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IS4P100 IMO Enclosed Rotary Isolators 100A 230 – 440V 4 poles
Why Choose the IMO IS4P100 Enclosed Rotary Isolator?
The IMO IS4P100 is a heavy-duty 100 A four-pole enclosed rotary isolator switch designed to provide safe and dependable local isolation for industrial machinery, commercial installations and electrical distribution equipment. Its four-pole configuration enables the simultaneous disconnection of three phase conductors and a neutral conductor, making it suitable for three-phase plus neutral systems.
Housed in a durable IP65-rated flame-retardant polycarbonate enclosure, the IS4P100 offers effective protection against dust and water ingress for demanding indoor and outdoor environments. A highly visible lockable rotary handle provides clear ON and OFF operation and can help prevent unauthorised reconnection while maintenance is being carried out.
The enclosure features an interlocked lid, external mounting points and multiple cable-entry knockouts for straightforward installation. With a rated three-phase motor capacity of 37 kW at 415 V AC and a maximum cable capacity of 35 mm², the IMO IS4P100 is well suited to higher-current machinery, motor and distribution applications.
Key Advantages
- Heavy-duty 100 A enclosed rotary isolator.
- Four-pole switching for three-phase plus neutral circuits.
- IP65 enclosure for demanding indoor and outdoor environments.
- Lockable rotary handle supports safe maintenance procedures.
- Interlocked enclosure lid helps prevent access in the ON position.
- Suitable for motors rated up to 37 kW at 415 V AC.
Key Features
- IMO IS4P enclosed rotary isolator series.
- 100 A AC-21 rated operational current.
- Four-pole configuration.
- Rated for operation from 230 to 440 V AC.
- 690 V rated insulation voltage.
- Lockable manual rotary operating handle.
- IP65 flame-retardant polycarbonate enclosure.
- Compliant with IEC EN 60947-3 and RoHS requirements.
Reliable Isolation for Higher-Current Equipment
The IMO IS4P100 provides a clearly defined means of disconnecting higher-current electrical equipment before inspection, maintenance or repair work begins. Its four-pole switching mechanism disconnects all three phases and the neutral conductor through one manual operation, helping provide complete circuit isolation where required.
The lockable handle and interlocked enclosure lid support controlled maintenance procedures, while the IP65 housing helps protect the isolator in dusty or wet environments. An optional IMO SAC150-11 auxiliary contact may also be fitted where remote status indication or control-circuit signalling is required.
Typical Applications
- High-current industrial machinery.
- Three-phase motor isolation.
- HVAC and air-handling equipment.
- Pump and ventilation systems.
- Commercial electrical distribution equipment.
- Manufacturing and processing installations.
- Renewable energy and solar AC isolation systems.
Technical Specifications
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| Mounting Type | Enclosed / surface | |
|---|---|---|
| Device Type | Enclosed DC isolator | |
| Supply Type | AC | |
| Current | 100 A | |
| Voltage | 440 V | |
| Phase | Three Phase | |
| Poles | 4-pole | |
| Manufacturer | IMO Precision Controls | |
| Series | IS4P Enclosed Rotary Isolators | |
| Model | IS4P100 | |
| Product type | Enclosed rotary isolator switch | |
| Rated operational current (AC-21) | 100 A | |
| Rated operating voltage | 230–440 V AC | |
| Rated voltage | 415 V AC | |
| Rated insulation voltage | 690 V | |
| Number of poles | 4 | |
| Rated three-phase motor power at 415 V (AC-23A) | 37 kW | |
| Frequency | 50 / 60 Hz | |
| Protection rating | IP65 enclosure / IP20 switch body | |
| Enclosure material | Polycarbonate | |
| Maximum cable size | 35 mm² solid or stranded | |
| Tightening torque | 3 Nm | |
| Mechanical life | 10,000 operations | |
| Mounting type | Surface mounting | |
| Dimensions (H × W × D) | 240 × 160 × 120 mm | |
| Depth including handle | 165 mm | |
| Cable-entry knockouts | M20 / M25 / M32 | |
| Weight | Approx. 1.34 kg | |
| Compliance | IEC EN 60947-3 and RoHS | |
| Approvals | CE and SEMKO |
Frequently Asked Questions
What is the IMO IS4P100 used for?
The IMO IS4P100 is used to provide safe local isolation for higher-current three-phase machinery, motors, HVAC equipment and electrical distribution systems.
What is the current rating of the IS4P100?
The isolator has a rated operational current of 100 A under the AC-21 utilisation category.
What motor size can the IS4P100 control?
It is rated for a three-phase motor power of up to 37 kW at 415 V AC under the AC-23A utilisation category.
Is the IMO IS4P100 suitable for outdoor installation?
Yes. Its enclosure has an IP65 protection rating, providing protection against dust and water jets when correctly installed.
Can the rotary handle be locked?
Yes. The rotary operating handle can be locked to help prevent unauthorised operation or accidental reconnection during maintenance.
Can an auxiliary contact be fitted?
Yes. The compatible IMO SAC150-11 auxiliary contact provides one normally open and one normally closed contact for signalling or control applications.
Trusted by Electrical Professionals
IMO enclosed rotary isolators are specified by electrical contractors, machine builders and industrial engineers for dependable isolation, robust environmental protection and reliable operation in demanding electrical installations.
