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Littelfuse FLQ Series 500V/300VDC Slo-Blo Time-Delay Midget Fuse
The Littelfuse FLQ Series is a family of Slo-Blo (Time-Delay) fuses built in the compact Midget/5AG package for supplemental protection in control and motor circuits. Rated 500VAC and 300VDC with a 10000A@500VAC interrupting rating, the FLQ Series is available in ampere ratings from 1A to 9A -- including 1A, 1.25A, 1.6A, 2A, 3A, 5A, and 9A -- to match a wide range of circuit loads. UL and CSA 500 volt ratings allow the FLQ Series to be applied on 480 volt circuits, making it a dependable choice for control power transformers, solenoids, and small motor supplemental protection.
Key Features
- Ampere Rating Range: Available from 1A to 9A (1A, 1.25A, 1.6A, 2A, 3A, 5A, 9A) for precise supplemental protection across varying circuit loads.
- Voltage Rating: 500VAC / 300VDC construction supports a wide range of control circuit applications.
- Time-Delay Operation: Slo-Blo/Time Lag (T)/Time Delay opening characteristic rides through high inrush currents without nuisance operation.
- Interrupting Rating: 10000A@500VAC for safe clearing of high fault currents.
- Package Size: Midget/5AG form factor fits standard midget fuse holders and blocks.
- UL and CSA 500 Volt Ratings: Permit use on 480 volt circuits for added application flexibility.
- Supplemental Motor Protection: Provides supplemental protection to small motors alongside dedicated branch-circuit protection.
- Control Circuit Protection: Protects control power transformers, solenoids, and circuits with high inrush currents.
Certifications & Compliance
- UL 500 Volt Rating
- CSA 500 Volt Rating
- Suitable for Use on 480 Volt Circuits
Technical Specifications
- Series: FLQ
- VAC (V): 500
- VDC (V): 300
- Ampere Rating Options (A): 1, 1.25, 1.6, 2, 3, 5, 9
- Opening: Slo-Blo/Time Lag (T)/Time Delay
- Interrupting Rating: 10000A@500VAC
- Package Size: Midget/5AG
Typical Applications
- Small Motor Supplemental Protection
- Control Power Transformer Circuits
- Solenoid Circuits
- High Inrush Current Circuits
- 480V/500V Industrial Control Panels
Why Littelfuse?
Littelfuse backs the FLQ Series with UL and CSA 500 volt ratings, a 10000A@500VAC interrupting rating, and a time-delay design purpose-built to withstand inrush without nuisance opening. With ampere ratings spanning 1A to 9A, engineers and electricians can specify the exact FLQ Series fuse needed for motors, control power transformers, and solenoid circuits, all in a compact Midget/5AG package delivering dependable, code-compliant performance.
Manufacturer Resources
Spec Sheet
Product Specs
- Series:
- FLQ
- Product Type:
- Fuse
- Voltage Rating:
- 500VAC/300VDC
- Amperage Rating:
- 1A-9A
- Standards:
- UL-CSA
- Department:
- Electrical
- Product Group:
- Wiring Devices