Littelfuse 3 A Resettable Fuse, 72 V
- RS Stock No.:
- 517-6742
- Distrelec Article No.:
- 304-42-548
- Mfr. Part No.:
- RXEF300
- Brand:
- Littelfuse
Bulk discount available
Subtotal (1 pack of 10 units)*
£6.57
(exc. VAT)
£7.88
(inc. VAT)
Add 90 units to get free delivery
In Stock
- 70 unit(s) ready to ship
- Plus 940 unit(s) shipping from 25 February 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit | Per Pack* |
|---|---|---|
| 10 - 40 | £0.657 | £6.57 |
| 50 - 240 | £0.571 | £5.71 |
| 250 - 490 | £0.553 | £5.53 |
| 500 - 990 | £0.54 | £5.40 |
| 1000 + | £0.527 | £5.27 |
*price indicative
- RS Stock No.:
- 517-6742
- Distrelec Article No.:
- 304-42-548
- Mfr. Part No.:
- RXEF300
- Brand:
- Littelfuse
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Littelfuse | |
| Product Type | Resettable Fuse | |
| Trip Current | 6A | |
| Voltage | 72 V | |
| Current Rating | 40 A | |
| Time to Trip | 19.8s | |
| Hold Current | 3A | |
| Length | 23.9mm | |
| Height | 28.6mm | |
| Width | 3 mm | |
| Minimum Resistance | 0.04Ω | |
| Minimum Operating Temperature | -40°C | |
| Maximum Resistance | 100mΩ | |
| Maximum Operating Temperature | 60°C | |
| Power Dissipation | 2.8W | |
| Standards/Approvals | UL, CSA, CQC, TUV, RoHS | |
| Lead Orientation | Radial | |
| Series | RXEF | |
| Select all | ||
|---|---|---|
Brand Littelfuse | ||
Product Type Resettable Fuse | ||
Trip Current 6A | ||
Voltage 72 V | ||
Current Rating 40 A | ||
Time to Trip 19.8s | ||
Hold Current 3A | ||
Length 23.9mm | ||
Height 28.6mm | ||
Width 3 mm | ||
Minimum Resistance 0.04Ω | ||
Minimum Operating Temperature -40°C | ||
Maximum Resistance 100mΩ | ||
Maximum Operating Temperature 60°C | ||
Power Dissipation 2.8W | ||
Standards/Approvals UL, CSA, CQC, TUV, RoHS | ||
Lead Orientation Radial | ||
Series RXEF | ||
PolySwitch™ RXE Series
TE PolySwitch™ RXE represents series of low hold current (down to 50mA) and high voltage rating (up to 72V) devices. Typically used in printers, satellite video receivers, industrial controls, transformers, computer motherboards, modems, USB hubs, ports and peripherals, game machines, phones, fax machines, analog and digital line cards applications.
Current ratings from 50mA to 15A
Voltage ratings from 6V (computer and electronic applications) to 99V
Fast time-to-trip
Low resistance
RoHS compliant
Halogen free
PCB Wire Ended
All are UL, CSA, TUV approved
Protection of electrical and electronic circuits against excessive currents
Rapid switch from low resistance state to very high resistance with electrical overload or short circuit
Quick and automatic reset and return to low resistance state when fault condition corrected and power removed
Features:
Automatically resets itself thousands of times
Maintenance free
Small size and no fuseholder required
Main applications:
Security systems
Power supplies and transformers
Power switching devices
Automotive and medical equipment
Instrumentation and control
Computers and peripherals
Audio visual and telecommunications