Why Choose the Mersen G331160 US221M UltraSafe Fuse Holder?
The Mersen G331160, catalogue reference US221M, is a durable single-pole modular fuse holder with microswitch indication, designed for use with 22 × 58 mm cylindrical fuse-links. Part of the Mersen UltraSafe US22 series, it combines dependable overcurrent protection with remote status signalling for industrial power distribution, machinery and automation systems.
The integrated microswitch allows the fuse-holder status to be communicated to an external PLC, alarm circuit or monitoring system. This supports faster fault identification and can help reduce downtime in continuously operated machinery, power conversion equipment and automated production systems.
With a rated current of 125 A, UL voltage ratings of 800 V AC and 1000 V DC, and IEC ratings of 690 V AC or 690 V DC, the G331160 is suitable for demanding industrial applications. Its IP20 finger-safe construction, pressure-plate connection and DIN rail mounting format support safe, efficient panel installation.
Key Advantages
- Single-pole fuse holder for 22 × 58 mm cylindrical fuse-links.
- Integrated microswitch for remote status indication.
- 125 A current rating for demanding industrial circuits.
- UL rated up to 800 V AC and 1000 V DC.
- IEC rated up to 690 V AC or 690 V DC.
- 100 kA short-circuit current rating for high fault-current applications.
- IP20 finger-safe construction supports safer operation and fuse replacement.
- DIN rail mounting enables straightforward installation inside electrical panels.
Key Features
- Mersen UltraSafe US22 series.
- US221M single-pole configuration.
- Compatible with 22 × 58 mm cylindrical fuse-links.
- Integrated microswitch indication system.
- 125 A maximum fuse rating.
- 800 V AC and 1000 V DC UL ratings.
- 690 V AC/DC IEC rated voltage.
- 100 kA short-circuit current rating.
- 8 kV rated impulse withstand voltage.
- Tin-plated copper connection components.
- Pressure-plate terminal arrangement.
- Durable polyamide insulating housing.
Reliable Fuse Protection with Remote Status Monitoring
The Mersen G331160 securely accommodates a 22 × 58 mm cylindrical fuse-link used to protect electrical circuits against overloads and short circuits. When fitted with a correctly selected fuse-link, it helps prevent damaging fault currents from affecting cables, semiconductor devices, machinery and connected electrical equipment.
Its integrated microswitch enables remote indication through a PLC, alarm or supervisory system, helping maintenance teams locate affected circuits more quickly. This combination of high-voltage capability, finger-safe construction and remote monitoring makes the US221M particularly suitable for modern industrial and energy-conversion systems.
Typical Applications
- Industrial control panels and switchboards.
- Variable speed drives and motor control equipment.
- Power conversion and inverter systems.
- Renewable energy and battery storage equipment.
- Automation systems with remote fault monitoring.
- Transformer and machinery protection circuits.
- Industrial AC and DC distribution systems.
- OEM electrical panel assemblies.
