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.
