheet

1,396In Stock

S/34.64

S/31.41

S/29.97

S/29.12

View

Min.: 1
Mult.: 1

201840

Connectors

3 Position

Crimp

Polyetherimide (PEI)

MultiCat

Heavy Duty Power Connectors MultiCat Inline Plg Hsg 4Ckt Key B Gry

201840-0041
Molex
1: S/44.72
571In Stock

Mfr. Part #
201840-0041

Mouser Part #
538-201840-0041

Molex

Heavy Duty Power Connectors MultiCat Inline Plg Hsg 4Ckt Key B Gry

Datasheet

571In Stock

S/44.72

S/38.03

S/35.66

S/33.94

View

Min.: 1
Mult.: 1

201840

Connectors

4 Position

Crimp

Polyetherimide (PEI)

MultiCat

Heavy Duty Power Connectors MultiCat Inline Rcpt Hsg 3Ckt Key A Blk

201841-0030
Molex
1: S/35.50
993In Stock

Mfr. Part #
201841-0030

Mouser Part #
538-201841-0030

Molex

Heavy Duty Power Connectors MultiCat Inline Rcpt Hsg 3Ckt Key A Blk

Learn More

Datasheet

993In Stock

S/35.50

S/30.83

S/28.92

S/27.52

View

Min.: 1
Mult.: 1

201841

Connectors

3 Position

Crimp

Polyetherimide (PEI)

MultiCat

Heavy Duty Power Connectors MultiCat Inline Rcpt w/CPA 3P Key B GRY

201841-0131
Molex
1: S/45.93
1,734In Stock
768Expected 10/1/2026

Mfr. Part #
201841-0131

Mouser Part #
538-201841-0131

Molex

Heavy Duty Power Connectors MultiCat Inline Rcpt w/CPA 3P Key B GRY

Datasheet

1,734In Stock

768Expected 10/1/2026

S/45.93

S/40.40

S/37.87

S/36.04

View

Min.: 1
Mult.: 1

201841

Connectors

3 Position

Crimp

Polyetherimide (PEI)

MultiCat

Heavy Duty Power Connectors MultiCat Inline Rcpt w/CPA 4P Key A BLK

201841-0140
Molex
1: S/55.04
181In Stock
384Expected 11/5/2026

Mfr. Part #
201841-0140

Mouser Part #
538-201841-0140

Molex

Heavy Duty Power Connectors MultiCat Inline Rcpt w/CPA 4P Key A BLK

Learn More

Datasheet

181In Stock

384Expected 11/5/2026

S/55.04

S/48.31

S/46.24

S/44.10

View

Min.: 1
Mult.: 1

201841

Connectors

4 Position

Crimp

Polyetherimide (PEI)

MultiCat

Heavy Duty Power Connectors MultiCat Vert Header 3 Circ BLK Key A

201842-1030
Molex
1: S/55.00
181In Stock
405Expected 10/9/2026

Mfr. Part #
201842-1030

Mouser Part #
538-201842-1030

Molex

Heavy Duty Power Connectors MultiCat Vert Header 3 Circ BLK Key A

Learn More

Datasheet

181In Stock

405Expected 10/9/2026

S/55.00

S/48.42

S/46.17

S/43.95

View

Min.: 1
Mult.: 1

201842

Connectors

40 A

3 Position

Solder

1 kV

Pin (Male)

Polyetherimide (PEI)

Gold

Copper Alloy

MultiCat

Heavy Duty Power Connectors MultiCat Vert Header 4 Circ BLK Key A

201842-1040
Molex
1: S/66.41
121In Stock
270Expected 10/21/2026

Mfr. Part #
201842-1040

Mouser Part #
538-201842-1040

Molex

Heavy Duty Power Connectors MultiCat Vert Header 4 Circ BLK Key A

Learn More

Datasheet

121In Stock

270Expected 10/21/2026

S/66.41

S/57.76

S/54.69

S/53.25

View

Min.: 1
Mult.: 1

201842

Connectors

40 A

4 Position

Solder

1 kV

Pin (Male)

Polyetherimide (PEI)

Gold

Copper Alloy

MultiCat

Heavy Duty Power Connectors MultiCat R/A Header 3 Circ BLK Key A

201843-1030
Molex
1: S/76.06
730In Stock

Mfr. Part #
201843-1030

Mouser Part #
538-201843-1030

Molex

Heavy Duty Power Connectors MultiCat R/A Header 3 Circ BLK Key A

Learn More

Datasheet

730In Stock

S/76.06

S/64.77

S/61.42

S/60.53

View

Min.: 1
Mult.: 1

201843

Connectors

40 A

3 Position

Solder

1 kV

Pin (Male)

Polyetherimide (PEI)

Gold

Copper Alloy

MultiCat

Heavy Duty Power Connectors MultiCat Herm BCKSHL 4 Circ 8-10AWG GRY

201844-0041
Molex
1: S/18.72
731In Stock

Mfr. Part #
201844-0041

Mouser Part #
538-201844-0041

Molex

Heavy Duty Power Connectors MultiCat Herm BCKSHL 4 Circ 8-10AWG GRY

Datasheet

731In Stock

S/18.72

S/17.05

S/16.15

S/15.03

View

Min.: 1
Mult.: 1

201844

Accessories

Backshell

4 Position

Polyetherimide (PEI)

8 AWG

10 AWG

MultiCat

Heavy Duty Power Connectors MultiCat Herm BCKSHL 3 Circ 12-18AWG BLK

201844-0130
Molex
1: S/10.70
7,511In Stock
6,000Expected 9/11/2026

Mfr. Part #
201844-0130

Mouser Part #
538-201844-0130

Molex

Heavy Duty Power Connectors MultiCat Herm BCKSHL 3 Circ 12-18AWG BLK

Learn More

Datasheet

7,511In Stock

6,000Expected 9/11/2026

S/10.70

S/9.54

S/8.25

S/7.86

View

Min.: 1
Mult.: 1

201844

Accessories

Backshell

3 Position

Polyetherimide (PEI)

18 AWG

12 AWG

MultiCat

Heavy Duty Power Connectors MultiCat Plug Terminal 8-10 AWG

201845-0040
Molex
1: S/21.10
1,685In Stock
4,250On Order

Mfr. Part #
201845-0040

Mouser Part #
538-201845-0040

Molex

Heavy Duty Power Connectors MultiCat Plug Terminal 8-10 AWG

Learn More

Datasheet

1,685In Stock

4,250On Order

S/21.10

S/17.94

S/16.82

S/16.00

View

Min.: 1
Mult.: 1

201845

Contacts

40 A

Crimp

1 kVAC

Pin (Male)

Gold

Copper Alloy

10 AWG

8 AWG

MultiCat

Heavy Duty Power Connectors MultiCat Receptacle Terminal 16-18 AWG

201846-0010
Molex
1: S/21.25
2,879In Stock
2,500Expected 9/17/2026

Mfr. Part #
201846-0010

Mouser Part #
538-201846-0010

Molex

Heavy Duty Power Connectors MultiCat Receptacle Terminal 16-18 AWG

Learn More

Datasheet

2,879In Stock

2,500Expected 9/17/2026

S/21.25

S/19.35

S/18.33

S/17.87

View

Min.: 1
Mult.: 1

201846

Contacts

16 A

Crimp

1 kVAC

Pin (Male)

Gold

Copper Alloy

18 AWG

16 AWG

MultiCat

Heavy Duty Power Connectors MultiCat Inline Rcpt Hsg 4Ckt Key A Blk

201841-0040
Molex
1: S/45.04
41In Stock
384Expected 11/19/2026

Mfr. Part #
201841-0040

Mouser Part #
538-201841-0040

Molex

Heavy Duty Power Connectors MultiCat Inline Rcpt Hsg 4Ckt Key A Blk

Datasheet

41In Stock

384Expected 11/19/2026

S/45.04

S/38.30

S/35.89

S/34.18

View

Min.: 1
Mult.: 1

201841

Connectors

4 Position

Crimp

Polyetherimide (PEI)

MultiCat

MultiCat High-Power Connector System

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