Lovato GLC0320T4C1 IEC/EN four-pole changeover switch 320A

Why Choose the GLC0320T4C1?

Engineered for demanding transfer duties, the Lovato GLC0320T4C1 is a four-pole changeover switch rated Ith 320 A for AC systems. With Ui 1000 V and Uimp 12 kV, it handles robust industrial environments, while screw-on plate mounting simplifies panel integration. AC-23A performance includes 160 kW at 400 V and 315 kW at 690 V, supporting reliable switching under load.

Built for longevity with 10,000 mechanical cycles, this GLC changeover switch supports conditional short-circuit current up to 80 kA when protected by a gG/355 fuse. Terminals tighten to 30-37 Nm for secure connections. Operates from -25 to +55 °C and up to 3000 m altitude. Conforms to IEC/EN 60947-3, IEC/EN 60947-6-1 and IEC/EN 60947-1, ensuring dependable performance.

Key Benefits

• 320 A Ith rating supports high-demand AC industrial circuits.
• Four-pole configuration enables comprehensive source changeover capability.
• Ui 1000 V and Uimp 12 kV for robust insulation performance.
• AC-23A power: 160 kW at 400 V, 315 kW at 690 V.
• Conditional short-circuit current 80 kA with gG/355 fuse protection.
• 10,000 mechanical cycles for dependable service life.
• Screw-on plate mounting and 30-37 Nm terminal torque.
• Operates -25 to +55 °C; rated up to 3000 m altitude.

Technical Specification

• Product type designation: GLC
• Number of poles: 4
• Operating voltage type: AC
• Ith (IEC): 320 A
• Rated insulation voltage Ui (IEC/EN): 1000 V
• Rated impulse withstand voltage Uimp: 12 kV
• Power dissipation per pole (max): 20.8 W
• Rated operational power AC23A 400 V: 160 kW
• Rated operational power AC23A 690 V: 315 kW
• Conditional short-circuit current (rms): 80 kA
• Short-circuit protection fuse: gG/355
• Making capacity AC23A 400 V: 3200 A
• Breaking capacity AC23A 400 V: 2560 A
• Mechanical life: 10000 cycles
• Terminal tightening torque: 30 to 37 Nm
• Operating temperature: -25 to +55 °C
• Storage temperature: -40 to +70 °C
• Max altitude: 3000 m

What’s Included

• Lovato GLC0320T4C1 changeover switch (GLC series)
• Installation and safety instructions
• Manufacturer datasheet (downloadable)

Applications

• Mains-to-generator transfer switching in industrial and commercial installations.
• Changeover duties in distribution panels and switchboards.
• AC-23A category switching for mixed resistive and inductive loads.
• Backup power changeover for process equipment and building services.
• Panel builder projects requiring four-pole source selection.

Safety note: Install and commission only by qualified personnel. De-energise circuits before work, tighten terminals to 30-37 Nm, protect with gG/355 fuses as specified, and operate within stated temperature and altitude limits.