Hubbell Incorporated
Hubbell Incorporated RACO 3520 wire cap connector
A liquid-tight conduit fitting for 2-1/2 inch trade size, straight connection, insulated, steel construction in gray
- Color MappingGray
- TypeCable Management & Conduit
- Liquid-tight seal protects wiring in wet locations
- Insulated throat prevents conductor damage during pulling
- Straight 2-1/2 in MNPT hub fits standard boxes
- Steel construction resists impact and corrosion on site
- Compatible with metallic and non-metallic Type B conduit
Conduit Fitting for 2-1/2 in Trade Size
The RACO 3520 is a liquid-tight conduit fitting designed for 2-1/2 inch trade size connections. It accepts both flexible liquid-tight metallic conduit and flexible liquid-tight non-metallic Type B conduit. The straight orientation provides a direct box connection via 2-1/2 inch MNPT threads. It is built from iron and steel with a gray finish for durability in electrical installations.
Insulated Construction and Material
This fitting features an insulated design that protects conductors during pulling and prevents damage at the connection point. The iron and steel construction delivers mechanical strength for industrial and commercial environments. No strain-relief mesh is included, so the fitting relies on its threaded engagement and compression to secure the conduit. The gray color mapping allows for quick visual identification in conduit runs.
Capacity for Large-Diameter Conduit Runs
The 2-1/2 inch trade size handles heavy-gauge conductors and multi-cable bundles typical of service entrances and feeder circuits. It provides ample interior space for bending radius compliance with large cables. Installations requiring smaller trade sizes or angled connections will need a different fitting, as this model is fixed at the stated size and straight orientation only.
Highlights
- Liquid-tight seal protects wiring in wet locations
- Insulated throat prevents conductor damage during pulling
- Straight 2-1/2 in MNPT hub fits standard boxes
- Steel construction resists impact and corrosion on site
- Compatible with metallic and non-metallic Type B conduit
Specifications
| Brand | RACO |
|---|---|
| Color Mapping | Gray |
| Type | Cable Management & Conduit |
Questions about this item
Will the steel body or gray finish need replacement if exposed to moisture over time?
The steel construction with gray coating resists corrosion in liquid-tight applications, so no scheduled replacement is needed unless physical damage occurs.
What limits continuous use when the conduit carries heavy cables?
The straight 2-1/2 in MNPT fitting relies on thread engagement and compression sealing; overtightening or cable weight pulling on the joint will compromise the liquid-tight seal first.
Does the fitting generate heat or noise when conduit runs full-time?
As a passive metal connector it produces no heat or noise; temperature rise depends only on the conductors inside the conduit, not on the fitting itself.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
Unique-Bargains XS12JK-3 3P 12mm Round Socket Male Female Aviation Connector
- Electrical Wire Con…



