Bulk discount available
Subtotal (1 pack of 10 units)*
£10.84
(exc. VAT)
£13.01
(inc. VAT)
FREE delivery for orders over £60.00
In Stock
- Plus 360 unit(s) shipping from 04 May 2026
- Plus 750 unit(s) shipping from 11 May 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit | Per Pack* |
|---|---|---|
| 10 - 140 | £1.084 | £10.84 |
| 150 - 490 | £0.937 | £9.37 |
| 500 - 990 | £0.914 | £9.14 |
| 1000 - 2490 | £0.888 | £8.88 |
| 2500 + | £0.866 | £8.66 |
*price indicative
- RS Stock No.:
- 712-7503
- Mfr. Part No.:
- RKEF500
- 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 | 10A | |
| Voltage | 60 V | |
| Time to Trip | 28s | |
| Current Rating | 40 A | |
| Hold Current | 5A | |
| Length | 24.1mm | |
| Height | 29mm | |
| Width | 3 mm | |
| Minimum Resistance | 0.012Ω | |
| Minimum Operating Temperature | -40°C | |
| Maximum Resistance | 50mΩ | |
| Maximum Operating Temperature | 60°C | |
| Power Dissipation | 5W | |
| Standards/Approvals | UL, TUV, RoHS, CSA | |
| Lead Orientation | Radial | |
| Series | RKEF | |
| Select all | ||
|---|---|---|
Brand Littelfuse | ||
Product Type Resettable Fuse | ||
Trip Current 10A | ||
Voltage 60 V | ||
Time to Trip 28s | ||
Current Rating 40 A | ||
Hold Current 5A | ||
Length 24.1mm | ||
Height 29mm | ||
Width 3 mm | ||
Minimum Resistance 0.012Ω | ||
Minimum Operating Temperature -40°C | ||
Maximum Resistance 50mΩ | ||
Maximum Operating Temperature 60°C | ||
Power Dissipation 5W | ||
Standards/Approvals UL, TUV, RoHS, CSA | ||
Lead Orientation Radial | ||
Series RKEF | ||
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
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