Lovato GLC0400C1 IEC/EN three-pole changeover switch 400A

Why Choose the GLC0400C1?

The Lovato GLC0400C1 is a three-pole changeover switch designed for dependable AC source transfer in high-current systems. With an IEC conventional free air thermal current Ith of 400 A, rated insulation voltage Ui of 1000 V and impulse withstand Uimp of 12 kV, it suits demanding requirements. The GLC series device installs via screw-on plate and complies with IEC/EN 60947 standards, supporting reliable switching performance and straightforward integration in compliant assemblies.

High making and breaking capacities at 400 V (4000 A/3200 A) enable secure transfer under load, while AC-23A ratings deliver up to 200 kW at 400 V and 400 kW at 690 V. A conditional short-circuit current of 80 kA with gG/400 fuse, 10,000-cycle mechanical life, -25 to +55 °C operation and up to 3000 m altitude underline durability. Terminals accept 30 to 37 Nm torque for firm, safe connections.

Key Benefits

• 400 A Ith ensures dependable performance on high-current three-phase AC systems.
• AC-23A power: 200 kW at 400 V, 400 kW at 690 V.
• Rated Ui 1000 V and Uimp 12 kV for insulation and surge robustness.
• Strong making/breaking at 400 V: 4000 A and 3200 A under load.
• Conditional short-circuit rating 80 kA when protected by gG/400 fuse.
• Operates -25 to +55 °C and up to 3000 m altitude.
• Durable 10,000-cycle mechanical life supports long-term reliability.
• Screw-on plate mounting and 30 to 37 Nm terminal torque security.

Technical Specification

• Product type designation: GLC
• Number of poles: 3
• 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 GLC0400C1 three-pole changeover switch
• Manufacturer technical datasheet
• Basic installation and safety information
• Protective packaging

Applications

• Mains to generator changeover in three-phase AC installations
• Source selection and load transfer in power distribution panels
• Switching of AC-23A category motor and mixed resistive/inductive loads
• Maintenance bypass and system isolation during service operations

Safety note: Installation and commissioning must be performed by qualified personnel. Isolate all power sources before work, observe IEC/EN 60947 requirements, use the specified gG/400 fuse, and tighten terminals to 30 to 37 Nm.