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1SCA162533R1001 ABB OT30G3-3DS Switch-disconnector OT Plus30 A, size G3, 3-pole, door mounting,
ABB OT125G3-4DSN1 125A 4-pole door-mounted switch disconnector with left-hand neutral pole for industrial electrical isolation.
£74.75
Why Choose the ABB OT125G3-4DSN1 Switch Disconnector?
The ABB OT125G3-4DSN1 (SKU: 1SCA162533R1001) is a robust 4-pole door-mounted switch disconnector designed to provide safe, dependable electrical isolation for industrial machinery, commercial switchboards and low-voltage power distribution systems. As part of the proven ABB OT Plus switch disconnector range, it delivers reliable switching performance, compact dimensions and long-term durability for demanding industrial applications.
Designed specifically for door-mounted installations, the OT125G3-4DSN1 features integrated screw terminals with IP20 protected terminal clamps from the front for improved installer safety. It is intended for use with ABB external operating handles and shafts (sold separately), making it ideal for enclosed control panels and switchgear assemblies. The N1 configuration incorporates the neutral pole on the left-hand side for applications requiring neutral isolation.
With a rated operational current of 125 A, a 4-pole configuration and a maximum operational voltage of 690 V AC, the OT125G3-4DSN1 provides dependable isolation for three-phase systems with neutral across industrial automation, motor control centres and commercial electrical installations.
Key Advantages
- Heavy-duty 4-pole door-mounted switch disconnector.
- 125 A rated operational current for demanding industrial applications.
- Left-hand fourth neutral pole (N1) for complete circuit isolation.
- Door-mounted design keeps operating controls safely outside the enclosure.
- Protected IP20 terminal clamps improve installation safety.
- Reliable ABB OT Plus construction ensures long service life.
Key Features
- ABB OT Plus switch disconnector series.
- Model: OT125G3-4DSN1.
- Order code: 1SCA162533R1001.
- 125 A rated operational current.
- 4-pole configuration (N1 left-hand neutral).
- Door-mounted installation.
- Integrated screw terminal connections.
- Compatible with ABB external operating handles and shafts.
- IP20 protected front terminal clamps.
- Compact G3 frame.
Reliable Electrical Isolation for Industrial Installations
The ABB OT125G3-4DSN1 provides a safe and visible means of isolating electrical circuits before maintenance and servicing. Its door-mounted design enables operators to disconnect power externally without opening the enclosure, improving personnel safety while reducing downtime.
Part of ABB's proven OT Plus family, this switch disconnector combines dependable switching performance, robust construction and straightforward installation, making it an excellent choice for electrical contractors, OEM manufacturers and panel builders.
Typical Applications
- Industrial control panels.
- Motor control centres.
- Low-voltage power distribution systems.
- OEM machinery.
- Commercial switchboards.
- Industrial automation systems.
Technical Specifications
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| Voltage | 690 V | |
|---|---|---|
| Mounting Type | Door / front mounting | |
| Product Series | ABB OT Plus | |
| Power | 18.5 kW | |
| Device Type | Switch Disconnector | |
| Supply Type | AC | |
| Current | 40 A | |
| Phase | Three Phase | |
| Poles | 4-pole | |
| Manufacturer | ABB | |
| Series | OT Plus | |
| Model | OT125G3-4DSN1 | |
| Order code | 1SCA162533R1001 | |
| Product type | Door-mounted switch disconnector | |
| Rated operational current | 125 A | |
| Number of poles | 4 | |
| Neutral position | N1 (4th pole left) | |
| Rated operational voltage | Up to 690 V AC | |
| Maximum motor power (AC-23A, 400/415 V) | 55 kW | |
| Mounting type | Door mounted | |
| Connection type | Screw terminals | |
| Terminal protection | IP20 (front) | |
| Standards | IEC 60947-3 | |
| HS Code | 85365080 | |
| Country of Manufacture | Finland |
Frequently Asked Questions
What is the ABB OT125G3-4DSN1 used for?
The ABB OT125G3-4DSN1 is designed to safely isolate four-pole electrical circuits in industrial machinery, switchboards and power distribution systems.
What is the rated current of the OT125G3-4DSN1?
The switch disconnector has a rated operational current of 125 A.
What does N1 mean on this model?
N1 indicates the switch features a left-hand fourth neutral pole, allowing all three phases and the neutral conductor to be isolated together.
Is this a door-mounted switch disconnector?
Yes. The OT125G3-4DSN1 is specifically designed for door-mounted installations and is intended for use with ABB external operating handles and shafts.
Where is the OT125G3-4DSN1 typically installed?
It is commonly installed in industrial control panels, motor control centres, OEM machinery and commercial power distribution systems.
Trusted by Electrical Professionals Worldwide
ABB OT Plus switch disconnectors are trusted by electrical engineers, OEM manufacturers and panel builders for dependable circuit isolation, robust construction and reliable long-term performance across demanding industrial environments.
