NSI Industries 3939ASP - 1/2" Insulated Duplex E-Z LOCK Snap-In MC Connector
NSI Industries

3939ASP

UPC: 781747086921


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Minimum Qty: 25

Multiplier: 25

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Overview

The NSi Industries 1/2" Insulated Duplex E-Z LOCK Snap-In MC Connector (SKU: 3939ASP) provides secure and efficient electrical connections for industrial applications. This connector features a thermoplastic insulator for conductor protection and a steel clamp and locknut for robust mounting. Designed for 1/2" conduit size, it accommodates a range of NM cable types, including 2 #14 through 4 #4 Type NM Cable, with an outside diameter range of .250" to 1.150". The snap-in E-Z LOCK design simplifies installation, reducing labor and downtime, and eliminates the need for special tools or locknuts in many applications. Its locknut is engineered to prevent vibration loosening, ensuring a secure connection to boxes or enclosures. Certified by UL (File No: E-23017) and CSA (LR-589, LR-2884), this connector conforms to UL 514B, CSA C22.2 No. 18, and NFPA 70-1999 standards. Ideal for motor control centers, panel boards, and other high-demand electrical installations, it offers reliable performance in demanding environments. Manufactured in the USA.
  • 1/2" Insulated Duplex E-Z LOCK Snap-In MC Connector
  • Thermoplastic insulator protects conductors and reduces wire pulling effort
  • Steel clamp and locknut for secure mounting; locknut will not vibrate loose
  • Accommodates 2 #14 to 4 #4 Type NM Cable with OD .250" to 1.150"
  • UL Listed (E-23017) and CSA Certified (LR-589, LR-2884)

Specifications

Application
Bridgeport’s ASP line of E-Z LOCK® Duplex Snap-in Connectors offers superior installation speed with no tools required. To install, push the cables into the rear of the fitting, insert the fitting into the KO at an angle, and rock up to snap the front end in place.
Finish
Ball burnish
Insulation
Yes
Material
Zinc Die Cast
Size
1/2" IN
Size
1/2
Special Features
Listed for use with AC / AC90 / ACG90 / MC / MCI-A / HCFMCI-A / MC-PCS Cable*. cETLus Listed.
Standard
UL 514B
Type
Insulated Duplex E-Z LOCK® Snap-In MC Connector
Package Weight (Imperial)
0.235 L
Package Weight (Metric)
0.107 kg
Locknut, Grounding, Zinc Die Cast, Size 4 Inch, 3/0-6 Lug

170-G

Locknut, Grounding, Zinc Die Cast, Size 4 Inch, 3/0-6 Lug
1" Rigid threaded concrete encasable flanged fitting

CSS-100

1" Rigid threaded concrete encasable flanged fitting
Threaded Hub, Zinc Die Cast, Size 1 1/2 Inch

155-DC

Threaded Hub, Zinc Die Cast, Size 1 1/2 Inch
Support, Box, Zinc Die Cast, Trade Size 1/2 Inch

BS-050

Support, Box, Zinc Die Cast, Trade Size 1/2 Inch
Locknut, Grounding, Zinc Die Cast, Size 1-1/2 Inch, 14-1/0 Lug

165-G

Locknut, Grounding, Zinc Die Cast, Size 1-1/2 Inch, 14-1/0 Lug
1/2" Duplex E-Z LOCK Snap-In MC Connector

3939SP

1/2" Duplex E-Z LOCK Snap-In MC Connector
Entrance Cap, Threaded, Zinc Die Cast, Size 1-1/4 Inch

1204

Entrance Cap, Threaded, Zinc Die Cast, Size 1-1/4 Inch
Mighty-Seal Jacketed MC Cable Connector3/8" PVC MC/TECK CABLE CONNECTOR

595-DC2

Mighty-Seal Jacketed MC Cable Connector3/8" PVC MC/TECK CABLE CONNECTOR
Locknut, Grounding, Zinc Die Cast, Size 2 Inch, 14-1/0 Lug

166-G

Locknut, Grounding, Zinc Die Cast, Size 2 Inch, 14-1/0 Lug
Locknut, Conduit, Zinc Die Cast, Fitting Locknut, Size 3/4 Inch

102-DC

Locknut, Conduit, Zinc Die Cast, Fitting Locknut, Size 3/4 Inch
Connector, Screw-In, Zinc Die Cast, Flex Size 1 Inch, 90 deg

93-DC2

Connector, Screw-In, Zinc Die Cast, Flex Size 1 Inch, 90 deg
Locknut, Conduit, Zinc Die Cast, Fitting Locknut, Size 3 1/2 Inch

109-DC

Locknut, Conduit, Zinc Die Cast, Fitting Locknut, Size 3 1/2 Inch

Frequently Asked Questions

What cables are compatible with the 3939ASP connector?

The 3939ASP is compatible with cables having a diameter of 0.54 - 0.73 inches, specifically 10/3 to 8/3 cable AC / AC90 / ACG90 / MC / MCI-A / HCFMCI-A / MC-PCS.

What is the trade size of the 3939ASP connector?

The trade size of the 3939ASP connector is 1/2 inch.

What certifications does the 3939ASP have?

The 3939ASP is cETLus Listed and conforms to UL STD 514B and is certified to CAN/CSA STD. C22.2 No. 18.3.

What is the maximum cable diameter for the 3939ASP?

The maximum cable diameter for the 3939ASP is 0.73 inches.

What is the minimum cable diameter for the 3939ASP?

The minimum cable diameter for the 3939ASP is 0.54 inches.

What is the installation process for the 3939ASP?

To install the 3939ASP, push the cables into the rear of the fitting, insert the fitting into the KO at an angle, and rock up to snap the front end in place.

How many units are in a standard package of 3939ASP?

A standard package of the 3939ASP contains 100 units.

What is the dimension A of the 3939ASP connector?

Dimension A of the 3939ASP connector is 1.855 inches.

What materials are used in the 3939ASP connector?

The 3939ASP connector is made from zinc die cast with a ball burnished, mirror smooth finish.

What is the purpose of the internal spring steel locking tabs?

The integral internal spring steel locking tabs fasten the cable or conduit securely within the connector.

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