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OTM1250E4CM24D ABB 1250A 4 Pole Motorised Change Over Switch
ABB OTM1250E4CM24D motorised change over switch with 1250 A rating, 4 pole configuration and 24 V DC motor operation for automatic power transfer applications.
£5,885.00
Why Choose the ABB OTM1250E4CM24D Motorised Change Over Switch?
The ABB OTM1250E4CM24D is a high-performance motorised change over switch designed for automatic and remote transfer switching between electrical power sources in industrial, commercial and critical power applications. As part of the advanced ABB OTM motorised change over switch series, it provides reliable automated operation, safe source transfer and dependable power management for high-current installations. :chatgpt-content-reference{index="0"}
This motor-operated change over switch combines a robust switching mechanism with an integrated 24 V DC motor operator, allowing electrical control from automatic transfer systems, PLCs and remote control equipment. The unit includes a handle for manual operation, terminal bolt kit, control circuit connectors, handle storage clip and spare fuses for practical installation and operation. :chatgpt-content-reference{index="1"}
With a rated current of 1250 A and a 4-pole configuration, the OTM1250E4CM24D is designed for demanding power transfer applications requiring automatic changeover capability. Its open transition switching design and switched fourth pole provide reliable circuit transfer for high-current electrical systems. :chatgpt-content-reference{index="2"}
Key Advantages
- Reliable motorised change over switch for automatic power transfer.
- 1250 A rated current capacity for high-current electrical systems.
- 4-pole configuration with switched simultaneous fourth pole.
- 24 V DC motor operation for remote and automatic control.
- Open transition switching for controlled source transfer.
- Suitable for generator, mains and critical power applications.
Key Features
- ABB OTM motorised change over switch series.
- OTM1250E4CM24D model.
- 1250 A rated operational current.
- 4-pole motorised changeover operation.
- 24 V DC motor supply.
- Open transition switching type.
- Switched simultaneous fourth pole positioned on the right side.
- Direct mounted black handle for manual operation.
- Front operated base mounting design.
- Screw terminal connection system.
Reliable Automatic Power Transfer Control
Motorised change over switches such as the ABB OTM1250E4CM24D provide an effective solution for automatically transferring electrical loads between preferred and alternative power sources. They are commonly used where continuity of supply, remote control and reliable switching performance are required.
The ABB OTM series combines advanced motorised operation with robust switching technology, enabling integration into automatic transfer systems, generator control applications and modern electrical infrastructure.
Typical Applications
- Automatic mains failure systems.
- Generator and utility power transfer.
- Critical power distribution installations.
- Industrial electrical systems.
- Commercial building power management.
- Energy management and automation systems.
Technical Specifications
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| Mounting Type | Base mounting | |
|---|---|---|
| Operation | Motorised | |
| Device Type | Motorised changeover switch | |
| Series | OTM Motorised Change Over Switches | |
| Product type | Motorised change over switch | |
| Rated current | 1250 A | |
| Number of poles | 4 poles | |
| Motor operational voltage | 24 V DC | |
| Transition type | Open | |
| Rated operational voltage | 1000 V | |
| Rated insulation voltage | 1000 V | |
| Rated impulse withstand voltage | 12 kV | |
| Rated short-time withstand current | 50 kA rms for 1 s | |
| Rated operational power AC-23A | 710 kW at 380–415 V AC | |
| Mounting type | Base mounting | |
| Operating mode | Front operated | |
| Handle type | Direct mounted handle | |
| Handle colour | Black | |
| Protection rating | Front IP20 | |
| Terminal type | Screw terminals | |
| Fourth pole type | Switched - simultaneous function | |
| Fourth pole position | Right side | |
| Power loss | 29 W per pole | |
| Dimensions (H × W × D) | approx. 306 × 587 × 297 mm | |
| Weight | approx. 65 kg |
Frequently Asked Questions
What is the ABB OTM1250E4CM24D used for?
The ABB OTM1250E4CM24D is used for automatic motorised changeover switching between electrical power sources in industrial and commercial systems.
What is the current rating of this motorised change over switch?
The OTM1250E4CM24D has a rated current of 1250 A.
How many poles does the ABB OTM1250E4CM24D have?
The ABB OTM1250E4CM24D is a 4-pole motorised change over switch with a switched simultaneous fourth pole.
What motor supply voltage is required?
The motor operator of the OTM1250E4CM24D operates from a 24 V DC supply.
Where is this switch typically installed?
The OTM1250E4CM24D is typically installed in automatic transfer systems, electrical switchboards and critical power distribution equipment.
Trusted by Electrical Engineers Worldwide
ABB OTM motorised change over switches are widely used by electrical professionals to provide reliable automatic transfer, remote control and power continuity solutions in modern electrical installations.
