Eaton FNQ-12 Fuse - 12A, 10kAIC at 500V - CE RoHS
Part Number: FNQ-12
Quick Summary
The Eaton FNQ-12 fuse is a time-delay protection device for electrical circuits, delivering reliable protection in motor control panels and transformer-driven loads. This fuse helps prevent nuisance trips during motor startup and inrush events, a common challenge in industrial environments. It carries CE marking and RoHS compliance, ensuring regulatory alignment across European and global installations. With a 12 A rating and 10 kAIC interrupt capability at 500 V, FNQ-12 provides robust protection for high-demand equipment. Choosing FNQ-12 supports stock consolidation, easier maintenance planning, and predictable protection across critical loads, while maintaining cost-efficient procurement for panel builders and system integrators.
Product Information
Extended Description
FNQ-12 Eaton: Eaton Bussmann series FNQ fuse, Time-delay, Motor control transformers, Circuits with in-rush currents, 12 A, Non-indicating, Ferrule end x ferrule end, 10 kAIC at 500 Vac, Nickel-plated bronze endcap, Standard, 500 V
Product Name
Eaton Bussmann series FNQ fuse
Catalog Number
FNQ-12
UPC
051712786126
Product Length/Depth
1.5 in
Product Height
0.41 in
Product Width
0.41 in
Product Weight
0.175 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Amperage Rating
12 A
Interrupt rating
10 kAIC at 500 Vac
Voltage rating
500 V
Material
Nickel-plated bronze endcap
Packaging type
Standard
Connection
Ferrule end x ferrule end
Fuse indicator
Non-indicating
Special features
Non-indicating
Bussmann series complete full line catalog no. 1007
Bussmann series Fuseology
Eaton Specification Sheet - FNQ-12
FNQ-12~BUSS MIDGET FUSE
Datasheet - FNQ-30
Feature → Business Impact → Application: Time-delay operation tolerates brief overloads during motor start-up, reducing nuisance trips and enabling smoother equipment ramp-up in servo drives and motor control centers. This translates to lower downtime and higher productivity in manufacturing lines and process control panels. Feature → Business Impact → Application: 12 A rating with a 10 kAIC interrupt at 500 V delivers strong protection for feeders and transformers without compromising service life, supporting reliable protection in light to medium fault scenarios across automation cabinets. Feature → Business Impact → Application: Ferrule-end ferrule connections with nickel-plated bronze endcaps provide vibration resistance and corrosion protection, simplifying field wiring and ensuring durable, maintenance-friendly panel installations in harsh industrial settings. Feature → Business Impact → Application: Non-indicating design reduces cost and complexity in simple protection schemes where status indication is monitored elsewhere, enabling lean control panels for compact machines and line start-ups. Feature → Business Impact → Application: Wide 500 V rating and CE RoHS compliance ensure compatibility with global electrical standards, easing procurement and enabling cross-border deployments for OEMs and system integrators. Feature → Business Impact → Application: Standard packaging and Bussmann series lineage offer predictable lead times and reliable stocking, reducing procurement risk for maintenance services and spare-part strategies in utilities and highly automated facilities.
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FAQs
FNQ-12 installs like a standard ferrule-end fuse in a compatible holder or just the ferrule-to-ferrule path within the panel. Ensure terminal lugs or holders accommodate ferrule ends, tighten connections to specification, and verify proper seating. Use compatible Bussmann series accessories for secure mechanical fit and consistent electrical contact in motor control cabinets.
FNQ-12 is a time-delay (slowly responding) fuse rated at 12 A with a 10 kAIC interrupt rating at 500 V, designed to tolerate brief start-up surges. This minimizes nuisance tripping during motor energization while still delivering fast protection against sustained faults, which is ideal for motor control transformers and feeder circuits in automation panels.
Yes. The FNQ-12 carries CE marking and RoHS compliance, signaling conformity with European health, safety, and environmental requirements and restrictions on hazardous substances. This facilitates regulatory approvals for European installations and simplifies cross-border procurement for OEMs and integrators deploying in multi-country facilities.
If fault current exceeds 12 A and persists beyond the fuse’s operating time, the FNQ-12 interrupts the circuit, protecting conductors and equipment. The 10 kAIC rating indicates robust performance against high-energy faults, while the 500 V rating supports safe operation in typical industrial power distribution scenarios.
FNQ-12 uses nickel-plated bronze endcaps and ferrule ends for durable connections, reducing corrosion concerns in damp or dusty environments. For maintenance, inspect for signs of overheating or discoloration during routine panel checks, replace upon tripping or visible wear, and keep spares aligned with the standard Bussmann series catalog for fast replenishment.