Subtotal (1 pack of 10 units)*
£2.68
(exc. VAT)
£3.22
(inc. VAT)
FREE delivery for orders over £50.00
In Stock
- 1,070 unit(s) ready to ship
- Plus 160 unit(s) ready to ship from another location
- Plus 1,690 unit(s) shipping from 10 October 2025
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit | Per Pack* |
|---|---|---|
| 10 + | £0.268 | £2.68 |
*price indicative
- RS Stock No.:
- 647-8594
- Mfr. Part No.:
- MF-R250-0-10
- Brand:
- Bourns
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Bourns | |
| Trip Current | 5A | |
| Voltage Rating | 30V | |
| Time to Trip | 10.3s | |
| Hold Current | 2.5A | |
| Maximum Current | 40 A | |
| Length | 12mm | |
| Height | 18.3mm | |
| Width | 3mm | |
| Minimum Resistance | 0.025Ω | |
| Maximum Resistance | 70mΩ | |
| Power Dissipation | 1.2W | |
| Minimum Operating Temperature | -40°C | |
| Maximum Operating Temperature | +85°C | |
| Lead Orientation | Radial | |
Select all | ||
|---|---|---|
Brand Bourns | ||
Trip Current 5A | ||
Voltage Rating 30V | ||
Time to Trip 10.3s | ||
Hold Current 2.5A | ||
Maximum Current 40 A | ||
Length 12mm | ||
Height 18.3mm | ||
Width 3mm | ||
Minimum Resistance 0.025Ω | ||
Maximum Resistance 70mΩ | ||
Power Dissipation 1.2W | ||
Minimum Operating Temperature -40°C | ||
Maximum Operating Temperature +85°C | ||
Lead Orientation Radial | ||
MF-R Series
Radial leaded devices
Rated at 40A except MF-R1100 which is rated at 100A
Cured, flame retardant epoxy polymer insulating material meets UL 94V-0 requirements
Rated at 40A except MF-R1100 which is rated at 100A
Cured, flame retardant epoxy polymer insulating material meets UL 94V-0 requirements
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