Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
MERSEN FUSE 400V CP 8X31 AM 12A S/I FR8AM40V12
Mersen FR8AM40V12 8 × 32 mm aM cylindrical fuse-link rated at 12 A and 400 V AC for industrial motor circuit protection.
£1.04
Why Choose the Mersen FR8AM40V12 Cylindrical Fuse-Link?
The Mersen FR8AM40V12 is a high-quality 8 × 32 mm aM cylindrical fuse-link designed to provide dependable short-circuit protection for motor circuits and industrial control equipment. Manufactured to IEC standards, this compact fuse-link is ideal for motor starters, switchgear and automation systems where reliable motor protection is essential.
As part of the trusted Mersen FR8 aM fuse series, the FR8AM40V12 features a ceramic body with silver-plated contacts for excellent electrical performance and long service life. Its aM operating characteristic allows normal motor starting currents to pass while providing rapid interruption of damaging short-circuit faults, helping protect motors and associated equipment.
With a 12 A current rating, 400 V AC rated voltage and a 20 kA breaking capacity, the FR8AM40V12 is an excellent solution for protecting industrial motor circuits, machinery and OEM equipment operating in demanding environments.
Key Advantages
- Compact 8 × 32 mm IEC cylindrical fuse-link.
- aM motor protection characteristic for short-circuit protection.
- 12 A rated current suitable for industrial motor circuits.
- 400 V AC rated voltage for low-voltage industrial installations.
- 20 kA breaking capacity for dependable fault interruption.
- Ceramic construction with silver-plated contacts for long-term reliability.
Key Features
- Mersen FR8 aM fuse series.
- 8 × 32 mm cylindrical fuse-link.
- 12 A rated current.
- 400 V AC IEC rated voltage.
- aM partial-range motor protection characteristic.
- 20 kA breaking capacity.
- Ceramic insulating body.
- Silver-plated contact caps.
- Manufactured to IEC 60269 standards.
Reliable Protection for Industrial Motor Circuits
The Mersen FR8AM40V12 is specifically designed to protect motor circuits against damaging short-circuit currents while allowing normal motor starting currents to pass without unnecessary fuse operation. This helps maximise equipment availability and minimise downtime.
Its compact 8 × 32 mm format makes it suitable for modern control panels, motor starters and OEM machinery where space-saving protection and dependable performance are required.
Typical Applications
- Industrial motor starters.
- Motor control centres.
- Electrical control panels.
- Machine building and OEM equipment.
- Industrial automation systems.
- Switchgear and distribution assemblies.
Technical Specifications
Tick the specs you need, then view products that match.
| Current | 12 A | |
|---|---|---|
| Voltage | 400 V | |
| Device Type | Fuse link | |
| Fuse Type | Cylindrical | |
| Fuse Size | 8x32 mm | |
| Fuse Class | aM | |
| Manufacturer | Mersen | |
| Series | FR8 aM Cylindrical Fuse-Links | |
| Model | FR8AM40V12 | |
| Item number | V1007188 | |
| Product type | Cylindrical fuse-link | |
| Fuse characteristic | aM (motor protection) | |
| Rated current | 12 A | |
| Rated voltage | 400 V AC | |
| Breaking capacity | 20 kA | |
| Fuse size | 8 × 32 mm | |
| Frequency | 50 / 60 Hz | |
| Body material | Ceramic | |
| Contact material | Silver-plated metal | |
| Power dissipation | 0.7 W | |
| Weight | Approx. 4.4 g | |
| RoHS compliant | Yes | |
| HS Code | 85361050 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen FR8AM40V12 used for?
The FR8AM40V12 is an aM cylindrical fuse-link designed to provide short-circuit protection for industrial motor circuits and associated electrical equipment.
What current rating does this fuse have?
This model has a 12 A rated current.
What voltage is the FR8AM40V12 designed for?
The fuse is rated for operation on systems up to 400 V AC.
What does the aM characteristic mean?
aM fuse-links provide partial-range protection for motor circuits by interrupting high fault currents while allowing normal motor starting currents to pass.
Where is this fuse typically installed?
It is commonly installed in motor starters, industrial control panels, OEM machinery and electrical switchgear.
Trusted by Industrial Engineers Worldwide
Mersen cylindrical fuse-links are trusted by panel builders, machine manufacturers and maintenance engineers for dependable motor protection, high fault interruption performance and long-term reliability.
