Lovato GLC0400T4C1 IEC/EN four-pole changeover switch 400A

Why Choose the GLC0400T4C1?

Engineered by Lovato, the GLC0400T4C1 four-pole changeover switch delivers reliable AC transfer at 400 A Ith. With a 1000 V rated insulation voltage and 12 kV impulse withstand, it ensures robust dielectric performance. The GLC device mounts screw on plate for straightforward panel integration and conforms to IEC/EN 60947 standards. The SKU GLC0400T4C1 suits demanding distribution tasks requiring assured isolation and changeover capability.

High utilisation ratings support heavy loads: AC-23A power is 200 kW at 400 V and 400 kW at 690 V, with 4000 A making and 3200 A breaking capacity at 400 V. The switch offers 80 kA conditional short-circuit current with gG/400 protection, a mechanical life of 10,000 cycles, and operates from -25 to +55 °C up to 3000 m altitude, covering typical UK industrial conditions.

Key Benefits

• Four-pole AC changeover with 400 A Ith for robust transfer.
• High insulation: Ui 1000 V and 12 kV impulse withstand.
• Strong AC-23A power: 200 kW at 400 V; 400 kW at 690 V.
• High fault capability: 80 kA conditional short-circuit with gG/400 protection.
• Reliable performance with 10,000 mechanical cycles and secure plate mounting.
• Powerful switching: 4000 A making and 3200 A breaking at 400 V.
• Wide operating range from -25 to +55 °C, up to 3000 m altitude.
• Compliant with IEC/EN 60947-3, 60947-6-1 and 60947-1 standards.

Technical Specification

• Product type designation: GLC
• Number of poles: 4
• Operating voltage type: AC
• Ith (IEC): 400 A
• Rated insulation voltage Ui (IEC/EN): 1000 V
• Rated impulse withstand voltage Uimp: 12 kV
• Power dissipation per pole (max): 26.0 W
• Rated operational power AC23A 400 V: 200 kW
• Rated operational power AC23A 690 V: 400 kW
• Conditional short-circuit current (rms): 80 kA
• Short-circuit protection fuse: gG/400
• Making capacity AC23A 400 V: 4000 A
• Breaking capacity AC23A 400 V: 3200 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 GLC0400T4C1 four-pole changeover switch
• Product documentation (datasheet and safety information)

Applications

• Mains-to-generator transfer switching in industrial panels
• Load changeover in commercial and infrastructure power systems
• Maintenance bypass and isolation for critical equipment
• Process plant and motor control distribution changeover
• Backup power switching in facilities management

Safety note: Install and commission only by qualified personnel. Isolate all power before work, apply the specified 30–37 Nm terminal torque, use gG/400 protection, and observe IEC/EN limits and environmental ratings.