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abb Automatic transfer switch 40 amps with 4 Poles
ABB OTM40F4C21D400C automatic transfer switch, a 40 A four-pole motor-operated ATS designed for reliable low-voltage power source transfer applications.
£1,104.38
Why Choose the ABB OTM40F4C21D400C Automatic Transfer Switch?
The ABB OTM40F4C21D400C is a compact and reliable automatic transfer switch (ATS) designed to provide automatic changeover between two power sources in low-voltage electrical distribution systems. As part of the advanced ABB Compact ATS series, it is developed for applications requiring dependable power continuity, including standby generator systems, commercial installations and industrial control environments.
This motor-operated automatic transfer switch features an integrated 21D controller with adjustable operating parameters, enabling flexible configuration and simplified commissioning. Its compact design combines switching and control functionality in a single unit, reducing panel space requirements while maintaining dependable automatic source transfer operation.
With a rated operational current of 40 A, a four-pole switching configuration and a 380–415 V AC operating voltage, the OTM40F4C21D400C is suitable for mains-to-generator changeover systems, distribution panels and industrial power continuity applications.
Key Advantages
- Compact automatic transfer switch designed for power continuity applications.
- 40 A rated operational current suitable for low-voltage installations.
- 4-pole switching configuration including switched neutral capability.
- Integrated 21D automatic controller with adjustable operating parameters.
- Motor-operated changeover functionality for reliable source transfer.
- Compact design simplifies switchboard and control panel installation.
Key Features
- ABB Compact ATS series.
- 40 A rated operational current.
- 4-pole automatic transfer switching.
- 380–415 V AC motor operating voltage.
- Integrated 21D controller with adjustable parameters.
- Open transition 1-0-2 switching operation.
- Self-supplied automatic transfer unit.
- Base mounting or DIN rail mounting capability.
Reliable Automatic Power Transfer for Critical Systems
Automatic transfer switches such as the ABB OTM40F4C21D400C monitor available power sources and automatically transfer connected loads when a primary supply fails or a backup source becomes available. This helps improve electrical system resilience and reduce downtime in essential installations.
The ABB Compact ATS range is designed for electrical engineers, panel builders and facility operators requiring compact, dependable and easy-to-integrate automatic changeover solutions. Its integrated motor mechanism and adjustable controller simplify installation while providing reliable operation in modern power distribution systems.
Typical Applications
- Automatic mains and standby generator transfer systems.
- Commercial distribution boards and switchboards.
- Industrial control panels.
- Backup power and critical infrastructure systems.
- HVAC and building services applications.
- Telecommunications and small power continuity systems.
Technical Specifications
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| Mounting Type | DIN rail | |
|---|---|---|
| Operation | Automatic | |
| Device Type | Automatic transfer switch | |
| Poles | 4-pole | |
| HS Code | 85365080 | |
| Country of Manufacture | China | |
| Manufacturer | ABB | |
| Series | Compact ATS Switches | |
| Model | OTM40F4C21D400C | |
| Product type | Automatic transfer switch | |
| Product ID | 1SCA151253R1001 | |
| Rated operational current | 40 A | |
| Number of poles | 4P | |
| Controller type | 21D | |
| Transition type | Open transition 1-0-2 | |
| Motor operational voltage | 380–415 V AC | |
| Rated operational voltage | 380–415 V AC | |
| Rated insulation voltage (Ui) | 800 V | |
| Rated impulse withstand voltage (Uimp) | 8 kV | |
| Short-time withstand current | 2.5 kA for 1 second | |
| Rated operational power | 18.5 kW at 380–415 V AC | |
| Power loss | approx. 1.6 W per pole | |
| Protection rating | Front IP20 | |
| Mounting type | Base mounting or DIN rail mounting | |
| Dimensions (H × W × D) | approx. 103 × 286 × 131 mm | |
| Weight | approx. 2.11 kg |
Frequently Asked Questions
What is the ABB OTM40F4C21D400C used for?
The ABB OTM40F4C21D400C is an automatic transfer switch used to transfer electrical loads between two power sources such as mains and standby generators.
What current rating does this transfer switch support?
The switch supports a rated operational current of 40 A for low-voltage commercial and industrial applications.
What voltage does the ABB OTM40F4C21D400C operate at?
The OTM40F4C21D400C operates with a 380–415 V AC rated voltage range.
How many poles does this automatic transfer switch have?
The OTM40F4C21D400C features a 4-pole switching configuration including simultaneous neutral switching.
What type of controller is included?
The transfer switch includes an integrated 21D controller with adjustable operating parameters for automatic transfer operation.
Trusted by Electrical Engineers Worldwide
ABB Compact ATS automatic transfer switches are widely used in power distribution systems to provide reliable source transfer, improved electrical resilience and efficient backup power management.
