The 276W‑BOX duplex combination switch from Eaton / Cooper Wiring Devices is a high‑performance, commercial‑grade solution designed for installations that require two independent 3‑way lighting controls within a single gang location. This device integrates two full‑function 3‑way toggles into one compact assembly, making it ideal for multi‑location lighting applications where space efficiency, durability, and reliability are top priorities.

Crafted from rugged thermoplastic materials with brass internal components and a corrosion‑resistant mounting strap, this switch is engineered for long service life in demanding environments. Its clean white finish ensures compatibility with standard wall plates and modern commercial design aesthetics.

The 276W‑BOX is a part of Eaton’s spec‑grade Arrow Hart line, known for superior mechanical endurance, consistent electrical performance, and installation‑friendly features. Designed to meet or exceed commercial expectations, this duplex switch delivers professional reliability for contractors, electricians, and facility managers.

Key Features

• Dual 3‑Way Switching: Provides two independent 3‑way toggle switches in one duplex combination body, allowing multi‑location control of two separate lighting loads. 
• Commercial‑Grade Construction: Built for heavy‑duty use with robust internal brass components, thermoplastic housing, and a zinc‑plated mounting strap for superior corrosion resistance. 
• Back and Side Wiring: Accepts #14–#12 AWG conductors, with both wiring options for simplified installation in tight or complex spaces. 
• Thermoplastic Body: Virtually unbreakable top and back body designed to withstand frequent switching and high‑traffic environments. 
• Wide Operating Temperature Range: Performs reliably from –20°C to 60°C, suitable for commercial buildings, institutions, and industrial facilities. 
• Commercial Voltage Rating: Supports 120/277V AC circuits, making it usable across a broad range of commercial lighting systems. 
• Clean, Professional Appearance: White color blends naturally with standard wall plates and modern interior design.

Specifications

Electrical

• Amperage: 15A 
• Voltage Rating: 120/277V AC 
• Switch Type: (2) 3‑Way toggles in a duplex configuration 
• Connection Type: Screw terminals; back and side wiring supported 

Construction & Materials

• Housing Material: Thermoplastic top and back body, impact‑resistant and built for durability 
• Internal Components: Heavy‑duty brass contacts to ensure long‑term conductivity and reliability 
• Mounting Strap: Zinc‑plated steel for enhanced corrosion resistance in commercial environments 
• Actuator Type: Paddle‑style toggle switches with firm tactile feedback 

Environmental

• Operating Temperature: –20°C to 60°C 

Design

• Color: White
• Form Factor: Duplex combination device suitable for standard single‑gang electrical boxes

Applications

The 276W‑BOX is ideal for environments requiring dual multi‑location lighting control in a compact footprint:

Commercial

• Office buildings
• Retail facilities
• Hospitality environments
• Medical offices and clinics
• Public and municipal buildings

The dual 3‑way configuration is perfect for long hallways, large rooms with multiple access points, and situations where two separate lighting loads must be controlled from more than one location. 

Industrial & Institutional

• Warehouses
• Schools and universities
• Manufacturing support areas
• Laboratories and research facilities

Built with corrosion‑resistant materials and high‑grade internals, it is suitable for facilities requiring durable, long‑life switching hardware. 

Residential (Professional Installers)

• Multi‑story staircases
• Large living areas with multiple entrances
• Long hallways
• Dual‑zone lighting control

The convenience of two 3‑way switches in one gang reduces wall clutter and simplifies installation in homes where professional‑grade durability is desired.