Eaton FNQ-25 Fuse - 25 A Time-Delay, 500 V, 10 kAIC

Time-delay operation is the FNQ-25's core feature, enabling short startup surges common in motors and transformers without tripping protective devices. This translates into measurable uptime gains on production lines and reduces unplanned maintenance windows. In practice, technicians deploy FNQ-25 in motor control circuits and transformer-fed loads where instant fusing would cause costly outages. The device supports selective coordination with upstream protectors, allowing downstream equipment to start smoothly while the main supply remains protected. With a 10 kAIC interrupt rating at 500 Vac, the FNQ-25 provides a robust safety margin for fault events in medium-to-large panels. This specification protects conductors and downstream equipment, minimizing arcing and collateral damage. The high interrupt rating also reduces the need for upstream protective devices, enabling simpler protection coordination. The result is fewer fuse replacements and lower maintenance labor in high-demand environments. Physical design contributes to installation efficiency. Ferrule end x ferrule end connections simplify insertion into traditional Bussmann-style holders, while nickel-plated bronze endcaps resist corrosion in harsh environments. The compact 1.5 inch length and 0.41 inch width fit tight panel spaces, reducing enclosure redesigns. The standard packaging streamlines stocking and procurement, reducing SKU proliferation and procurement errors. Compliance and safety are integral: CE Marked and RoHS Compliant, FNQ-25 meets European regulatory expectations and environmental requirements. For teams pursuing lean maintenance, non-indicating fuse status simplifies visual checks in high-density panels, reducing fault-finding time. The Bussmann series heritage provides confidence in long-term spare parts compatibility and service life. Compatibility and lifecycle give added value. The FNQ-25 aligns with Eaton/Bussmann datasheets and available specifications, including the 1.5 in length and 0.41 in width, enabling predictable panel fit and repeatable BOMs. Engineers can standardize on a single device for motor protection across products, delivering consistent performance and lower total cost of ownership. In practice, this standardization supports faster commissioning, easier maintenance, and predictable spare parts planning in manufacturing environments.