ABB OT125M4 4-pole 125 A front operated modular switch disconnector, Product ID 1SCA022429R9220, for distribution boards, industrial control panels and low voltage circuit isolation applications.
£171.55
The ABB OT125M4 is a compact and reliable 4-pole modular switch disconnector designed for safe manual isolation of electrical circuits in distribution boards, industrial control panels and low voltage power systems. As part of the proven ABB OT Series, it provides dependable switching performance for electricians, panel builders and OEM machine builders requiring compact circuit isolation.
This front operated, non-fusible switch disconnector is designed for base mounting and DIN rail mounting, making it especially suitable for distribution boards with standard 45 mm slots. Its protected clamp terminals, compact modular body and robust construction make it well suited to installations where space efficiency, reliability and safe operation are essential.
With a 125 A rated operational current, 4-pole configuration and Product ID 1SCA022429R9220, the OT125M4 is ideal for three-phase systems requiring neutral isolation or additional pole switching. The operating handle and shaft are supplied separately, allowing the installation to be configured around the enclosure and panel layout.
Switch disconnectors such as the ABB OT125M4 provide a safe and dependable way to isolate electrical circuits during servicing, inspection and maintenance. By allowing the supply to be manually disconnected, they help protect personnel and equipment while supporting safe working procedures across low voltage installations.
The OT125M4 is particularly useful where a compact modular isolator is required in a distribution board, switchboard or control panel. Its 4-pole format is suitable for three-phase systems requiring neutral switching or additional pole isolation, while its DIN rail mounting capability makes it practical for space-restricted electrical assemblies.
| Current | 125 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | OT Switch Disconnectors |
| Model | OT125M4 |
| Product ID | 1SCA022429R9220 |
| EAN | 6417019135427 |
| Product type | Switch disconnector / non-fusible disconnect switch |
| Rated operational current | 125 A |
| Number of poles | 4 |
| Rated operational voltage | Up to 750 V AC |
| Rated insulation voltage | 750 V |
| Rated impulse withstand voltage | 8 kV |
| Operation | Front operated |
| Mounting type | Base mounting / DIN rail mountable |
| Terminal type | Protected clamp terminals |
| Protection rating | IP20 front |
| Suitable board slot | 45 mm distribution board slot |
| Standards | IEC 60947-3 |
| Handle and shaft | Not included |
| Dimensions (H × W × D) | approx. 96.5 × 100 × 74 mm |
| Weight | approx. 0.49 kg |
| HS Code | 85365015 |
| Country of Manufacture | Finland |
The OT125M4 is used to safely isolate electrical circuits in distribution boards, control panels, machinery and low voltage power systems.
The ABB OT125M4 has a 4-pole configuration, making it suitable for three-phase systems requiring neutral switching or additional pole isolation.
The OT125M4 has a 125 A rated operational current.
Yes. The OT125M4 is suitable for DIN rail mounting and is also suitable for distribution boards with standard 45 mm slots.
No. The operating handle and shaft are not included and should be selected separately to suit the enclosure and installation requirements.
ABB OT Series switch disconnectors are widely used by electrical engineers, panel builders and machine builders to provide safe isolation, reliable switching and compact installation in industrial and commercial low voltage systems.
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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...