4983-DS277-804

Overview of Allen Bradley 4983-DS277-804

The Allen Bradley 4983-DS277-804 is a DIN rail-mounted surge protective device engineered to safeguard sensitive equipment from damaging overvoltage events in industrial power systems. Compatible with 480Y/277 VAC, this surge suppressor integrates directly into main electrical panels for both 1-phase and 3-phase applications. The 4983-DS277-804 leverages metal oxide varistor (MOV) technology to efficiently clamp high-voltage surges, providing a reliable first line of defense against transient events caused by lightning or switching operations. Its modular form factor ensures ease of installation and maintenance, while compliance with UL 1449 and multiple international standards underscores its suitability for demanding environments such as manufacturing facilities, critical infrastructure, and automation control panels. This model is well-suited for users requiring industry-recognized certification, consistent performance, and straightforward replacement indication.

Key Features of Allen Bradley 4983-DS277-804

• Rated for 480Y/277 VAC systems with 80kA surge capacity.
• DIN rail mounting for fast installation in standard panels.
• Parallel connection type and 4-pole configuration.
• Visual status indicator with green LED for easy diagnostics.
• UL 1449, CE, CSA, cURus certified for global market compliance.
• MOV technology for fast and effective surge clamping.
• Operating temperature from -40°C to +80°C.
• Remote signaling capability for integration with monitoring systems.

Technical Specs of 4983-DS277-804

• Nominal Voltage: 480Y/277 VAC
• Surge Capacity: 80kA
• Configuration: 4-pole
• Mounting: DIN rail
• Connection Type: Parallel
• Status Indicator: Green LED, remote signaling
• Response Time: < 0.5 ns (normal mode)
• Certifications: UL 1449, CE, CSA, cURus
• Operating Temperature: -40°C to +80°C

Applications / Use Case

Industrial users rely on the Allen Bradley 4983-DS277-804 to protect electrical infrastructure and reduce downtime caused by surges originating from lightning strikes, switching events, or utility issues. Typical installations include main switchboards, motor control centers, automation panels, and electrical distribution boards in environments like manufacturing, water treatment, commercial buildings, and process automation. Its high surge capacity and full compliance with global standards make it appropriate for critical assets, PLCs, drives, and control networks requiring continuous uptime and asset longevity. The 4-pole design ensures comprehensive protection across all phases and neutral, while remote signaling enhances integration into facility management and monitoring platforms.

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