ABB OTHV125G03 3-pole 125A switch disconnector designed for 800 to 1000 V AC industrial power distribution, control panels and electrical isolation applications.
The ABB OTHV125G03 (1SCA162936R1001) is a high-performance 3-pole switch disconnector engineered for safe isolation and dependable switching in high-voltage industrial electrical systems. Designed for applications operating between 800 and 1000 V AC, this robust switch disconnector delivers reliable performance for power distribution, renewable energy installations and industrial control panels.
Manufactured by ABB, the OTHV series is trusted by panel builders, OEMs and industrial engineers who require safe, durable and efficient isolation equipment. Its front-operated, base-mounted design allows convenient installation while offering excellent mechanical reliability and long service life. Please note that the operating handle and shaft are supplied separately.
With a 125 A rated operational current, IP20 front protection and screw terminal connections, the OTHV125G03 provides dependable isolation for demanding electrical installations while complying with recognised international standards for low-voltage switching devices.
Switch disconnectors provide a safe and visible means of isolating electrical circuits during maintenance, servicing and equipment replacement. The ABB OTHV125G03 is designed to offer dependable switching performance while protecting personnel and equipment in demanding industrial environments.
Its robust construction, high voltage capability and long mechanical life make it suitable for switchboards, photovoltaic installations, industrial machinery and electrical distribution systems where reliable manual isolation is essential.
| Current | 125 A |
|---|---|
| Voltage | 800 V |
| Phase | Three Phase |
| IP Rating | IP20 |
| Manufacturer | ABB |
| Series | OTHV |
| Model | OTHV125G03 |
| Manufacturer Part Number | 1SCA162936R1001 |
| Product type | Switch disconnector |
| Number of poles | 3 |
| Rated operational voltage | 800 to 1000 V AC |
| Rated operational current (AC-21A) | 125 A |
| Rated insulation voltage (Ui) | 1000 V |
| Rated impulse withstand voltage (Uimp) | 12 kV |
| Protection rating | IP20 (front) |
| Connection type | Screw terminals |
| Cable size | 10 to 70 mm² copper |
| Mechanical durability | 20,000 operations |
| Dimensions (H × W × D) | approx. 130 × 123 × 73 mm |
| Weight | approx. 0.8 kg |
| HS Code | 85365080 |
| Country of Manufacture | Finland |
It is used to safely isolate electrical circuits in industrial power distribution, machinery and renewable energy installations.
The device is designed for electrical systems operating between 800 and 1000 V AC.
The OTHV125G03 is a 3-pole switch disconnector.
No. The operating shaft and handle are supplied separately and should be ordered if required.
It is commonly installed within industrial control panels, switchboards and electrical distribution systems requiring reliable manual isolation.
ABB switch disconnectors are widely specified by electrical engineers, panel builders and OEM manufacturers for dependable isolation, long-term durability and safe operation across demanding industrial power 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...