Bulk discount available
Subtotal (1 pack of 10 units)*
£3.14
(exc. VAT)
£3.77
(inc. VAT)
FREE delivery for orders over £50.00
In Stock
- Plus 110 unit(s) shipping from 16 February 2026
- Plus 220 unit(s) shipping from 16 February 2026
- Plus 670 unit(s) shipping from 23 February 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit | Per Pack* |
|---|---|---|
| 10 - 90 | £0.314 | £3.14 |
| 100 - 490 | £0.307 | £3.07 |
| 500 - 1490 | £0.298 | £2.98 |
| 1500 - 2490 | £0.289 | £2.89 |
| 2500 + | £0.282 | £2.82 |
*price indicative
- RS Stock No.:
- 647-8718
- Mfr. Part No.:
- MF-RX185/72-0
- 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 | 3.7A | |
| Voltage | 72 V | |
| Current Rating | 40 A | |
| Time to Trip | 12.6s | |
| Hold Current | 1.85A | |
| Length | 15.18mm | |
| Height | 21.18mm | |
| Width | 3.1 mm | |
| Minimum Resistance | 0.08Ω | |
| Maximum Resistance | 190mΩ | |
| Minimum Operating Temperature | -40°C | |
| Power Dissipation | 2.1W | |
| Maximum Operating Temperature | 85°C | |
| Standards/Approvals | RoHS, UL | |
| Series | MF-RX/72 | |
| Lead Diameter | 0.81mm | |
| Lead Orientation | Radial | |
| Select all | ||
|---|---|---|
Brand Bourns | ||
Product Type Resettable Fuse | ||
Trip Current 3.7A | ||
Voltage 72 V | ||
Current Rating 40 A | ||
Time to Trip 12.6s | ||
Hold Current 1.85A | ||
Length 15.18mm | ||
Height 21.18mm | ||
Width 3.1 mm | ||
Minimum Resistance 0.08Ω | ||
Maximum Resistance 190mΩ | ||
Minimum Operating Temperature -40°C | ||
Power Dissipation 2.1W | ||
Maximum Operating Temperature 85°C | ||
Standards/Approvals RoHS, UL | ||
Series MF-RX/72 | ||
Lead Diameter 0.81mm | ||
Lead Orientation Radial | ||
MF-RX Series
Radial leaded devices
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