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BIS4250A IMO Isolating Switch 4 Pole, 250 Amp, 230/400VAC
IMO BIS4250A is a 4-pole 250 A isolating switch disconnector for 230 / 400 V AC low-voltage electrical distribution and industrial isolation applications.
£83.24
Why Choose the IMO BIS4250A Isolating Switch?
The IMO BIS4250A is a robust 4-pole isolating switch disconnector designed to provide reliable electrical isolation in low-voltage distribution and industrial control applications. Part of the IMO range of modular isolating switches, it provides a dependable means of disconnecting circuits from the mains supply for maintenance, servicing and safety procedures.
Designed for high-current applications, the BIS4250A combines a compact modular construction with straightforward operation. It is manufactured in accordance with IEC 60947-3 and is compatible with the standard IMO MCB accessory range, helping simplify integration within distribution boards and electrical control systems.
With a rated current of 250 A, four poles and a rated AC voltage of 230 / 400 V AC, the BIS4250A is suited to demanding commercial and industrial installations where safe disconnection of multi-pole circuits is required.
Key Advantages
- Heavy-duty 250 A isolating switch for high-current electrical installations.
- 4-pole configuration for multi-pole circuit isolation.
- Suitable for 230 / 400 V AC low-voltage systems.
- Manufactured in accordance with IEC 60947-3.
- Compact modular construction for straightforward panel integration.
- Compatible with the standard range of IMO MCB accessories.
Key Features
- IMO BIS series isolating switch disconnector.
- 250 A rated current.
- 4-pole switching configuration.
- 230 / 400 V AC rated voltage.
- Manual switching operation.
- Low-voltage AC electrical isolation.
- 4-module modular format.
- Supports cable sizes up to 35 mm² / 2 AWG.
- Compatible with IMO modular circuit protection accessories.
Reliable Electrical Isolation for Maintenance and Safety
Isolating switch disconnectors provide a clearly defined means of separating electrical equipment from the mains supply. This allows electricians and maintenance engineers to work on circuits and equipment while the supply is safely isolated.
The IMO BIS series is designed for use in low-voltage electrical installations and is available in several pole and current configurations. The BIS4250A provides the highest-current 4-pole option in the range, making it particularly suitable for substantial distribution circuits and industrial electrical systems.
Typical Applications
- Industrial electrical distribution panels.
- Commercial distribution boards.
- Machinery and automation control cabinets.
- Main circuit isolation.
- Electrical maintenance isolation points.
- Low-voltage power distribution systems.
Technical Specifications
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| Current | 250 A | |
|---|---|---|
| Voltage | 400 V | |
| Phase | Three Phase | |
| Manufacturer | IMO Precision Controls | |
| Series | BIS Isolating Switches | |
| Model | BIS4250A | |
| Product type | Isolating switch disconnector | |
| Rated current | 250 A | |
| Rated voltage | 230 / 400 V AC | |
| Number of poles | 4 | |
| Number of modules | 4 | |
| Electrical type | AC | |
| Operation | Manual | |
| Voltage class | Low voltage | |
| Maximum cable size | 35 mm² | |
| Cable size | 2 AWG | |
| Standard | IEC 60947-3 | |
| Construction | Modular |
Frequently Asked Questions
What is the IMO BIS4250A used for?
The BIS4250A is used to manually isolate electrical circuits from the mains supply for maintenance, servicing and electrical safety purposes.
What is the rated current of the BIS4250A?
The IMO BIS4250A has a rated current of 250 A.
How many poles does the BIS4250A have?
The BIS4250A is a 4-pole isolating switch, allowing simultaneous isolation of four conductors.
What voltage is the IMO BIS4250A rated for?
The BIS4250A is rated for 230 / 400 V AC low-voltage electrical systems.
Which standard does the BIS4250A comply with?
The IMO BIS4250A is manufactured in accordance with IEC 60947-3 for low-voltage switchgear and controlgear switching devices.
Trusted Electrical Isolation from IMO
IMO isolating switch disconnectors provide dependable manual circuit isolation for electrical distribution, machinery and industrial control applications, with modular designs suited to modern low-voltage installations.
