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GLCMB0250T4E110 Lovato 4 Pole 250A 690V Motorised Changeover Switch
Lovato GLCMB0250T4E110 250A four-pole motorised changeover switch with a 110–125V AC/DC motor operator for automatic mains, generator and alternative power-source transfer systems.
£1,265.93
Why Choose the Lovato GLCMB0250T4E110 Motorised Changeover Switch?
The Lovato GLCMB0250T4E110 is a heavy-duty 250 A four-pole motorised changeover switch designed for the controlled transfer of electrical loads between two independent power sources. Part of the proven Lovato GLCM motorised changeover switch range, it provides a dependable solution for automatic transfer switch panels, standby generator systems and industrial power distribution installations.
An integrated 110–125 V AC/DC motor operator allows the GLCMB0250T4E110 to be operated remotely through a compatible automatic transfer controller, PLC or building management system. Motorised switching reduces the need for manual intervention, improves operating safety and helps restore power efficiently when the preferred electrical supply is unavailable.
With a conventional free-air thermal current rating of 250 A, a four-pole switching configuration and suitability for electrical systems up to 690 V AC, this Lovato changeover switch is ideal for installations requiring all three phases and the neutral conductor to be transferred together.
Key Advantages
- Motorised changeover operation for automatic or remotely controlled source transfer.
- 250 A IEC thermal current rating for demanding power-distribution applications.
- 110–125 V AC/DC motor operator for flexible control-system integration.
- Four-pole configuration switches three phases and the neutral conductor.
- Suitable for use with ATS controllers, PLCs and building management systems.
- Supports reliable transfer between mains, generator and alternative power sources.
- High insulation and impulse-withstand ratings for demanding electrical environments.
- Designed for professional switchboard, panel-building and OEM applications.
Key Features
- Lovato GLCM motorised changeover switch series.
- 250 A conventional free-air thermal current.
- Four-pole power-switching mechanism.
- 110–125 V AC/DC rated motor voltage.
- Motor operating voltage range of 77–165 V AC/DC.
- 1000 V rated insulation voltage.
- 12 kV rated impulse withstand voltage.
- Mechanical endurance of up to 20,000 operating cycles.
- Suitable for automatic mains-to-generator transfer systems.
- Conforms to IEC/EN/BS 60947-3 and IEC/EN/BS 60947-6-1.
Dependable Automatic Power-Source Transfer
A motorised changeover switch provides a controlled method of transferring an electrical load between two power sources, typically a utility supply and a standby generator. When connected to a compatible automatic transfer controller, the system can monitor the incoming supplies and initiate a transfer when the preferred source fails or falls outside its permitted operating limits.
The GLCMB0250T4E110 provides clearly defined source I, OFF and source II switching positions. Its four-pole arrangement transfers all three phase conductors together with the neutral, supporting installations where complete electrical separation between the two supplies is required.
Typical Applications
- Automatic transfer switch (ATS) panels.
- Mains-to-generator changeover systems.
- Industrial electrical distribution boards.
- Commercial building power systems.
- Manufacturing and process-control facilities.
- Data centres and communications infrastructure.
- Healthcare and critical building services.
- Utilities and emergency power installations.
- OEM electrical control panels.
Technical Specifications
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| Power | 140 kW | |
|---|---|---|
| Operation | Motorised | |
| Device Type | Motorised changeover switch | |
| Current | 250 A | |
| Voltage | 690 V | |
| Phase | Three Phase | |
| IP Rating | IP00 | |
| Poles | 4-pole | |
| Manufacturer | Lovato Electric | |
| Series | GLCM Motorised Changeover Switches | |
| Model | GLCMB0250T4E110 | |
| Product type | Motorised changeover switch | |
| Number of poles | 4 | |
| Conventional free-air thermal current (Ith) | 250 A | |
| Rated operational current (AC-23A at 400 V) | 250 A | |
| Rated operational current (AC-23A at 690 V) | 250 A | |
| Maximum operating voltage | 690 V AC | |
| Motor rated operational voltage | 110–125 V AC/DC | |
| Motor operating voltage range | 77–165 V AC/DC | |
| Rated motor current | 0.72–0.88 A | |
| Motor inrush current | 1.8–2.2 A | |
| Rated insulation voltage (Ui) | 1000 V | |
| Rated impulse withstand voltage (Uimp) | 12 kV | |
| Rated operational power (AC-23A at 400 V) | 140 kW | |
| Rated operational power (AC-23A at 690 V) | 250 kW | |
| Conditional short-circuit current | 100 kA | |
| Recommended fuse | gG 250 A | |
| Maximum power dissipation | 6.5 W per pole | |
| Mechanical endurance | 20,000 cycles | |
| Maximum continuous switching rate | 1 cycle per minute | |
| Main conductor capacity | 70–185 mm² | |
| Main terminal tightening torque | 15–22 Nm | |
| Auxiliary conductor capacity | 0.2–2.5 mm² | |
| Maximum control cable length | 100 m | |
| Protection rating | IP00 | |
| Pollution degree | 3 | |
| Operating temperature | -25 to +55 °C | |
| Storage temperature | -40 to +70 °C | |
| Maximum operating altitude | 3000 m | |
| Normal mounting position | Vertical plane | |
| Permitted mounting position | Any | |
| Fixing method | Screw mounting | |
| Package dimensions | 371 × 253 × 220 mm | |
| Package weight | Approx. 8.2 kg | |
| EAN | 8013975326749 | |
| Standards | IEC/EN/BS 60947-3 and IEC/EN/BS 60947-6-1 | |
| HS Code | 85365080 |
Frequently Asked Questions
What is the Lovato GLCMB0250T4E110 used for?
The GLCMB0250T4E110 is used to transfer an electrical load between two independent power sources, such as a utility supply and a standby generator. Its integrated motor operator enables remote or automatic switching.
What is the current rating of the GLCMB0250T4E110?
The switch has a conventional free-air thermal current rating of 250 A. Final product selection should also consider the utilisation category, system voltage, conductor size and protective-device requirements.
What motor supply voltage does this model require?
The integrated motor operator is rated for a 110–125 V AC/DC control supply and has an operating voltage range of 77–165 V AC/DC.
Why is the GLCMB0250T4E110 a four-pole switch?
The four-pole configuration switches all three phase conductors together with the neutral. This allows complete separation between the normal and alternative power sources where neutral switching is required.
Can the GLCMB0250T4E110 be used in an ATS panel?
Yes. The motorised switch can be combined with a compatible automatic transfer controller to create an ATS system for mains, generator or alternative power-source applications.
What is the maximum system voltage?
The GLCMB0250T4E110 is suitable for low-voltage AC systems with an operating voltage of up to 690 V AC.
Which standards does this changeover switch conform to?
The GLCMB0250T4E110 conforms to IEC/EN/BS 60947-3 and IEC/EN/BS 60947-6-1.
Trusted for Professional Power-Control Systems
Lovato motorised changeover switches provide switchboard manufacturers, electrical contractors, OEMs and system integrators with a dependable solution for automatic and remotely controlled power-source transfer.
