100-KFSV55

Overview of Allen Bradley 100-KFSV55

The Allen Bradley 100-KFSV55 is a surge suppressor module engineered for industrial motor control and automation systems. This module is designed to protect relay and contactor coils by attenuating potentially harmful voltage spikes that can result from switching inductive loads. It integrates a metal-oxide varistor (MOV) element to absorb surges, ensuring the reliable operation and longevity of critical control components. The 100-KFSV55 is compatible with multiple coil voltages, making it a flexible solution for a wide range of panel designs. Use of this suppressor enhances the durability of contactors and relays, reduces the nuisance tripping of sensitive devices, and supports stable control system performance. The compact form factor and straightforward installation support fast deployment in both control cabinets and distributed installations.

Key Features of Allen Bradley 100-KFSV55

• Metal-oxide varistor (MOV) surge suppression for AC and DC coils
• Operational voltage range: 12–55V AC (50/60 Hz) and 12–77V DC
• Accessory for the 100-K, 104-K, and 700-K relay/contactor series
• Simple snap-on mounting
• Supports both new builds and retrofit applications

Technical Specs of 100-KFSV55

• Coil Voltage: 12–55V AC (50/60 Hz), 12–77V DC
• Suppression Technology: MOV (Metal-oxide varistor)
• Operating Frequency: 50 Hz / 60 Hz (AC)
• Module Type: Surge arrester / Suppressor accessory
• Compatible Series: 100-K, 104-K, and 700-K contactors/relays
• Mounting: Plug-in module
• Manufacturer: Allen Bradley (Rockwell Automation)

Applications / Use Case

The Allen Bradley 100-KFSV55 is intended for electrical panels where relays and contactors are exposed to inductive switching, often found in manufacturing, processing, and automation facilities. Its primary role is to suppress voltage surges on control coils, which can otherwise degrade electrical insulation, cause false triggering, or accelerate component wear. This makes the 100-KFSV55 particularly useful in PLC-controlled motor starters, solenoid-operated assemblies, and other distributed control environments. The module supports preventative maintenance programs by minimizing unplanned downtime linked to electrical transients. Integrators, maintenance teams, and machine builders use the 100-KFSV55 to extend the life of their relay-based systems and meet reliability criteria in demanding industrial settings.

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