4983-DS277-404

Overview of Allen Bradley 4983-DS277-404

The Allen Bradley 4983-DS277-404 is a surge suppressor designed for reliable protection of electrical equipment in industrial and commercial facilities. Manufactured by Allen-Bradley, this device is built to defend systems operating at 277/480 VAC against damaging voltage spikes and transient surges. It utilizes advanced surge suppression technology and is suitable for 1- and 3-phase applications with a 4-pole design. Its standard duty rating and high surge current capacity (up to 40 kA) make it ideal for environments demanding continuous protection and operational safety. The compact footprint and DIN rail mounting facilitate quick integration into control panels or switchgear, streamlining installation and maintenance. UL 1449 compliance ensures adherence to recognized safety standards, while the device’s wide operating temperature range supports performance in challenging environments. Trusted across industries, Allen Bradley 4983-DS277-404 helps preserve equipment lifespan and uptime by significantly reducing the risk of surge-related failures.

Key Features of Allen Bradley 4983-DS277-404

• Rated for 277/480 VAC main systems
• Standard duty 4-pole surge protection
• Maximum surge current: 40 kA (10/350 μs waveform)
• DIN rail mounting for fast installation
• Status indication via front-facing LED
• Complies with UL 1449 and major international standards
• Wide operational temperature range: -40°C to +80°C

Technical Specs of 4983-DS277-404

• Nominal Voltage: 277/480 VAC
• Number of Poles: 4
• Maximum Discharge Current (Imax): 40 kA
• Operating Frequency: 50/60 Hz
• Enclosure type: DIN rail mount, high-impact plastic
• Certifications: UL 1449, UR recognized, CE marked
• Operating Temperature: -40°C to +80°C
• Status Indicator: Green LED

Applications / Use Case

Allen Bradley 4983-DS277-404 is built for use in industrial and commercial electrical distribution panels where protection from voltage transients is crucial. It is particularly suited for main service entrances, motor control centers, switchgear, and sensitive control panels in automation systems. Facilities using 277/480 VAC systems—such as factories, data centers, and large commercial buildings—benefit from its reliable surge suppression, safeguarding PLCs, drives, sensors, and instrumentation against power disturbances. This model's 4-pole configuration allows coverage of all phases plus neutral, making it versatile for both 1-phase and 3-phase networks. Employing robust surge protection devices like this helps maintain equipment uptime, reduce maintenance costs, and extend overall system life, ensuring continued productivity and regulatory compliance.

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