ABB OTC30G3-4BS 30 A 4-pole manual change-over switch with I-0-II operation, padlockable direct-mounted handle and base or DIN rail mounting.
The ABB 1SCA162740R1001, also known as the OTC30G3-4BS, is a high-quality 30 A 4-pole manual change-over switch designed for the safe transfer of electrical loads between two independent power sources. As part of the ABB OT Plus Change-Over Switch range, it provides dependable performance for generator change-over systems, industrial control panels, commercial buildings and OEM machinery.
The OTC30G3-4BS features a front-operated I-0-II switching mechanism with positive break-before-make operation, ensuring safe isolation between incoming power supplies. It supports both base mounting and DIN rail mounting, while the supplied padlockable direct-mounted operating handle helps support lockout procedures during maintenance. IP20 protected front terminal clamps improve installation safety.
With a 30 A general-purpose current rating, four-pole switching capability and ABB's durable G3 frame, the OTC30G3-4BS offers reliable manual source transfer and long-term performance in demanding industrial environments.
The ABB OTC30G3-4BS enables safe manual transfer between two independent electrical supplies, such as the utility mains and a standby generator. Its break-before-make switching action ensures one source is disconnected before the other is connected, helping to prevent unwanted parallel operation.
The four-pole configuration switches all three phases together with the neutral conductor, making it suitable for installations requiring complete source isolation and secure power transfer.
| Manufacturer | ABB |
|---|---|
| Series | OT Plus Change-Over Switches |
| Model | OTC30G3-4BS |
| Manufacturer Part Number | 1SCA162740R1001 |
| GTIN | 6417019928081 |
| Product type | Manual change-over switch |
| General-purpose current rating | 30 A |
| Number of poles | 4 |
| Operating positions | I-0-II |
| Switching sequence | Break-before-make |
| Frame size | G3 |
| Copper conductor range | 12 AWG to 2/0 AWG |
| Maximum operational voltage | Up to 600 V AC (UL) |
| Mounting type | Base or DIN rail mounting |
| Terminal type | Screw terminals with IP20 front protection |
| Handle type | Padlockable direct-mounted knob handle |
| HS Code | 85365080 |
| Country of Manufacture | Finland |
The OTC30G3-4BS is designed to manually transfer electrical loads between two independent power sources, such as the mains supply and a standby generator.
The switch has a 30 A general-purpose current rating.
The four-pole design allows simultaneous switching of the three phase conductors and the neutral conductor for complete source isolation.
Yes. The switch is designed for both base mounting and DIN rail mounting.
Yes. A padlockable direct-mounted operating handle is supplied as standard. An optional shaft and external handle are available separately.
ABB OT Plus change-over switches are trusted by panel builders, electrical contractors and OEM manufacturers for dependable source transfer, robust construction and long-term industrial performance.
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
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...