ABB OT25G1-4DQN2 25 A four-pole door-mounted switch disconnector for safe isolation of low-voltage electrical systems.
£735.80
The ABB 1SCA163439R1001, also known as the OT25G1-4DQN2, is a compact and reliable 25 A four-pole switch disconnector engineered for safe isolation of low-voltage electrical circuits in industrial, commercial and OEM applications. Part of the trusted ABB OT Plus switch disconnector range, it provides dependable switching performance and is specifically designed for door-mounted operation within electrical panels and switchboards.
Featuring a front-operated mechanism with integrated screw terminals, the OT25G1-4DQN2 enables safe manual isolation of electrical equipment during maintenance and servicing. It is designed for use with an external operating handle and shaft, allowing convenient operation from the enclosure door while keeping live components safely enclosed.
With a rated current of 25 A, a four-pole configuration and an N2 neutral arrangement, this switch disconnector is ideal for three-phase electrical systems requiring complete circuit isolation. Its compact G1 frame helps maximise panel space while delivering long-term operational reliability.
The ABB OT25G1-4DQN2 provides safe manual isolation of electrical circuits, allowing maintenance work to be carried out without exposing personnel to live equipment. Its four-pole switching design ensures complete isolation of three-phase installations where the neutral conductor must also be disconnected.
Designed for modern electrical enclosures, the OT Plus range combines compact dimensions, durable switching performance and flexible installation options, making it a popular choice for panel builders, machinery manufacturers and industrial electricians.
| Current | 25 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | OT Plus |
| Product ID | 1SCA163439R1001 |
| Model | OT25G1-4DQN2 |
| Product type | Manual switch disconnector |
| Rated current | 25 A |
| Number of poles | 4 |
| Neutral configuration | N2 |
| Maximum operational voltage | 800 V AC |
| Rated motor power (AC-23A, 400 V) | 11 kW |
| Terminal type | Integrated screw terminals |
| Operation | Front operated, door mounted |
| Mounting type | Door mounting |
| Frame size | G1 |
| Operating handle | External handle and shaft required (not included) |
| HS Code | 85365080 |
| Country of Manufacture | Finland |
It is used to safely isolate low-voltage electrical circuits in industrial and commercial electrical installations.
The OT25G1-4DQN2 has a rated operational current of 25 A.
Yes. It features a four-pole configuration for isolating three phases and the neutral conductor.
No. This door-mounted version is designed for use with a compatible external operating handle and shaft, which are supplied separately.
It is commonly installed inside industrial control panels, switchboards and electrical distribution systems requiring safe manual isolation.
ABB OT Plus switch disconnectors are trusted by electrical contractors, panel builders and OEM manufacturers worldwide for dependable isolation, compact installation and long-lasting performance in demanding industrial environments.
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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...