Bulk discount available
View bulk pricing optionsSubtotal (1 pack of 10 units)*
£3.45
(exc. VAT)
£4.14
(inc. VAT)
FREE delivery for orders over £60.00
In Stock
- 930 unit(s) ready to ship
- Plus 40 unit(s) ready to ship from another location
- Plus 3,500 unit(s) shipping from 20 August 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit | Per Pack* |
|---|---|---|
| 10 - 140 | £0.345 | £3.45 |
| 150 - 490 | £0.296 | £2.96 |
| 500 - 990 | £0.291 | £2.91 |
| 1000 - 2490 | £0.283 | £2.83 |
| 2500 + | £0.277 | £2.77 |
*price indicative
- RS Stock No.:
- 712-7486
- Mfr. Part No.:
- RKEF050
- 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 | 1A | |
| Time to Trip | 0.8s | |
| Hold Current | 0.5A | |
| Length | 7.1mm | |
| Height | 11.43mm | |
| Minimum Resistance | 0.32Ω | |
| Minimum Operating Temperature | -40°C | |
| Maximum Resistance | 900mΩ | |
| Maximum Operating Temperature | 60°C | |
| Power Dissipation | 1W | |
| Standards/Approvals | TUV, RoHS, CSA, UL | |
| Series | RKEF | |
| Lead Orientation | Radial | |
| Select all | ||
|---|---|---|
Brand Littelfuse | ||
Product Type Resettable Fuse | ||
Trip Current 1A | ||
Time to Trip 0.8s | ||
Hold Current 0.5A | ||
Length 7.1mm | ||
Height 11.43mm | ||
Minimum Resistance 0.32Ω | ||
Minimum Operating Temperature -40°C | ||
Maximum Resistance 900mΩ | ||
Maximum Operating Temperature 60°C | ||
Power Dissipation 1W | ||
Standards/Approvals TUV, RoHS, CSA, UL | ||
Series RKEF | ||
Lead Orientation Radial | ||
- COO (Country of Origin):
- CN
Tyco PolySwitch™ PTC Devices RKEF Series
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