Cooper Wiring Devices CSB420B Four Way Toggle Switch

Product Description

The COOPER WIRING DEVICES CSB420B is a four-way toggle switch rated for commercial-grade electrical applications. It operates at 120 to 277 VAC single-phase and handles up to 20 amps of load current. Designed for fluorescent lighting circuits, the CSB420B features a brown finish and a robust toggle-style actuator built to withstand the demands of commercial installations. Licensed electricians install this switch in multi-location lighting control configurations where three or more switching points are required. The unit meets UL 20 and UL Federal Specification W-C-896F standards and is RoHS compliant.

This switch is suited for commercial electrical systems controlling fluorescent lighting across retail, office, institutional, and light industrial environments. It supports single-phase circuits in the 120 to 277 VAC range, making it compatible with both standard 120-volt branch circuits and higher-voltage 277-volt fluorescent lighting circuits common in commercial buildings. The operating temperature range runs from -4 to 140 degrees F, which covers typical indoor commercial installation conditions. It is sold individually and ships as a single-unit package.

Key Features

• Four-way toggle configuration for multi-location lighting control
• 20-amp rating supports commercial fluorescent lighting loads
• Wide voltage range: 120 to 277 VAC single-phase
• Commercial grade construction for high-cycle durability
• Meets UL 20, UL 94 V-2, and UL Federal Specification W-C-896F
• RoHS compliant and NAFTA compliant

Compatibility

Designed as a commercial-grade replacement or new-installation four-way toggle switch for fluorescent lighting branch circuits operating at 120 to 277 VAC single-phase.

Installation Notes

Installation must be performed by a qualified, licensed electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. De-energize the circuit at the breaker panel and verify the absence of voltage with a meter before wiring. Four-way switches are installed between two three-way switches in a multi-location circuit and require correct traveler terminal connections. Do not exceed the 20-amp or 277-volt ratings of this device.