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[Features]This is a waterproof, screw type panel-mount receptacle manufactured by Nanaboshi Electric Mfg. A special chemical surface treatment is used. It is mounted on a panel and connected to a straight plug. Demonstrates waterproof function when mated. [Applications]Ideal for cable extension and relaying between devices.


Part Number
Configured Part Number is shown.
NJW-20-12-RM

| Model | Shell Size | Number of Cores | Shape Symbol | Contact Shape | Weight (g) |
| NJW | 16 | 3 | RM | Male (Pin) | 24 |
| 5 | 23 | ||||
| 3 | RF | Female (Socket) | 26 | ||
| 5 | 24 | ||||
| 20 | 2 | RM | Male (Pin) | 30 | |
| 3 | 31 | ||||
| 4 | 30 | ||||
| 5 | 31 | ||||
| 7 | 31 | ||||
| 12 | 30 | ||||
| 2 | RF | Female (Socket) | 33 | ||
| 3 | 34 | ||||
| 4 | 33 | ||||
| 5 | 35 | ||||
| 7 | 35 | ||||
| 12 | 33 | ||||
| 24 | 2 | RM | Male (Pin) | 42 | |
| 3 | 46 | ||||
| 4 | 39 | ||||
| 5 | 40 | ||||
| 10 | 40 | ||||
| 14 | 38 | ||||
| 16 | 38 | ||||
| 2 | RF | Female (Socket) | 43 | ||
| 3 | 45 | ||||
| 4 | 45 | ||||
| 5 | 45 | ||||
| 10 | 45 | ||||
| 14 | 42 | ||||
| 16 | 43 | ||||
| 28 | 16 | RM | Male (Pin) | 29 | |
| 24 | 27 | ||||
| 16 | RF | Female (Socket) | 38 | ||
| 24 | 33 |
mark item
| Part Number |
|---|
| NJW-20-12-RM |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | Number Of Pins | Applicable pin/contact | Allowable Current (A) | Allowable Voltage (V) | Representative Standard | Shell size |
|---|---|---|---|---|---|---|---|---|---|---|
MYR 75.29 | 1 Piece(s) | Available | 4 Day(s) or more | 12 | Male (plug) | 5 | 250 | - | 20 |
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Waterproof Medium Type Connectors (NJW)
Features
● NJW series connectors are round metal connectors, designed to enhance water-proofing functionality when mated. (IPX7 equivalent)Common Specifications
Materials / Finish
| Item | Materials | Finish |
|---|---|---|
| Shell / Dustproof Cap | Zinc or Aluminum Alloy (shell size 28) |
Chrome Plated or special chemical processing |
| Insulator | Synthetic Resin | - |
| Contact | Copper Alloy | Silver Plating |
| Rubber Packing | Synthetic Rubber | - |

Characteristics
| Item | Contents |
|---|---|
| Rated Current | Check with the table below. |
| Rated Voltage | Check with the table below. |
| Withstand Voltage | No abnormality such as short circuiting occurs when regulated voltage is applied for 1 minute between immediately adjacent conductors. |
| Insulation Resistance | 1,000 MΩ or higher when measured between immediately adjacent conductors with regulated voltage. |
| Contact Resistance | Conductor resistance is 5 mΩ or less when a pair of contacts are connected at up to the regulation length. |
| Vibration Resistance | No functional defect was found during the JIS C 5025 vibration test. Contact resistance is 5 mΩ or less. |
| Impact Resistance | No functional defect was found during the JIS C 5026 shock test. Contact resistance is 5 mΩ or less. |
| Repeated Operation | No functional defect was found when a removal and insertion sequence was tested 500 times. Contact resistance is 5 mΩ or less. |
| Humidity Resistance | No functional defect was found during the JIS C 5023 humidity test. Insulation resistance is 100 MΩ. |
| Temperature Cycle | No functional defect was found during the JIS C 5030 temperature cycle test. |
| Corrosion Resistance | No functional defect was found during the JIS C 5028 salt water spray test. Contact resistance is 5 mΩ or less. |
| Waterproofing | No abnormality such as flooding was found when left under water pressure of 0.4 kgf/cm2 at regular working conditions for 24 hours or more. |
| Operating Temperature Range | -25°C ~ +85°C |
Table of Basic Specifications
| Product No. | Shell Size |
Number of Cores | Shape Symbol | Rated Current (A or less) |
Rated Voltage (V or less) |
Withstand Voltage AC (V) |
Insulation Resistance (MΩ or higher) |
Contact Resistance (mΩ or less) |
Compatible Wire Size | Applicable Electric Wire Finished Outer Diameter (mm) Note 1 |
|
|---|---|---|---|---|---|---|---|---|---|---|---|
| AWG | Conductor Section Area mm2 | ||||||||||
| NJW | 16 | 3 | PF, RM, ADM |
10 | 125 | 1,500 | 2,000 | 3 | 16 | 1.25 | 8.0 ~ 11.0 |
| 5 | 5 | 1,000 | 1,000 | 5 | 20 | 0.5 | |||||
| 16 | 3 | PM, RF, ADF |
10 | 125 | 1,500 | 2,000 | 3 | 16 | 1.25 | 8.0 ~ 11.0 | |
| 5 | 5 | 1,000 | 1,000 | 5 | 20 | 0.5 | |||||
| 20 | 2, 3 | PF, RM, ADM |
15 | 250 | 1,500 | 2,000 | 3 | 14 | 2 | 7.0 ~ 12.5 | |
| 4, 5 | 10 | 16 | 1.25 | ||||||||
| 7 | 1,000 | ||||||||||
| 12 | 5 | 1,000 | 5 | 20 | 0.5 | ||||||
| 20 | 2, 3 | PM, RF, ADF |
15 | 250 | 1,500 | 2,000 | 3 | 14 | 2 | 7.0 ~ 12.5 | |
| 4, 5 | 10 | 16 | 1.25 | ||||||||
| 7 | 1,000 | ||||||||||
| 12 | 5 | 1,000 | 5 | 20 | 0.5 | ||||||
| 24 | 2, 3 | PF, RM, ADM |
20 | 250 | 1,500 | 5,000 | 3 | 12 | 3.5 | 9.5 ~ 15.0 | |
| 4, 5 | 15 | 14 | 2 | ||||||||
| 10 | 10 | 1,000 | 2,000 | 16 | 1.25 | ||||||
| 14, 16 | 5 | 1,000 | 5 | 20 | 0.5 | ||||||
| 24 | 2, 3 | PM, RF, ADF |
20 | 250 | 1,500 | 5,000 | 3 | 12 | 3.5 | 9.5 ~ 15.0 | |
| 4, 5 | 15 | 14 | 2 | ||||||||
| 10 | 10 | 1,000 | 2,000 | 16 | 1.25 | ||||||
| 14, 16 | 5 | 1,000 | 5 | 20 | 0.5 | ||||||
| 28 | 16 | PF, RM, ADM |
10 | 250 | 1,000 | 2,000 | 3 | 16 | 1.25 | 12.5 ~ 18.0 | |
| 24 | 5 | 1,000 | 5 | 20 | 0.5 | ||||||
| 28 | 16 | PM, RF, ADF |
10 | 250 | 1,000 | 2,000 | 3 | 16 | 1.25 | 12.5 ~ 18.0 | |
| 24 | 5 | 1,000 | 5 | 20 | 0.5 | ||||||
Contact Arrangement Diagram

Connection Work Method

| Wire connection method | Solder | Connection direction | Straight | Protection function (environmentally resistant) | Present |
|---|---|---|---|---|---|
| Application | Cable-to-panel mount | Connector Shape | Circular Type | M·N·O | NJW |
| Connector series initials | M・N・O | Removal method | Others |
Please check the type/dimensions/specifications of the part NJW-20-12-RM in the NJW Waterproof Panel Mountable Receptacle (Screw) series.
| Part Number |
|---|
| NJW-16-5-RF |
| NJW-16-5-RM |
| NJW-20-12-RF |
| NJW-20-2-RF |
| NJW-20-2-RM |
| NJW-20-3-RF |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | Number Of Pins | Applicable pin/contact | Allowable Current (A) | Allowable Voltage (V) | Representative Standard | Shell size |
|---|---|---|---|---|---|---|---|---|---|---|
MYR 60.35 | 1 Piece(s) | Available | 4 Day(s) or more | 5 | Female (socket) | 5 | 125 | - | 16 | |
MYR 48.90 | 1 Piece(s) | Available | 4 Day(s) or more | 5 | Male (plug) | 5 | 125 | - | 16 | |
MYR 105.12 | 1 Piece(s) | Available | 4 Day(s) or more | 12 | Female (socket) | 5 | 250 | - | 20 | |
MYR 47.23 | 1 Piece(s) | Available | 4 Day(s) or more | 2 | Female (socket) | 15 | 250 | PSE | 20 | |
MYR 42.71 | 1 Piece(s) | Available | 4 Day(s) or more | 2 | Male (plug) | 15 | 250 | PSE | 20 | |
MYR 54.19 | 1 Piece(s) | Available | 4 Day(s) or more | 3 | Female (socket) | 15 | 250 | PSE | 20 |

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