Bulk discount available
Subtotal (1 pack of 10 units)*
£5.76
(exc. VAT)
£6.91
(inc. VAT)
FREE delivery for orders over £50.00
In Stock
- 910 unit(s) ready to ship
- Plus 100 unit(s) ready to ship from another location
- Plus 90 unit(s) shipping from 27 October 2025
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit | Per Pack* |
|---|---|---|
| 10 - 140 | £0.576 | £5.76 |
| 150 - 490 | £0.555 | £5.55 |
| 500 - 990 | £0.544 | £5.44 |
| 1000 - 2490 | £0.526 | £5.26 |
| 2500 + | £0.514 | £5.14 |
*price indicative
- RS Stock No.:
- 712-7496
- Mfr. Part No.:
- RKEF250
- 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 | |
| Trip Current | 5A | |
| Voltage Rating | 60V | |
| Time to Trip | 15.6s | |
| Hold Current | 2.5A | |
| Maximum Current | 40 A | |
| Length | 14mm | |
| Height | 20.6mm | |
| Width | 3mm | |
| Minimum Resistance | 0.04Ω | |
| Maximum Resistance | 140mΩ | |
| Power Dissipation | 2.8W | |
| Lead Orientation | Radial | |
Select all | ||
|---|---|---|
Brand Littelfuse | ||
Trip Current 5A | ||
Voltage Rating 60V | ||
Time to Trip 15.6s | ||
Hold Current 2.5A | ||
Maximum Current 40 A | ||
Length 14mm | ||
Height 20.6mm | ||
Width 3mm | ||
Minimum Resistance 0.04Ω | ||
Maximum Resistance 140mΩ | ||
Power Dissipation 2.8W | ||
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
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
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
Power supplies and transformers
Power switching devices
Automotive and medical equipment
Instrumentation and control
Computers and peripherals
Audio visual and telecommunications