Lovato GLC0250T4C1 IEC/EN four-pole changeover switch 250A

Why Choose the GLC0250T4C1?

Engineered by Lovato, the GLC0250T4C1 is a four-pole changeover switch for dependable AC load transfer. With SKU GLC0250T4C1, this GLC series device delivers a 250 A IEC conventional free air thermal current (Ith) and robust AC-23A performance, rated 140 kW at 400 V and 250 kW at 690 V. Screw-on plate installation and compliance with IEC/EN 60947 standards make it a strong fit for panel builders and switchboard manufacturers.

Designed for demanding environments, it offers a 1000 V rated insulation voltage (Ui) and 12 kV impulse withstand (Uimp), with a conditional short-circuit current of 100 kA when protected by a gG/250 fuse. Durable mechanics provide 20,000 cycles, while terminals accept 70 to 185 mm² conductors tightened to 15 to 22 Nm. Operating temperature is -25 to +55 °C, storage -40 to +70 °C, for installations up to 3000 m altitude.

Key Benefits

• Four-pole AC changeover for reliable load transfer and isolation.
• 250 A Ith with AC-23A ratings up to 250 kW at 690 V.
• High dielectric strength: Ui 1000 V and Uimp 12 kV.
• Withstands 100 kA conditional short-circuit with gG/250 fuse.
• Durable build with 20,000 mechanical operation cycles.
• Wide conductor range 70 to 185 mm²; torque 15 to 22 Nm.
• Screw-on plate mounting simplifies panel installation.
• Operates from -25 to +55 °C; up to 3000 m altitude.

Technical Specification

• Product type designation: GLC
• 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
• Power dissipation per pole (max): 6.5 W
• Rated operational power AC23A 400 V: 140 kW
• Rated operational power AC23A 690 V: 250 kW
• Conditional short-circuit current (rms): 100 kA
• Short-circuit protection fuse: gG/250
• Making capacity AC23A 400 V: 2500 A
• Breaking capacity AC23A 400 V: 2000 A
• Mechanical life: 20000 cycles
• Terminal tightening torque: 15 to 22 Nm
• Conductor section (IEC): 70 to 185 mm²
• Operating temperature: -25 to +55 °C
• Storage temperature: -40 to +70 °C
• Max altitude: 3000 m

What’s Included

• Lovato GLC0250T4C1 four-pole changeover switch
• Manufacturer datasheet (PDF download)
• Protective packaging for transit

Applications

• AC load transfer and isolation in industrial panels
• Switchboards requiring four-pole source selection
• AC-23A duty switching of mixed and motor loads
• Screw-on plate panel installations
• Distribution boards requiring high conditional short-circuit withstand

Safety note: Installation and operation must be performed by qualified personnel. Fit appropriate gG/250 short-circuit protection, isolate all power sources before work, and observe the specified torque and operating limits.