Eaton TP678 Switch Box - Gangable Steel, 14 cu in NEC/CEC
Part Number: TP678
Quick Summary
The Eaton TP678 switch box is a steel gangable enclosure for surface-mounted electrical junctions in industrial control panels. Engineers often struggle with undersized enclosures, limited knockouts, and installation challenges in tight spaces. This box complies with NEC/CEC standards and is rated for ordinary/non-hazardous locations, supporting safe, code-compliant installations. Designed as part of the Crouse-Hinds steel switch boxes family, TP678 delivers 14 cu in capacity and flexible knockouts for scalable control panels. Its rugged steel construction, 2 in length, 2.75 in width, and 3 in height balance compact footprint with generous space for wiring, while ears enable secure mounting in industrial enclosures.
Product Information
Extended Description
TP678 Eaton: Eaton Crouse-Hinds series Switch Box, (1) 1/2", Conduit (no clamps), 2-3/4", (1) 3/4", Steel, (1) 3/4", Ears, Gangable, 14.0 cubic inch capacity
Product Name
Eaton Crouse-Hinds series switch box
Catalog Number
TP678
UPC
786189106787
Product Length/Depth
2 in
Product Height
3 in
Product Width
2.75 in
Product Weight
0.61 lb
Area classification
Ordinary/Non-Hazardous Locations
Standards type
NEC/CEC
Depth
2-3/4"
Type
Gangable
Capacity
14 cubic in
Conduit/cable
Conduit (no clamps)
End Knockouts
(1) 3/4 in
Side knockouts
(1) 3/4 in
Bottom Knockouts
(1) 1/2 in
Material
Steel
Special features
Ears
Crouse-Hinds series Steel Switch Boxes catalog page
Steel Switch Boxes UL certification
Steel Switch Boxes UL certification
Eaton Specification Sheet - TP678
Eaton Specification Sheet - TP678
Feature: 14 cubic inch capacity. Benefit: Provides ample wiring space for common control circuits, reducing the need for splice cabinets and improving wiring organization in small to mid-size control panels. Application: Ideal for surface-mounted electrical enclosures in machine control panels where wiring density is a concern. Feature: Steel construction. Benefit: Delivers durability and protection against daily industrial handling, extending enclosure life in harsh environments. Application: Suitable for rugged shop floors and equipment rooms where impact resistance and rigidity matter. Feature: Conduit (no clamps) with knockouts. Benefit: Simplifies field wiring with flexible routing options and faster installation, reducing labor time during rough-in. Application: Works with standard conduit runs using end, side, and bottom knockouts for versatile wiring layouts. Feature: Gangable with ears. Benefit: Enables scalable enclosure assemblies for expanding control cabinets, reducing the need for separate, new boxes as systems grow. Application: Useful in modular panel designs where future expansion is anticipated. Feature: NEC/CEC compliance and ordinary location rating. Benefit: Ensures code-compliant installations, minimizing compliance risk and inspection issues. Application: Appropriate for non-hazardous environments in commercial and industrial facilities. Feature: Clear dimensional data and mounting compatibility. Benefit: Predictable fit with 2 in length, 2.75 in width, and 3 in height facilitates planning and space budgeting. Application: Helps engineers verify enclosure placement in tight control panels and louvered cabinets.
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FAQs
TP678 uses conduit with no clamps and provides knockouts at the end, side, and bottom entrances (one 3/4 in end knockout, one 3/4 in side knockouts, and one 1/2 in bottom knockout). This arrangement supports standard field wiring with common conduit sizes, simplifying rough-in and allowing flexible routing.
The TP678 offers a 14 cubic inch internal capacity and is manufactured from steel, delivering a durable, non-corrosive enclosure suitable for steady operation in industrial environments while accommodating multiple conductors and wiring runs.
Yes. The TP678 is rated for Ordinary/Non-Hazardous Locations and complies with NEC/CEC standards, providing a code-compliant solution for surface-mounted switch box applications in typical industrial settings.
TP678 is gangable and includes ears for secure mounting, enabling seamless expansion into larger, modular control panels. This makes it ideal for phased installations where panel size may grow over time.
Official documents include the Crouse-Hinds steel switch boxes catalog page, UL certification reports, and Eaton specification sheets available in the downloads section. These resources verify material, dimensions, knockouts, and compliance details.