GEF0250N Lovato 3P SWITCH WITH FUSE HOLDER NH 250A

Why Choose the Lovato GEF0250N 3-Pole 250 A Switch Disconnector with NH Fuse Holder?

The Lovato GEF0250N is a three-pole 250 A switch disconnector with an integrated NH fuse holder, designed to combine reliable circuit isolation with fuse protection in industrial and commercial power distribution systems. As part of the Lovato GEF fused switch disconnector series, it provides a compact solution for switchboards and control panels where high-current switching, isolation and fuse accommodation are required within a single coordinated device.

The GEF0250N has an IEC conventional free-air thermal current rating of 250 A, a rated insulation voltage of 1000 V and a rated impulse withstand voltage of 12 kV. Its integrated NH fuse-holder arrangement accommodates compatible NH fuse links, while the three-pole switching mechanism provides simultaneous isolation of three-phase circuits.

Designed for demanding AC applications, the GEF0250N is rated at 250 A at 400–500 V AC for AC-21A and AC-22A utilisation categories. Under AC-23A conditions it is rated at 250 A at 400 V AC and 200 A at 500 V AC, with a high conditional short-circuit current rating of 100 kA rms.

Key Advantages

• Combines a three-pole switch disconnector and NH fuse holder in one coordinated device.
• 250 A conventional free-air thermal current rating for demanding industrial power distribution applications.
• Supports AC-21A, AC-22A and AC-23A utilisation categories.
• High 100 kA rms conditional short-circuit current capability.
• 1000 V rated insulation voltage and 12 kV impulse withstand voltage.
• Compact GEF design is well suited to switchboards and panels where installation space is limited.

Key Features

• Lovato GEF switch disconnector with fuse-holder series.
• Three-pole switching configuration.
• Integrated NH fuse holder.
• 250 A IEC conventional free-air thermal current at temperatures up to 40 °C.
• 1000 V rated insulation voltage Ui.
• 12 kV rated impulse withstand voltage Uimp.
• AC-21A operational current of 250 A at 400–500 V AC.
• AC-22A operational current of 250 A at 400–500 V AC.
• AC-23A operational current of 250 A at 400 V AC and 200 A at 500 V AC.
• 100 kA rms conditional short-circuit current.
• 8,000-cycle mechanical life for dependable industrial operation.
• Transparent front windows in the GEF design allow convenient monitoring of fuse status.

High-Current Fuse Protection and Circuit Isolation

Fused switch disconnectors combine manual circuit isolation with accommodation for fuse links, allowing switching and fuse protection to be incorporated into a coordinated assembly. The Lovato GEF range is designed for compact panel installations and includes transparent front windows that allow the condition of installed fuse links to be monitored without compromising the practical layout of the switchgear.

The Lovato GEF0250N combines three-pole isolation with an integrated NH fuse holder and a high 100 kA rms conditional short-circuit current rating. Its substantial 250 A AC-23A rating at 400 V AC, lug or bar connections and flexible mounting orientation make it particularly suitable for high-current industrial feeders, switchboards and machinery power distribution systems.

Typical Applications

• Industrial power distribution and high-current feeder isolation.
• Switchboards and electrical distribution panels.
• Three-phase circuits requiring NH fuse protection.
• Industrial machinery and automation systems.
• Motor and equipment feeder circuits.
• Commercial and industrial installations requiring fused isolation up to 250 A.