Bulk discount available
Subtotal (1 pack of 10 units)*
£2.98
(exc. VAT)
£3.58
(inc. VAT)
FREE delivery for orders over £60.00
In Stock
- 270 unit(s) ready to ship
- Plus 130 unit(s) ready to ship from another location
- Plus 2,200 unit(s) shipping from 01 May 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit | Per Pack* |
|---|---|---|
| 10 - 90 | £0.298 | £2.98 |
| 100 - 490 | £0.288 | £2.88 |
| 500 - 1490 | £0.281 | £2.81 |
| 1500 - 2490 | £0.273 | £2.73 |
| 2500 + | £0.268 | £2.68 |
*price indicative
- RS Stock No.:
- 647-8443
- Mfr. Part No.:
- MF-R025
- 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 | |
| Product Type | Resettable Fuse | |
| Trip Current | 500mA | |
| Voltage | 60 V | |
| Current Rating | 40 A | |
| Time to Trip | 2.5s | |
| Hold Current | 0.25A | |
| Length | 7.4mm | |
| Height | 12.7mm | |
| Width | 3.1 mm | |
| Minimum Resistance | 1Ω | |
| Minimum Operating Temperature | -40°C | |
| Maximum Resistance | 3Ω | |
| Maximum Operating Temperature | 85°C | |
| Power Dissipation | 0.45W | |
| Standards/Approvals | RoHS, UL | |
| Series | MFR | |
| Lead Orientation | Radial | |
| Lead Diameter | 0.51mm | |
| Select all | ||
|---|---|---|
Brand Bourns | ||
Product Type Resettable Fuse | ||
Trip Current 500mA | ||
Voltage 60 V | ||
Current Rating 40 A | ||
Time to Trip 2.5s | ||
Hold Current 0.25A | ||
Length 7.4mm | ||
Height 12.7mm | ||
Width 3.1 mm | ||
Minimum Resistance 1Ω | ||
Minimum Operating Temperature -40°C | ||
Maximum Resistance 3Ω | ||
Maximum Operating Temperature 85°C | ||
Power Dissipation 0.45W | ||
Standards/Approvals RoHS, UL | ||
Series MFR | ||
Lead Orientation Radial | ||
Lead Diameter 0.51mm | ||
- COO (Country of Origin):
- CN
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