Littlefuse’s JLLS series fuses are available in non-plated and silver-plated terminations.
The primary difference between plated and unplated fuses is the silver plating, which helps prevent corrosion. Electrically, they function the same, but the addition of silver plating increases durability in corrosive environments.
When selecting any fuse, key consideration include:
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Fuse Sizing: A safety factor is applied to the maximum running (steady state) current to ensure the fuse can handle potential surges.
For example, multiplying the max running current by 1.25 provides an appropriate fuse rating. (round up to the nearest standard fuse size)
When choosing a fuse, you should also consider other parts of the system, such as circuit breakers. The breaker manufacturer will need to provide guidance on this, as they conduct the coordination testing with fuses. -
Time-Delay Fuses for Motor Protection: Motor systems, especially with high inductance like hydraulic motors, require time-delay fuses to handle startup surges.
Fast-acting fuses may open prematurely due to inductive load surge current.
Choosing a fuse involves more than just matching the electrical rating. Consider system inductance, breaker coordination, and motor protection. Time-delay fuses are best for inductive loads.
Collector_Cards_ReferenceGuide_LittelFuse.pdf (720.7 KB)
Applicable Part Numbers
| DigiKey Part Number | Manufacturer Part Number |
|---|---|
| JLLS060.TXP-ND | JLLS060.TXP |
| JLLS080.VXP-ND | JLLS080.VXP |
| 18-JLLS150.X-ND | JLLS150.X |
| JLLS400.X-ND | JLLS400.X |
| JLLS070.V-ND | JLLS070.V |
| F11373-ND | JLLS030.T |
| F11372-ND | JLLS015.T |
| JLLS020.T-ND | JLLS020.T |
| F11374-ND | JLLS040.T |
| F11247-ND | JLLS100.V |
| JLLS100.VXP-ND | JLLS100.VXP |
| F11997-ND | JLLS200.X |
| JLLS110.X-ND | JLLS110.X |
| JLLS175.X-ND | JLLS175.X |
| JLLS006.TXP-ND | JLLS006.TXP |
| JLLS003.T-ND | JLLS003.T |
| JLLS002.T-ND | JLLS002.T |
| JLLS125.X-ND | JLLS125.X |
| JLLS225.X-ND | JLLS225.X |
| JLLS1000X-ND | JLLS1000X |
| JLLS030.TXP-ND | JLLS030.TXP |
| JLLS006.T-ND | JLLS006.T |
| JLLS025.T-ND | JLLS025.T |
| JLLS010.TXP-ND | JLLS010.TXP |
| JLLS015.TXP-ND | JLLS015.TXP |
| JLLS025.TXP-ND | JLLS025.TXP |
| JLLS001.T-ND | JLLS001.T |
| JLLS020.TXP-ND | JLLS020.TXP |
| JLLS010.T-ND | JLLS010.T |
| JLLS001.TXP-ND | JLLS001.TXP |
| JLLS002.TXP-ND | JLLS002.TXP |
| JLLS003.TXP-ND | JLLS003.TXP |
| JLLS060.T-ND | JLLS060.T |
| JLLS035.T-ND | JLLS035.T |
| JLLS050.TXP-ND | JLLS050.TXP |
| JLLS035.TXP-ND | JLLS035.TXP |
| JLLS045.T-ND | JLLS045.T |
| JLLS050.T-ND | JLLS050.T |
| JLLS040.TXP-ND | JLLS040.TXP |
| JLLS045.TXP-ND | JLLS045.TXP |
| JLLS070.VXP-ND | JLLS070.VXP |
| JLLS080.V-ND | JLLS080.V |
| JLLS090.V-ND | JLLS090.V |
| JLLS090.VXP-ND | JLLS090.VXP |
| JLLS150.XXP-ND | JLLS150.XXP |
| JLLS125.XXP-ND | JLLS125.XXP |
| JLLS200.XXP-ND | JLLS200.XXP |
| JLLS110.XXP-ND | JLLS110.XXP |
| JLLS175.XXP-ND | JLLS175.XXP |
| JLLS250.X-ND | JLLS250.X |
| JLLS300.X-ND | JLLS300.X |
| JLLS250.XXP-ND | JLLS250.XXP |
| JLLS300.XXP-ND | JLLS300.XXP |
| JLLS225.XXP-ND | JLLS225.XXP |
| JLLS350.X-ND | JLLS350.X |
| JLLS350.XXP-ND | JLLS350.XXP |
| JLLS400.XXP-ND | JLLS400.XXP |
| JLLS450.X-ND | JLLS450.X |
| JLLS500.X-ND | JLLS500.X |
| JLLS450.XXP-ND | JLLS450.XXP |
| JLLS600.X-ND | JLLS600.X |
| JLLS500.XXP-ND | JLLS500.XXP |
| JLLS700.X-ND | JLLS700.X |
| JLLS600.XXP-ND | JLLS600.XXP |
| JLLS700.XXP-ND | JLLS700.XXP |
| JLLS800.X-ND | JLLS800.X |
| JLLS800.XXP-ND | JLLS800.XXP |
| JLLS1100X-ND | JLLS1100X |
| JLLS900.X-ND | JLLS900.X |
| JLLS1200X-ND | JLLS1200X |
| JLLS1000XXP-ND | JLLS1000XXP |
| JLLS1100XXP-ND | JLLS1100XXP |
| JLLS900.XXP-ND | JLLS900.XXP |
| JLLS1200XXP-ND | JLLS1200XXP |