Bridgeport Fittings 4357-DC Mi...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$33.75
Bridgeport Fittings 4357-DC Mighty-Merge EMT to Triple AC/FMC Combination Coupling, 1" to 3/8"

Bridgeport Fittings 4357-DC Mighty-Merge EMT to Triple AC/FMC Combination Coupling, 1" to 3/8"

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Model: 4357-DC

In Stock (leaves warehouse same day if ordered before 3pm ET)

$33.75
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Bridgeport Fittings 4357-DC Mighty-Merge EMT to Triple AC/FMC Combination Coupling, 1" to 3/8"

The Bridgeport Fittings 4357-DC Mighty-Merge Combination Coupling transitions a single 1" EMT conduit run into three separate 3/8" connections for AC (armored cable) or FMC (flexible metal conduit), all in one compact fitting. Designed for electricians who need to consolidate multiple flexible cable or conduit runs into a single EMT raceway, this Mighty-Merge coupling simplifies wiring at panels, junction boxes, and equipment connections. The 1" to 3/8" transition design reduces the number of individual fittings and knockouts required for multi-circuit installations.

Key Features

  • Trade Size Transition: Combines a 1" EMT trade size on one end with three individual 3/8" connections on the other end.
  • Triple Outlet Design: Provides three separate 3/8" ports for AC or FMC cable, allowing multiple flexible runs to feed into a single EMT conduit.
  • Mighty-Merge Combination Coupling: Purpose-built to merge EMT conduit with AC or FMC cable in one fitting, eliminating the need for separate couplings and connectors.
  • Installation Flexibility: Each 3/8" outlet accepts either AC or FMC cable, giving installers flexibility to match the cable type used on the job.
  • Space-Saving Fitting: Reduces box fill and panel congestion by consolidating three cable connections into a single 1" EMT entry point.
  • Streamlined Installation: A single Mighty-Merge fitting replaces multiple standalone couplings and connectors, saving labor time on the job site.

Technical Specifications

  • Series: Mighty-Merge
  • EMT Trade Size: 1"
  • AC/FMC Connections: Three (3) x 3/8" outlets
  • Model: 4357-DC

Typical Applications

  • Combination Conduit-to-Cable Wiring Systems
  • Commercial and Industrial Electrical Installations
  • Junction Box and Panel Transitions
  • EMT to Armored Cable (AC) Runs
  • EMT to Flexible Metal Conduit (FMC) Runs

Why Bridgeport Fittings?

Bridgeport Fittings' Mighty-Merge line is engineered to simplify complex conduit-to-cable transitions that would otherwise require multiple individual fittings. The 4357-DC combination coupling helps electrical professionals save installation time while keeping wiring runs organized and code-compliant. Choosing Bridgeport Fittings means specifying a purpose-built solution for merging EMT conduit with AC or FMC cable in commercial and industrial electrical systems.

Manufacturer Resources

Product Specs

list_batch:
BPF-20260918
Product Type:
Combination Coupling
Series:
Mighty-Merge
Department:
Electrical
Product Subgroup:
Flexible Conduit & Fittings
Product Size:
1"
Product Group:
Conduit & Raceway

Bridgeport Fittings 4357-DC – Frequently Asked Questions

1) What does the Bridgeport 4357-DC Mighty-Merge coupling actually connect?
It takes one 1 inch EMT conduit on one end and splits it into three separate 3/8 inch ports on the other, each accepting AC (armored cable) or FMC (flexible metal conduit). So a single EMT raceway feeds three flexible runs through one fitting instead of three individual couplings and connectors.
2) Can a Kraloy 078005 PVC conduit coupling be used in place of the Bridgeport Fittings 4357-DC Mighty-Merge coupling?
No. The Kraloy 078005 is a CP15 1-1/2 inch PVC conduit coupling, which joins two runs of rigid PVC conduit of the same trade size. The Bridgeport Fittings 4357-DC is a Mighty-Merge combination coupling that transitions a single 1 inch EMT run into three separate 3/8 inch ports, each accepting AC armored cable or FMC flexible metal conduit. One is a same-size PVC-to-PVC joint; the other is a metal raceway-to-cable transition with three outlets, so they are not interchangeable in either direction.
3) Can I mix armored cable and flexible metal conduit in the same Mighty-Merge fitting?
Yes. Each of the three 3/8 inch outlets accepts either AC or FMC, so you can run two armored cables and one flex out of the same coupling if that is what the job calls for.
4) How does this cut down on panel knockouts?
Three cable runs land on one 1 inch EMT entry rather than three separate knockouts and connectors at the panel or junction box. That is the point of the Mighty-Merge design: fewer holes to punch, less congestion at the enclosure, and fewer pieces to buy and install.
5) Is a PVC conduit coupling like the Kraloy CP15 an alternative to this fitting?
No, they do different jobs. The Kraloy 078005 CP15 is a 1-1/2 inch PVC conduit coupling, meant to join two runs of PVC conduit of the same size. The Bridgeport 4357-DC is a metallic transition fitting that merges 1 inch EMT into three 3/8 inch AC or FMC ports. If you are joining PVC to PVC, the Kraloy is the part; if you are transitioning EMT to flexible cable, it is the 4357-DC.
6) I need to join two lengths of PVC conduit, not merge cables into EMT - is the 4357-DC the right coupling?
No. The 4357-DC Mighty-Merge coupling is built to merge three 3/8 inch AC or FMC cable runs into one 1 inch EMT entry, so it has dissimilar ends and is not a straight conduit-to-conduit joint. For joining rigid PVC conduit of the same trade size, a PVC coupling such as the Kraloy 078005 CP15 in 1-1/2 inch is the correct style of fitting; match the coupling trade size to the PVC you are running.
7) Where on a commercial job would an electrician use an EMT-to-triple-flex coupling?
Typical spots are panel and junction box transitions, and equipment drops where several 3/8 inch AC or FMC whips break out of one EMT home run, for example lighting or multi-circuit branch work in commercial and industrial installations. It saves the labor of building that transition out of separate couplings and connectors.
8) What part number do I order for the 1 inch Bridgeport Mighty-Merge triple combination coupling?
Order Bridgeport Fittings 4357-DC. It is sold in the single 1 inch size, so there is no size or finish option to specify.
How fast can I get the Bridgeport Fittings 4357-DC delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Bridgeport Fittings 4357-DC come with a warranty?
Absolutely. The Bridgeport Fittings 4357-DC is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Bridgeport Fittings 4357-DC?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Bridgeport Fittings 4357-DC from ZenSupply?
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