Subtotal (1 pack of 10 units)*
£4.32
(exc. VAT)
£5.18
(inc. VAT)
FREE delivery for orders over £60.00
In Stock
- Plus 910 unit(s) shipping from 27 April 2026
- Plus 100 unit(s) shipping from 27 April 2026
- Plus 1,390 unit(s) shipping from 04 May 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit | Per Pack* |
|---|---|---|
| 10 + | £0.432 | £4.32 |
*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 | |
| Product Type | Resettable Fuse | |
| Voltage | 30 V | |
| Time to Trip | 10.3s | |
| Current Rating | 40 A | |
| Hold Current | 2.5A | |
| Length | 12mm | |
| Height | 18.3mm | |
| Width | 3 mm | |
| Minimum Resistance | 0.025Ω | |
| Minimum Operating Temperature | -40°C | |
| Maximum Resistance | 70mΩ | |
| Maximum Operating Temperature | 85°C | |
| Power Dissipation | 1.2W | |
| Standards/Approvals | RoHS, UL | |
| Lead Diameter | 0.81mm | |
| Lead Orientation | Radial | |
| Series | MFR | |
| Select all | ||
|---|---|---|
Brand Bourns | ||
Trip Current 5A | ||
Product Type Resettable Fuse | ||
Voltage 30 V | ||
Time to Trip 10.3s | ||
Current Rating 40 A | ||
Hold Current 2.5A | ||
Length 12mm | ||
Height 18.3mm | ||
Width 3 mm | ||
Minimum Resistance 0.025Ω | ||
Minimum Operating Temperature -40°C | ||
Maximum Resistance 70mΩ | ||
Maximum Operating Temperature 85°C | ||
Power Dissipation 1.2W | ||
Standards/Approvals RoHS, UL | ||
Lead Diameter 0.81mm | ||
Lead Orientation Radial | ||
Series MFR | ||
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
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