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OTM800E4CM24D ABB 800A 4-Pole Motorised Changeover Switch 24V DC
ABB OTM800E4CM24D is an 800 A 4-pole motorised open-transition changeover switch with a 24 V DC motor operator for industrial and commercial power source transfer applications.
£5,205.98
Why Choose the ABB OTM800E4CM24D Motorised Changeover Switch?
The ABB OTM800E4CM24D is a heavy-duty 800 A 4-pole motorised changeover switch designed for reliable switching between two electrical power sources in industrial and commercial power distribution systems. As part of the ABB OT motorised changeover switch range, it combines high-current switching performance with an integrated motor operator for convenient remote control.
This motorised changeover switch provides I-O-II open-transition operation, allowing controlled transfer between two power sources with a defined OFF position. Its 4-pole configuration enables simultaneous switching of three phases and neutral, making it particularly suitable for mains-to-generator, standby supply and alternative source applications where neutral switching is required.
With a rated current of 800 A and a 24 V DC motor operating voltage, the OTM800E4CM24D is well suited to remotely controlled power transfer systems. It is supplied with a handle for manual operation, terminal bolt hardware, control-circuit connectors, a handle storage clip and spare fuses.
Key Advantages
- Heavy-duty 800 A motorised changeover switch for demanding power distribution applications.
- 4-pole configuration enables switching of three phases and neutral.
- Integrated 24 V DC motor operator supports remote electrical switching.
- I-O-II open-transition operation provides controlled transfer between alternative power sources.
- Manual operating handle provides local operation when required.
- Suitable for mains-generator, standby power and alternative supply switching systems.
Key Features
- ABB OT motorised changeover switch range.
- 800 A rated current.
- 4-pole switching configuration.
- 24 V DC motor operating voltage.
- I-O-II open-transition switching.
- 550 kVA rated apparent power at 400 V.
- 720 A AC-31B / 650 A AC-33B rated current at 415 V.
- 1000 V rated insulation voltage.
- 12 kV rated impulse withstand voltage.
- Manual operating handle and associated installation hardware supplied.
Reliable Motorised Power Source Transfer
Motorised changeover switches provide an effective means of transferring electrical loads between alternative power supplies. The ABB OTM800E4CM24D combines the switching mechanism and motor drive in a single assembly, enabling changeover operations to be initiated remotely from a control system while retaining manual operating capability.
Its 4-pole construction allows all three phases and the neutral conductor to be switched during source transfer. Combined with its 24 V DC motor control, high current capacity and robust electrical ratings, the OTM800E4CM24D is well suited to substantial industrial, commercial and infrastructure power distribution installations.
Typical Applications
- Mains-to-generator changeover systems.
- Standby and emergency power systems.
- Alternative mains supply switching.
- Industrial power distribution boards.
- Commercial and infrastructure electrical installations.
- Three-phase systems requiring switched neutral operation.
Technical Specifications
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| Operation | Motorised | |
|---|---|---|
| Device Type | Motorised changeover switch | |
| Series | OT Motorised Changeover Switches | |
| ABB order code | 1SCA022872R8420 | |
| Product type | Motorised changeover switch | |
| Rated current | 800 A | |
| Number of poles | 4 | |
| Motor operating voltage | 24 V DC | |
| Switching operation | I-O-II | |
| Transfer type | Open transition | |
| Rated operational current AC-21A | 800 A at 500 V and 690 V AC | |
| Rated operational current AC-22A | 800 A at 500 V and 690 V AC | |
| Rated operational current AC-23A | 800 A at 380–415 V, 500 V and 690 V AC | |
| Rated operational power AC-23A | 450 kW at 400 V AC | |
| Rated apparent power at 400 V | 550 kVA | |
| Rated current AC-31B at 415 V | 720 A | |
| Rated current AC-33B at 415 V | 650 A | |
| Rated insulation voltage | 1000 V | |
| Rated impulse withstand voltage | 12 kV | |
| Rated short-time withstand current | 20 kA rms for 1 s | |
| Conventional free-air thermal current | 800 A at 40 °C | |
| Fully enclosed thermal current | 800 A | |
| Power loss | 40 W | |
| Dimensions (W × H × D) | 476 × 250 × 299 mm | |
| Net weight | 25 kg |
Frequently Asked Questions
What is the ABB OTM800E4CM24D used for?
The OTM800E4CM24D is a motorised changeover switch used to transfer electrical loads between two power sources in industrial, commercial and standby power distribution systems.
What is the current rating of the OTM800E4CM24D?
The ABB OTM800E4CM24D has a rated current of 800 A.
How many poles does the OTM800E4CM24D have?
The OTM800E4CM24D has a 4-pole configuration, enabling switching of three phases and the neutral conductor.
What voltage does the motor operator require?
The integrated motor operator is designed for a 24 V DC supply.
Can the OTM800E4CM24D be operated manually?
Yes. The OTM800E4CM24D is supplied with a manual operating handle, together with a storage clip for the handle, allowing local manual operation when required.
Trusted ABB Power Switching Technology
ABB OT motorised changeover switches provide dependable source switching for industrial and commercial power distribution systems, combining robust electrical performance with motorised and manual operating capability.
