ABB OTC63G2-4BS 63 A 4-pole manual change-over switch for safe transfer between mains and standby power supplies in industrial and commercial applications.
The ABB 1SCA162736R1001, also known as the OTC63G2-4BS, is a high-performance 63 A 4-pole manual change-over switch designed for safe and reliable transfer between two power sources in industrial and commercial electrical installations. As part of the proven ABB OT Plus Change-Over Switch range, it delivers dependable source switching for generator systems, distribution boards, OEM machinery and critical power applications.
The OTC63G2-4BS features a front-operated mechanism with flexible base or DIN rail mounting, making it ideal for panel builders and electrical contractors. Integrated screw terminals with IP20 protected front terminal clamps provide safe installation, while the supplied padlockable direct-mounted knob handle supports secure lockout procedures. The switch is also compatible with an optional external operating shaft for enclosure door operation.
With a 63 A general purpose current rating, 63 A AC-22A / AC-23A operational rating, four-pole switching and ABB's robust G2 frame construction, the OTC63G2-4BS offers long service life, dependable performance and safe manual power transfer in demanding industrial environments.
Manual change-over switches allow electrical loads to be safely transferred between two independent power sources, such as the mains supply and a standby generator. The ABB OTC63G2-4BS provides positive switching action, dependable electrical isolation and reliable long-term operation for critical power applications.
Its four-pole design enables complete isolation of all live conductors, including the neutral where required, making it suitable for generator installations, commercial buildings, industrial automation systems and critical infrastructure.
| Manufacturer | ABB |
|---|---|
| Series | OT Plus Change-Over Switches |
| Model | OTC63G2-4BS |
| Manufacturer Part Number | 1SCA162736R1001 |
| Product type | Manual change-over switch |
| General purpose current rating | 63 A |
| Rated operational current (AC-22A / AC-23A <415 V) | 63 A / 63 A |
| Number of poles | 4 |
| Frame size | G2 |
| Copper conductor capacity | 1.5 to 35 mm² |
| Maximum operating voltage | 800 V AC |
| Mounting type | Base or DIN rail mounting |
| Terminal type | Screw terminals with IP20 protected front terminal clamps |
| Handle type | Padlockable direct-mounted knob handle |
| Dimensions (H × W × D) | Approx. 144 × 100 × 96 mm |
| GTIN | 6417019928043 |
| HS Code | 85365080 |
| Country of Manufacture | Finland |
The OTC63G2-4BS is a manual change-over switch designed to safely transfer electrical loads between two separate power sources, such as the utility supply and a standby generator.
The switch has a 63 A general purpose current rating and is rated 63 A for both AC-22A and AC-23A applications.
This model features a 4-pole configuration, making it suitable for complete switching of three-phase systems with neutral.
Yes. The switch is suitable for both base mounting and DIN rail mounting, offering installation flexibility.
Yes. A padlockable direct-mounted operating handle is supplied as standard. External operating accessories are available separately.
ABB OT Plus change-over switches are trusted by panel builders, electrical contractors and OEM manufacturers for dependable power source transfer, robust construction and reliable long-term industrial performance.
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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...