ABB OT40F4C 4 pole 40 A manual change-over switch with open transition switching for industrial source transfer, generator change-over and control panel applications.
£119.23
The ABB OT40F4C is a compact and dependable 4-pole manual change-over switch designed for safe power transfer and circuit selection in industrial control panels, machinery and low voltage distribution systems. As part of the trusted ABB OT switch range, it provides reliable manual switching for non-fusible change-over applications.
This front-operated change-over switch is designed for base mounting and supports manual open transition switching between two supply sources or circuits. Its robust construction, protected terminals and compact footprint make it a practical choice for panel builders, OEMs and electrical engineers.
With a rated operational current of 40 A and a 4-pole configuration, the OT40F4C is ideal for manual transfer, source selection and change-over duties where three-phase plus neutral switching is required. The handle and shaft need to be ordered separately, allowing the correct operating accessories to be selected for the enclosure.
Change-over switches such as the ABB OT40F4C are used to manually transfer loads between two supply sources or electrical circuits. This makes them suitable for generator change-over, backup supply selection, bypass arrangements and other applications where controlled manual switching is required.
The OT40F4C is particularly suited to industrial panel building where compact size, reliable mechanical operation and flexible external operation are required. Its 4-pole configuration makes it suitable for three-phase plus neutral manual change-over applications in machinery and electrical distribution systems.
| Current | 40 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | OT Change-Over Switches |
| Model | OT40F4C |
| Product ID | 1SCA104934R1001 |
| EAN | 6417019390741 |
| Product type | Manual change-over switch / transfer switch |
| Number of poles | 4 pole |
| Rated operational current | 40 A |
| Rated operational voltage | Up to 750 V AC |
| Rated insulation voltage | 750 V |
| Rated impulse withstand voltage | 8 kV |
| Rated operational power AC-23A | 11 kW at 400 V |
| Operation | Front operated |
| Transition type | Open transition |
| Mounting type | Base mounted |
| Terminal type | Protected clamp terminals |
| Protection rating | IP20 |
| Dimensions (H × W × D) | approx. 68 × 96 × 68 mm |
| Weight | approx. 0.31 kg |
| HS Code | 85365080 |
| Country of Manufacture | Finland |
The ABB OT40F4C is used for manual change-over switching between two electrical sources or circuits in industrial panels, machinery and distribution systems.
The OT40F4C is a 4-pole change-over switch, making it suitable for three-phase plus neutral transfer and source selection applications.
The ABB OT40F4C has a rated operational current of 40 A.
Open transition means the switch disconnects from one source before connecting to the other, helping prevent the two sources from being connected together during switching.
No, the handle and shaft need to be ordered separately so they can be matched to the enclosure and installation requirements.
ABB OT change-over switches are widely used by panel builders, electrical engineers and OEM machine builders for reliable manual transfer switching, robust operation and flexible integration into industrial electrical systems.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...