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IS4P20L IMO Enclosed Rotary Isolators 20A 230 – 440V 4 poles
Why Choose the IMO IS4P20L Enclosed Rotary Isolator?
The IMO IS4P20L is a robust 20 A four-pole enclosed rotary isolator switch designed to provide safe and reliable electrical isolation for industrial, commercial and building services applications. Housed within a durable IP65-rated polycarbonate enclosure, it is ideal for installations requiring a weather-resistant local isolator close to machinery or equipment.
Featuring a lockable red and yellow rotary handle, the IS4P20L enables operators to safely disconnect three-phase plus neutral circuits during maintenance and servicing. The enclosure incorporates an interlocked lid to help prevent accidental opening while the switch is in the ON position, supporting safe isolation procedures.
With its compact surface-mounted enclosure, multiple cable gland knockouts and external mounting points, the IMO IS4P20L offers straightforward installation across a wide range of industrial environments. It is commonly specified by electrical contractors, machine builders and panel manufacturers where dependable local isolation is essential.
Key Advantages
- Heavy-duty 20 A enclosed rotary isolator.
- Four-pole switching for three-phase plus neutral circuits.
- IP65 weather-resistant enclosure suitable for indoor and outdoor installations.
- Lockable red and yellow rotary handle for safe isolation.
- Interlocked enclosure lid enhances operator safety.
- Ideal for machinery, HVAC equipment and industrial electrical installations.
Key Features
- IMO IS4P enclosed rotary isolator series.
- 20 A AC21 rated operational current.
- Four-pole configuration.
- 230-440 V AC operating voltage.
- Lockable rotary operating handle.
- Polycarbonate IP65 enclosure.
- External mounting points and multiple gland knockouts.
- Suitable for surface mounting.
Reliable Local Isolation for Industrial Equipment
Local isolator switches provide a safe means of disconnecting electrical equipment before maintenance or servicing. The IMO IS4P20L simultaneously isolates all four conductors, making it suitable for three-phase plus neutral installations where complete circuit isolation is required.
Its lockable rotary handle and robust IP65 enclosure make it particularly suitable for factories, workshops, HVAC installations and outdoor plant where dependable electrical isolation and environmental protection are essential.
Typical Applications
- Industrial machinery.
- HVAC and air conditioning equipment.
- Motor isolation.
- Commercial electrical installations.
- Pump and ventilation systems.
- Three-phase distribution equipment.
Technical Specifications
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| Mounting Type | Enclosed / surface | |
|---|---|---|
| Device Type | Enclosed DC isolator | |
| Current | 20 A | |
| Voltage | 440 V | |
| Phase | Three Phase | |
| Poles | 4-pole | |
| Manufacturer | IMO Precision Controls | |
| Series | IS4P Enclosed Rotary Isolators | |
| Model | IS4P20L | |
| Product type | Enclosed rotary isolator switch | |
| Rated operational current (AC21) | 20 A | |
| Rated operating voltage | 230-440 V AC | |
| Rated insulation voltage | 690 V | |
| Number of poles | 4 | |
| Frequency | 50 / 60 Hz | |
| Protection rating | IP65 | |
| Enclosure material | Polycarbonate | |
| Maximum cable size | 10 mm² | |
| Mounting type | Surface mounting | |
| Dimensions (H × W × D) | Approx. 175 × 115 × 100 mm | |
| Weight | Approx. 0.75 kg |
Frequently Asked Questions
What is the IMO IS4P20L used for?
The IMO IS4P20L provides safe local isolation of three-phase electrical circuits for machinery, HVAC systems and industrial equipment.
What is the current rating of the IS4P20L?
The isolator has a 20 A AC21 rated operational current.
Is the enclosure suitable for outdoor use?
Yes. The enclosure has an IP65 protection rating, making it suitable for indoor and outdoor environments where protection against dust and water is required.
Can the rotary handle be locked?
Yes. The red and yellow rotary operating handle is lockable to help prevent unauthorised operation during maintenance work.
What type of electrical systems is the IS4P20L designed for?
It is designed for four-pole three-phase plus neutral electrical systems operating between 230 and 440 V AC.
Trusted by Electrical Professionals
IMO enclosed rotary isolators are widely trusted by electrical contractors, panel builders and industrial engineers for reliable electrical isolation, durable construction and dependable long-term performance in demanding environments.
