ABB OTHV250E12W three-pole 250 A front-operated base-mounted switch disconnector for industrial electrical isolation in 800 to 1000 V AC systems.
The ABB OTHV250E12W, product code 1SCA162974R1001, is a robust three-pole switch disconnector designed for safe isolation and dependable switching in demanding high-voltage AC electrical systems. As part of the advanced ABB OTHV switch disconnector series, it is suitable for industrial power distribution, automation equipment and electrical installations operating at voltages between 800 and 1000 V AC.
This manually operated switch disconnector combines a compact base-mounted construction with reliable electrical performance. Its front-operated mechanism supports straightforward installation inside switchboards, control panels and electrical enclosures, while its 250 A thermal current rating makes it suitable for demanding industrial circuits.
With a rated operational current of 250 A for AC-21A and AC-22A applications, the OTHV250E12W provides effective circuit isolation and load switching. It also supports an operational current of 135 A in AC-23A applications. The operating shaft and handle are supplied separately, allowing the installation to be configured for the requirements of the enclosure or switchboard.
Switch disconnectors such as the ABB OTHV250E12W provide a secure means of isolating electrical equipment from the power supply. This enables safer inspection, maintenance and servicing of machinery, switchboards and industrial electrical systems.
The OTHV series is developed for installations requiring dependable operation at elevated AC voltages. Its robust switching mechanism, high current capacity and strong impulse withstand rating make it suitable for industrial environments where electrical safety and operational reliability are essential.
| Current | 250 A |
|---|---|
| Voltage | 800 V |
| Phase | Three Phase |
| IP Rating | IP00 |
| Manufacturer | ABB |
| Series | OTHV |
| Model | OTHV250E12W |
| Product ID | 1SCA162974R1001 |
| Product type | Switch disconnector |
| Number of poles | 3 |
| Operating method | Front operated |
| Mounting type | Base mounting |
| Rated operational voltage | 800–1000 V AC |
| Rated operational current, AC-21A | 250 A |
| Rated operational current, AC-22A | 250 A |
| Rated operational current, AC-23A | 135 A |
| Conventional thermal current | 250 A |
| Rated impulse withstand voltage | 12 kV |
| Dimensions (W × H × D) | 174.5 × 170 × 82.5 mm |
| Net weight | approx. 1.5 kg |
| EAN | 6417019929262 |
| Country of origin | Finland |
| Handle and shaft | Not included |
| HS Code | 85365080 |
| Country of Manufacture | Finland |
The OTHV250E12W is used to switch and safely isolate industrial electrical circuits operating between 800 and 1000 V AC.
It supports a rated operational current of 250 A for AC-21A and AC-22A applications and 135 A for AC-23A applications.
The switch disconnector has a three-pole configuration, making it suitable for three-phase electrical systems.
No. The operating handle and shaft are not included and must be selected and ordered separately to suit the installation.
It is typically base mounted inside electrical switchboards, control panels or industrial enclosures and operated from the front using a compatible shaft and handle.
ABB switch disconnectors are widely specified by electrical engineers, panel builders and industrial equipment manufacturers for reliable circuit isolation, robust switching performance and safe operation in demanding electrical installations.
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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...