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MERSEN FUSE US221MI US221MI
Mersen Z1006203 UltraSafe US221MI single-pole modular fuse holder for 22 x 58 mm cylindrical fuse links, featuring a 125 A rating, visual indicator, microswitch and IP20 protection.
£33.91
Why Choose the Mersen Z1006203 UltraSafe US221MI Fuse Holder?
The Mersen Z1006203, catalogue reference US221MI, is a robust single-pole modular fuse holder designed for 22 × 58 mm cylindrical fuse links. Part of the Mersen UltraSafe™ US22 range, it provides secure fuse installation, dependable circuit protection and safer maintenance within industrial control panels, switchboards and power distribution systems.
This model includes both a visual fuse-status indicator and a microswitch, allowing local inspection and remote indication of fuse operation. The finger-safe construction provides an IP20 degree of protection, including during fuse replacement, helping reduce accidental contact with live electrical components.
With a maximum current rating of 125 A, UL voltage ratings of up to 800 V AC and 1000 V DC, and a short-circuit current rating of 100 kA, the Z1006203 is suitable for demanding AC and DC applications. Its compact DIN rail-mounted design enables straightforward integration into industrial machinery, renewable energy equipment and electrical distribution assemblies.
Key Advantages
- Designed for 22 × 58 mm cylindrical fuse links.
- 125 A maximum fuse rating for demanding industrial circuits.
- Combined visual indicator and microswitch for local and remote fuse-status monitoring.
- Finger-safe IP20 construction supports safer operation and maintenance.
- Suitable for both AC and DC electrical systems.
- DIN rail mounting simplifies installation inside control panels and switchboards.
Key Features
- Mersen UltraSafe™ US22 modular fuse-holder series.
- US221MI catalogue reference.
- Single-pole configuration.
- 125 A ampere rating.
- Visual fuse-status indicator.
- Integrated microswitch for remote indication.
- Pressure-plate connection system.
- Tin-plated copper connection terminals.
- Durable polyamide insulating housing.
- Suitable for standard EN 60715 DIN rail mounting.
Reliable Fuse Protection with Remote Status Monitoring
Cylindrical fuse holders provide a secure electrical and mechanical connection between fuse links and the protected circuit. When excessive current or a short circuit occurs, the installed fuse link interrupts the electrical supply to help protect cables, machinery and connected equipment from damage.
The Mersen Z1006203 combines a visual indicator with an integrated microswitch, allowing maintenance teams to inspect fuse status locally or transmit a signal to a PLC, alarm or monitoring system. This can reduce fault-finding time and improve maintenance efficiency across complex industrial installations.
Typical Applications
- Industrial power distribution systems.
- Machinery and automation control panels.
- Motor, transformer and equipment protection circuits.
- Renewable energy and battery storage systems.
- AC and DC electrical distribution assemblies.
- Industrial switchboards and control cabinets.
Technical Specifications
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| Fuse Indication | Microswitch, Visual indicator | |
|---|---|---|
| Phase | Single Phase | |
| Poles | 1-pole | |
| Device Type | Fuse base / holder | |
| Fuse Type | Cylindrical | |
| Fuse Size | 22x58 mm | |
| Voltage | 800 V | |
| Manufacturer | Mersen | |
| Series | UltraSafe™ US22 | |
| Item number | Z1006203 | |
| Catalogue number | US221MI | |
| Product type | Modular cylindrical fuse holder | |
| Fuse size | 22 × 58 mm | |
| Number of poles | 1-pole | |
| Ampere rating | 125 A | |
| Maximum fuse rating | 125 A | |
| Rated voltage AC, UL | 800 V AC | |
| Rated voltage DC, UL | 1000 V DC | |
| Rated voltage AC, IEC | 690 V AC | |
| Rated voltage DC, IEC | 690 V DC | |
| Frequency | 50 / 60 Hz | |
| AC or DC | AC / DC | |
| Short-circuit current rating | 100 kA | |
| Rated insulation voltage | 750 V | |
| Rated impulse withstand voltage | 8 kV | |
| Protection rating | IP20 | |
| Indication system | Visual indicator and microswitch | |
| Wiring range | 1/0 AWG to 14 AWG | |
| Terminal material | Tin-plated copper | |
| Terminal type | Clip / pressure plate | |
| Fuse installation method | Clip-in | |
| Terminal torque | 4 N m | |
| Housing material | Polyamide | |
| Mounting type | DIN rail mounting to EN 60715 | |
| Dimensions (H × W × D) | 127.5 × 35 × 76.5 mm | |
| Product weight | approx. 0.217 kg | |
| EAN / UPC | 0782001311254 | |
| RoHS compliant | Yes | |
| HS Code | 85361090 | |
| Country of Manufacture | Tunisia |
Frequently Asked Questions
What is the Mersen Z1006203 used for?
The Mersen Z1006203 is used to hold a 22 × 58 mm cylindrical fuse link within industrial AC or DC electrical protection circuits.
What is the maximum current rating of the Z1006203?
The fuse holder has a maximum fuse and ampere rating of 125 A.
Does this fuse holder provide fuse-status indication?
Yes. The US221MI includes a visual indicator and an integrated microswitch for local and remote fuse-status indication.
What voltage can the Mersen Z1006203 handle?
It is rated up to 800 V AC and 1000 V DC under UL requirements, with IEC ratings of 690 V AC and 690 V DC.
How is the Z1006203 installed?
The fuse holder is designed for mounting onto a standard EN 60715 DIN rail inside an electrical enclosure, control cabinet or switchboard.
Trusted Industrial Circuit Protection from Mersen
Mersen UltraSafe™ modular fuse holders are trusted by electrical engineers, panel builders and equipment manufacturers for dependable fuse protection, safer maintenance and effective circuit-status monitoring in demanding industrial systems.
