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1SCA162740R1001 ABB OTC30G3-4BS OT Plus Panel Mounted Switch Disconnector
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.
Why Choose the ABB 1SCA162740R1001 OTC30G3-4BS Change-Over Switch?
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.
Key Advantages
- Reliable 30 A manual change-over switch.
- 4-pole configuration for switching three phases and neutral.
- Positive I-0-II break-before-make operation.
- Suitable for base or DIN rail mounting.
- Padlockable direct-mounted operating handle supplied.
- Compact G3 frame for industrial and commercial installations.
Key Features
- ABB OT Plus Change-Over Switch series.
- Model: OTC30G3-4BS.
- Manufacturer Part Number: 1SCA162740R1001.
- 30 A general-purpose current rating.
- 4-pole manual change-over switch.
- Front-operated mechanism.
- I-0-II operating positions.
- Base or DIN rail mounting.
- Integrated screw terminals.
- IP20 protected front terminal clamps.
- Padlockable direct-mounted operating handle included.
- Compatible with optional external operating shaft.
Reliable Manual Power Source Transfer
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.
Typical Applications
- Generator change-over panels.
- Mains and standby power switching.
- Industrial control panels.
- Commercial building electrical services.
- OEM machinery.
- Critical power and backup systems.
Technical Specifications
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| Mounting Type | DIN rail | |
|---|---|---|
| Device Type | Switch Disconnector | |
| Product Series | ABB OT Plus | |
| Poles | 4-pole | |
| 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 |
Frequently Asked Questions
What is the ABB 1SCA162740R1001 used for?
The OTC30G3-4BS is designed to manually transfer electrical loads between two independent power sources, such as the mains supply and a standby generator.
What is the current rating of the OTC30G3-4BS?
The switch has a 30 A general-purpose current rating.
Why does this switch have four poles?
The four-pole design allows simultaneous switching of the three phase conductors and the neutral conductor for complete source isolation.
Can the OTC30G3-4BS be mounted on a DIN rail?
Yes. The switch is designed for both base mounting and DIN rail mounting.
Is the operating handle included?
Yes. A padlockable direct-mounted operating handle is supplied as standard. An optional shaft and external handle are available separately.
Trusted by Electrical Professionals Worldwide
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.
