Lovato GLC0400C1UL UL1008 three-pole changeover switches 400A

Why Choose the GLC0400C1UL?

The Lovato GLC0400C1UL changeover switch is a robust three‑pole UL1008 solution for dependable AC source transfer in demanding installations. Rated at 400 A Ith, it supports industrial switching with high insulation strength (Ui 1000 V) and 12 kV impulse withstand. Screw‑on‑plate mounting simplifies panel integration, while compliance with IEC/EN 60947 standards underpins safety and performance across backup power and distribution changeover duties.

Engineered for reliability, this switch delivers AC23A performance of 200 kW at 400 V and 400 kW at 690 V, with 4,000 A making and 3,200 A breaking capacity at 400 V. It withstands conditional short circuits up to 80 kA with J/400 fuse protection, and offers 10,000 mechanical cycles. Wide operating temperatures from −25 to +55 °C, terminal torque 30–37 Nm and suitability to 3000 m altitude ensure dependable service.

Key Benefits

• UL1008 certified three-pole changeover switch for critical AC applications.
• 400 A Ith and 1000 V Ui provide robust thermal and insulation ratings.
• High 12 kV impulse withstand enhances resilience against transient overvoltage.
• AC23A power up to 400 kW at 690 V for heavy loads.
• Strong making/breaking at 400 V: 4000 A / 3200 A.
• 80 kA conditional short-circuit rating with J/400 fuse protection.
• Wide −25 to +55 °C operating range and 10,000 mechanical cycles.

Technical Specification

• 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: J/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 GLC0400C1UL three-pole changeover switch
• Product datasheet and installation guidance
• Factory packaging for transit protection

Applications

• Mains-to-generator source transfer for backup power systems
• Changeover in industrial distribution boards and switchboards
• Critical load supply transfer in commercial facilities
• Power switching for industrial equipment and process loads
• Utility or alternative source selection in plant infrastructure

Safety note: Installation and maintenance must be performed by qualified personnel. Always isolate power, use the specified J/400 fuse, and tighten terminals to 30–37 Nm in accordance with the relevant standards.