POWR-SPEED® Line of High-Speed (Semiconductor) Blade Fuses – PSR Series
Littelfuse's PSR series high-speed square body semiconductor fuses are designed for protection of power semiconductor devices
Littelfuse PSR series high-speed square body fuses are specially designed for protection of power semiconductor devices such as diodes, TRIACs, SCRs, MOSFETs, IGBT-based applications, and other solid-state devices that are typically designed into power conversion and power conditioning equipment.
- Extremely current limiting
- Low watt loss
- Universal blade mounting
- Optimized design
- RoHS and REACH compliant
- Optimized performance
- Reduces peak let-through current and let-through energy (I2t)
- Less energy wasted during operation
- Laser-etched resistance values eliminate labels that erode over time
- Quick and easy field replacement
- Better energy efficiency and improved protection levels
- Environmentally friendly, offering greater acceptance globally
- Industrial electronics
- Renewable energy
- EV infrastructure
- Power conversion devices
- DC systems
- Heaters and power supplies
- Battery protection applications
- Electric vehicle charging stations
PSR030 Series
| Image | Manufacturer Part Number | Description | Voltage Rating - AC | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|---|
![]() | ![]() | PSR030DL0050Z | FUSE SQUARE 50A 700VAC/600VDC | 700 VAC | 0 - Immediate | $198.52 | View Details |
![]() | ![]() | PSR030DL0200Z | FUSE SQUARE 200A 700VAC/600VDC | 700 VAC | 0 - Immediate 12 - Factory Stock | $245.86 | View Details |
![]() | ![]() | PSR030DS0500Z | FUSE SQUARE 500A 700VAC/600VDC | 700 VAC | 3 - Immediate | $254.80 | View Details |
![]() | ![]() | PSR030UL0100Z | FUSE SQUARE 100A 700VAC/600VDC | 700 VAC | 0 - Immediate | $245.86 | View Details |
![]() | ![]() | PSR030UL0250Z | FUSE SQUARE 250A 700VAC/600VDC | 700 VAC | 0 - Immediate 3 - Factory Stock | $206.02 | View Details |
![]() | ![]() | PSR030UL0500Z | FUSE SQUARE 500A 700VAC/600VDC | 700 VAC | 0 - Immediate | $220.95 | View Details |
PSR031 Series
| Image | Manufacturer Part Number | Description | Voltage Rating - AC | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|---|
![]() | ![]() | PSR031DL0250Z | FUSE SQUARE 250A 700VAC/600VDC | 700 VAC | 0 - Immediate 3 - Factory Stock | $272.56 | View Details |
![]() | ![]() | PSR031DL0630Z | FUSE SQUARE 630A 700VAC/600VDC | 700 VAC | 0 - Immediate | $286.99 | View Details |
![]() | ![]() | PSR031UL0200Z | FUSE SQUARE 200A 700VAC/600VDC | 700 VAC | 4 - Immediate 6 - Factory Stock | $272.56 | View Details |
![]() | ![]() | PSR031UL0400Z | FUSE SQUARE 400A 700VAC/600VDC | 700 VAC | 0 - Immediate 3 - Factory Stock | $272.56 | View Details |
![]() | ![]() | PSR031UL0500Z | FUSE SQUARE 500A 700VAC/600VDC | 700 VAC | 0 - Immediate 9 - Factory Stock | $243.17 | View Details |
![]() | ![]() | PSR031UL0700Z | FUSE SQUARE 700A 700VAC/600VDC | 700 VAC | 0 - Immediate | $342.56 | View Details |
![]() | ![]() | PSR031US0250Z | FUSE SQUARE 250A 700VAC/600VDC | 700 VAC | 0 - Immediate 6 - Factory Stock | $263.70 | View Details |
![]() | ![]() | PSR031US0500Z | FUSE SQUARE 500A 700VAC/600VDC | 700 VAC | 0 - Immediate 21 - Factory Stock | $281.41 | View Details |
PSR032 Series
| Image | Manufacturer Part Number | Description | Voltage Rating - AC | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|---|
![]() | ![]() | PSR032DL0700X | FUSE SQUARE 700A 700VAC/600VDC | 700 VAC | 0 - Immediate | $301.43 | View Details |
![]() | ![]() | PSR032DS0500X | FUSE SQUARE 500A 700VAC/600VDC | 700 VAC | 0 - Immediate 8 - Factory Stock | $299.00 | View Details |
![]() | ![]() | PSR032UL0630X | FUSE SQUARE 630A 700VAC/600VDC | 700 VAC | 0 - Immediate | $301.43 | View Details |
![]() | ![]() | PSR032UL1000X | FUSE SQUARE 1KA 700VAC/600VDC | 700 VAC | 10 - Immediate 4 - Factory Stock | $377.00 | View Details |
![]() | ![]() | PSR032US0450X | FUSE SQUARE 450A 700VAC/600VDC | 700 VAC | 0 - Immediate 4 - Factory Stock | $284.76 | View Details |
![]() | ![]() | PSR032US0500X | FUSE SQUARE 500A 700VAC/600VDC | 700 VAC | 0 - Immediate 2 - Factory Stock | $284.76 | View Details |
![]() | ![]() | PSR032US0800X | FUSE SQUARE 800A 700VAC/600VDC | 700 VAC | 2 - Immediate 7 - Factory Stock | $359.83 | View Details |
PSR033 Series
| Image | Manufacturer Part Number | Description | Voltage Rating - AC | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|---|
![]() | ![]() | PSR033DL0500X | FUSE SQUARE 500A 700VAC/600VDC | 700 VAC | 0 - Immediate 2 - Factory Stock | $407.72 | View Details |
![]() | ![]() | PSR033DL1000X | FUSE SQUARE 1KA 700VAC/600VDC | 700 VAC | 0 - Immediate | $439.84 | View Details |
![]() | ![]() | PSR033UL0500X | FUSE SQUARE 500A 700VAC/600VDC | 700 VAC | 0 - Immediate 4 - Factory Stock | $428.11 | View Details |
![]() | ![]() | PSR033UL1000X | FUSE SQUARE 1KA 700VAC/600VDC | 700 VAC | 0 - Immediate | $461.82 | View Details |
![]() | ![]() | PSR033UL1250X | FUSE SQUARE 1.25KA 700VAC/500VDC | 700 VAC | 0 - Immediate 75 - Factory Stock | $439.84 | View Details |
![]() | ![]() | PSR033US0500X | FUSE SQUARE 500A 700VAC/600VDC | 700 VAC | 0 - Immediate 8 - Factory Stock | $399.65 | View Details |
![]() | ![]() | PSR033US0700X | FUSE SQUARE 700A 700VAC/600VDC | 700 VAC | 0 - Immediate | $399.65 | View Details |
![]() | ![]() | PSR033US0800X | FUSE SQUARE 800A 700VAC/600VDC | 700 VAC | 0 - Immediate 2 - Factory Stock | $399.65 | View Details |
PSR070 Series
| Image | Manufacturer Part Number | Description | Voltage Rating - AC | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|---|
![]() | ![]() | PSR070DL0200Z | FUSE SQUARE 200A 1.3KVAC/1KVDC | 1.3 kVAC | 0 - Immediate 3 - Factory Stock | $308.65 | View Details |
![]() | ![]() | PSR070UL0050Z | FUSE SQUARE 50A 1.3KVAC/1KVDC | 1.3 kVAC | 0 - Immediate 42 - Factory Stock | $333.90 | View Details |
![]() | ![]() | PSR070UL0100Z | FUSE SQ 100A 1.3KVAC/1KVDC 1=1PC | 1.3 kVAC | 78 - Immediate 27 - Factory Stock | $333.90 | View Details |
![]() | ![]() | PSR070UL0125Z | FUSE SQUARE 125A 1.3KVAC/1KVDC | 1.3 kVAC | 48 - Immediate | $368.42 | View Details |
![]() | ![]() | PSR070UL0200Z | FUSE SQUARE 200A 1.3KVAC/1KVDC | 1.3 kVAC | 12 - Immediate | $368.42 | View Details |
![]() | ![]() | PSR070UL0250Z | FUSE SQUARE 250A 1.3KVAC/1KVDC | 1.3 kVAC | 8 - Immediate | $368.42 | View Details |
PSR071 Series
| Image | Manufacturer Part Number | Description | Voltage Rating - AC | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|---|
![]() | ![]() | PSR071UL0250Z | FUSE SQUARE 250A 1.3KVAC/1KVDC | 1.3 kVAC | 3 - Immediate 3 - Factory Stock | $385.57 | View Details |
![]() | ![]() | PSR071UL0450Z | FUSE SQUARE 450A 1.3KVAC/1KVDC | 1.3 kVAC | 0 - Immediate 3 - Factory Stock | $351.52 | View Details |
PSR072 Series
| Image | Manufacturer Part Number | Description | Voltage Rating - AC | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|---|
![]() | ![]() | PSR072DL0400X | FUSE SQUARE 400A 1.3KVAC/1KVDC | 1.3 kVAC | 5 - Immediate 10 - Factory Stock | $436.56 | View Details |
![]() | ![]() | PSR072DL0500X | FUSE SQUARE 500A 1.3KVAC/1KVDC | 1.3 kVAC | 1 - Immediate 230 - Factory Stock | $478.60 | View Details |
![]() | ![]() | PSR072UL0250X | FUSE SQUARE 250A 1.3KVAC/1KVDC | 1.3 kVAC | 0 - Immediate 21 - Factory Stock | $436.56 | View Details |
![]() | ![]() | PSR072UL0350X | FUSE SQUARE 350A 1.3KVAC/1KVDC | 1.3 kVAC | 0 - Immediate | $415.76 | View Details |
![]() | ![]() | PSR072UL0450X | FUSE SQUARE 450A 1.3KVAC/1KVDC | 1.3 kVAC | 1 - Immediate 5 - Factory Stock | $478.60 | View Details |
![]() | ![]() | PSR072UL0500X | FUSE SQUARE 500A 1.3KVAC/1KVDC | 1.3 kVAC | 1 - Immediate 42 - Factory Stock | $478.60 | View Details |
PSR073 Series
| Image | Manufacturer Part Number | Description | Voltage Rating - AC | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|---|
![]() | ![]() | PSR073DL0500X | FUSE SQUARE 500A 1.3KVAC/1KVDC | 1.3 kVAC | 0 - Immediate | $470.21 | View Details |
![]() | ![]() | PSR073DL0630X | FUSE SQUARE 630A 1.3KVAC/1KVDC | 1.3 kVAC | 0 - Immediate 9 - Factory Stock | $486.95 | View Details |
![]() | ![]() | PSR073UL0350X | FUSE SQUARE 350A 1.3KVAC/1KVDC | 1.3 kVAC | 1 - Immediate 16 - Factory Stock | $470.21 | View Details |
![]() | ![]() | PSR073UL0450X | FUSE SQUARE 450A 1.3KVAC/1KVDC | 1.3 kVAC | 1 - Immediate | $470.21 | View Details |
![]() | ![]() | PSR073UL0500X | FUSE SQUARE 500A 1.3KVAC/1KVDC | 1.3 kVAC | 1 - Immediate 3 - Factory Stock | $470.21 | View Details |
![]() | ![]() | PSR073UL0700X | FUSE SQUARE 700A 1.3KVAC/1KVDC | 1.3 kVAC | 0 - Immediate | $495.49 | View Details |























