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 MODULOSTAR CMC8 1P C/I CMC81I
Mersen CMC81I Modulostar single-pole cylindrical fuse holder for 8.5 x 31.5 mm and 8 x 32 mm fuse-links, rated at 25 A and 400 V AC with visual blown fuse indication and IP20 protection.
£5.06
Why Choose the Mersen CMC81I Modulostar Fuse Holder?
The Mersen CMC81I, item number X1062689, is a compact single-pole cylindrical fuse holder designed for reliable overcurrent protection in industrial electrical distribution, control and machinery applications. Part of the established Mersen Modulostar® CMC8 series, it accepts standard 8.5 × 31.5 mm and 8 × 32 mm cylindrical fuse-links.
This model includes an integrated visual blown fuse indicator, allowing maintenance personnel to identify an operated fuse quickly without removing it from the holder. Its finger-safe construction provides an IP20 degree of protection, including during fuse replacement, helping improve operator safety inside electrical control panels.
Rated for operation at up to 400 V AC and 25 A, the CMC81I is suitable for protecting motors, transformers, low-voltage distribution circuits, control equipment and metering systems. Its slim 17.5 mm modular width and DIN rail mounting arrangement help conserve valuable panel space while simplifying installation.
Key Advantages
- Compact single-pole modular fuse holder for industrial installations.
- Compatible with 8.5 × 31.5 mm and 8 × 32 mm cylindrical fuse-links.
- Integrated visual blown fuse indicator supports rapid fault identification.
- 25 A current rating for control and distribution applications.
- 400 V AC rated operating voltage.
- Finger-safe IP20 protection, including during fuse replacement.
- Space-saving 17.5 mm modular width.
- DIN rail installation simplifies control-panel assembly.
Key Features
- Mersen Modulostar® CMC8 series.
- Single-pole fuse holder.
- 8.5 × 31.5 mm cylindrical fuse size.
- 25 A conventional thermal current.
- 400 V AC IEC rated voltage.
- Visual blown fuse indication.
- Finger-safe IP20 construction.
- PA6 thermoplastic housing.
- Lockable without additional accessories.
- Sealable in both open and closed positions.
- DIN rail mounting in accordance with EN 60715.
- Suitable for gG and aM cylindrical fuse-links.
Compact Protection for Electrical Control Circuits
Cylindrical fuse holders provide a secure connection and accessible mounting point for replaceable fuse-links. When an overload or short circuit occurs, the installed fuse-link interrupts the current to help protect conductors, transformers, motors and connected control equipment.
The Mersen CMC81I combines compact dimensions with finger-safe protection and clear visual fuse-status indication. Its modular design allows multiple units to be installed side by side, while optional assembly accessories can be used to create coordinated multi-pole arrangements where required.
Typical Applications
- Industrial electrical control panels.
- Motor and transformer protection circuits.
- Low-voltage electrical distribution.
- Machine control and automation systems.
- Metering and instrumentation circuits.
- Heating and ventilation equipment.
- OEM machinery and production equipment.
- Railway and marine electrical installations.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Indication | Visual indicator | |
|---|---|---|
| Phase | Single Phase | |
| Poles | 1-pole | |
| Device Type | Fuse base / holder | |
| Fuse Type | Cylindrical | |
| Fuse Size | 8.5x31.5 mm | |
| Fuse Class | gG | |
| Current | 25 A | |
| Voltage | 400 V | |
| Manufacturer | Mersen | |
| Series | Modulostar® CMC8 | |
| Catalogue number | CMC81I | |
| Item number | X1062689 | |
| Product type | Cylindrical modular fuse holder | |
| Number of poles | 1 | |
| Fuse size | 8.5 × 31.5 mm / 8 × 32 mm | |
| Compatible fuse classes | gG and aM | |
| Rated current | 25 A | |
| Rated voltage AC | 400 V AC | |
| AC or DC | AC | |
| Rated insulation voltage | 690 V | |
| Rated impulse withstand voltage | 6 kV | |
| Maximum fuse-link power dissipation | 2.5 W | |
| Fuse-holder power dissipation | 0.4 W | |
| Utilisation category | AC-20B / DC-20B | |
| Indication system | Yes | |
| Indication type | Visual blown fuse indicator | |
| Indicator voltage range | 220–700 V AC/DC | |
| Protection rating | IP20 | |
| Housing material | PA6 thermoplastic | |
| Tightening torque | 2 Nm | |
| Mounting type | DIN rail mounting to EN 60715 | |
| Operating temperature | -40°C to +70°C with carrier operation | |
| Storage temperature | -40°C to +70°C | |
| Dimensions (H × W × D) | approx. 79.3 × 17.5 × 61.1 mm | |
| Product weight | approx. 0.049 kg | |
| EAN / UPC | 3605340602579 | |
| Standards | IEC 60269-2 and IEC 60947-3 | |
| RoHS compliant | Yes | |
| REACH compliant | Yes | |
| HS Code | 85361050 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen CMC81I used for?
The Mersen CMC81I is used to install a cylindrical fuse-link for protecting motors, transformers, control circuits, metering equipment and low-voltage distribution systems against overcurrent faults.
What fuse size fits the CMC81I?
The fuse holder accepts standard 8.5 × 31.5 mm and 8 × 32 mm cylindrical fuse-links, including compatible gG and aM fuse types.
Does the CMC81I have a fuse indicator?
Yes. The CMC81I includes an integrated visual blown fuse indicator that helps identify an operated fuse quickly during inspection and maintenance.
What is the current rating of the CMC81I?
The fuse holder has a rated conventional thermal current of 25 A, subject to the rating and characteristics of the installed fuse-link.
What voltage is the CMC81I rated for?
The Mersen CMC81I is rated for operation at up to 400 V AC and has a rated insulation voltage of 690 V.
How is the Mersen CMC81I installed?
The unit mounts onto a standard DIN rail in accordance with EN 60715 and occupies approximately 17.5 mm of panel width.
Trusted Industrial Fuse Protection
Mersen Modulostar® fuse holders are widely used by panel builders, electrical engineers and machinery manufacturers to provide compact, finger-safe and dependable protection for industrial electrical circuits.
