GE0250NT4 - 4P SWITCH DISCONNECTOR W/NH FUSE HOLDER

Why Choose the GE0250NT4?

The Lovato GE0250NT4 is a four-pole switch disconnector with NH fuse holder for dependable isolation in AC systems. With a 250 A Ith and AC23A ratings up to 250 A at 400/500 V (200 A at 690 V), it suits demanding industrial panels. It offers Ui 1000 V, Uimp 12 kV and frontal IP20 protection to support safe, compliant operation.

Engineered for reliability, the device features a conditional short-circuit current of 100 kA, mechanical life of 10,000 cycles and screw-on-plate installation. Operating from -25 to 55 °C and up to 3000 m, it carries IEC/EN 60947-1 and 60947-3 conformity. A maximum terminal tightening torque of 24 Nm and low 12 W power dissipation per pole aid efficient, secure panel integration.

Key Benefits

• Four-pole AC isolation with integrated NH fuse holder for protection.
• 250 A Ith with robust AC21, AC22 and AC23 utilisation ratings.
• High dielectric and impulse withstand: Ui 1000 V, Uimp 12 kV.
• Conditional short-circuit current up to 100 kA with NH fusing.
• IP20 frontal protection for safer handling during panel operation.
• Screw-on-plate installation simplifies secure, repeatable panel mounting.
• Durable mechanism rated 10,000 mechanical cycles for long service life.
• Wide operating range: -25 to 55 °C and up to 3000 m.

Technical Specification

• Product type designation: GE
• Number of poles: 4
• Operating voltage type: AC
• Ith (IEC): 250 A
• Rated insulation voltage Ui (IEC/EN): 1000 V
• Rated impulse withstand voltage Uimp: 12 kV
• Operating current Ie AC21A 400 V: 250 A
• Operating current Ie AC21A 500 V: 250 A
• Operating current Ie AC21A 690 V: 250 A
• Operating current Ie AC22A 400 V: 250 A
• Operating current Ie AC22A 500 V: 200 A
• Operating current Ie AC22A 690 V: 250 A
• Operating current Ie AC23A 400 V: 250 A
• Operating current Ie AC23A 500 V: 250 A
• Operating current Ie AC23A 690 V: 200 A
• Power dissipation per pole (max): 12 W
• Rated operational power AC23A 400 V: 132 kW
• Rated operational power AC23A 690 V: 160 kW
• Conditional short-circuit current (rms): 100 kA
• Making capacity AC23A 400 V: 2500 A
• Breaking capacity AC23A 400 V: 2000 A
• Mechanical life: 10000 cycles
• Terminal tightening torque (max): 24 Nm
• Operating temperature: -25 to 55 °C
• Storage temperature: -40 to 70 °C
• Max altitude: 3000 m
• IP degree (frontal): IP20
• Pollution degree: 3

What’s Included

• Lovato GE0250NT4 four-pole switch disconnector with NH fuse holder
• Manufacturer datasheet (available online)

Applications

• Industrial distribution switchboards requiring reliable AC isolation and protection
• Motor control centre incomers and feeders using NH fuse protection
• Switching and isolation of AC circuits up to 690 V
• General machinery panels conforming to IEC/EN 60947-3 duty

Safety note: Install and commission only by qualified personnel. Isolate all power sources before work, use correctly rated NH fuses, apply specified torque, and observe IEC/EN 60947 and local regulations.