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2CSM333000R1500 ABB ISL-A 230 Insulation Monitor 220 V DC
ABB ISL-A 230 is a 6-module DIN-rail industrial insulation monitoring device designed for continuous insulation supervision of 220 V DC unearthed IT networks with adjustable alarm and trip thresholds.
£987.03
Why Choose the ABB ISL-A 230 Insulation Monitor?
The ABB ISL-A 230 is an industrial insulation monitoring device designed for continuous supervision of insulation resistance in unearthed IT DC networks. As part of the ABB ISL insulation monitoring series, it helps detect the first insulation fault to earth so maintenance teams can investigate deterioration while maintaining continuity of electrical service.
Designed for 220 V DC networks, the ISL-A 230 continuously monitors insulation resistance between the active conductors and earth. This makes it suitable for industrial DC distribution, control and auxiliary systems where early identification of insulation degradation is important for plant availability and electrical safety.
The ISL-A 230 is a 6-module DIN-rail device with front LED status indication, adjustable insulation thresholds and relay outputs for signalling and protection functions. ABB's ISL range is specifically intended for industrial IT networks, helping reduce downtime and maintenance costs through continuous insulation supervision.
Key Advantages
- Continuous insulation monitoring for unearthed IT DC networks.
- Designed specifically for 220 V DC monitored networks.
- Helps identify the first insulation fault to earth while supporting continuity of service.
- Adjustable insulation thresholds allow monitoring to be matched to installation requirements.
- Integrated trip and alarm relay outputs for signalling and protection functions.
- Front-panel LED status indication provides clear operating information.
- Fail-safe and reset functions support dependable monitoring.
- Compact 6-module DIN-rail construction for industrial control and distribution panels.
Key Features
- ABB ISL series industrial insulation monitor.
- 220 V DC monitored line voltage.
- Designed for unearthed IT DC networks.
- 30–300 kΩ alarm threshold with five selectable levels.
- 10–100 kΩ trip threshold with five selectable levels.
- 2 s maximum trip delay.
- 1.8 mA maximum measuring current.
- Integrated trip and alarm relay outputs.
- Relay contact capacity up to 250 V, 5 A.
- IP40 front and IP20 enclosure protection.
- -10 to +60 °C operating temperature.
- Compliant with EN 61010-1, EN 61557-8 and EN 61326-1.
Reliable Insulation Monitoring for DC IT Networks
Insulation monitoring devices continuously measure the resistance between an unearthed electrical network and earth. In an IT system, the first insulation fault does not necessarily require immediate interruption of the supply, so continuous monitoring provides an early warning that enables the fault to be located and corrected before a second fault creates a more serious condition.
The ABB ISL-A 230 provides this continuous supervision for 220 V DC IT networks. Its separate alarm and trip thresholds, relay outputs and status indications allow developing insulation problems to be identified and signalled, supporting preventative maintenance and helping minimise unplanned downtime in industrial installations.
Typical Applications
- Unearthed 220 V DC IT networks.
- Industrial DC distribution systems.
- Industrial control and automation installations.
- DC auxiliary power systems.
- Production plant electrical systems.
- Switchboards and control panels requiring continuous insulation supervision.
Technical Specifications
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| Monitoring Function | Insulation | |
|---|---|---|
| Series | ISL Insulation Monitoring Devices | |
| ABB order code | 2CSM333000R1500 | |
| Product type | Industrial insulation monitoring device | |
| Network type | Unearthed IT DC network | |
| Monitored line voltage | 220 V DC | |
| Alarm threshold | 30–300 kΩ, five selectable levels | |
| Trip threshold | 10–100 kΩ, five selectable levels | |
| Maximum trip delay | 2 s | |
| Maximum measuring current | 1.8 mA | |
| Trip relay outputs | 2 NO-C-NC | |
| Alarm relay outputs | 2 NO-C-NC | |
| Relay contact capacity | Maximum 250 V, 5 A | |
| Programmed functions | Alarm output, fail safe and reset | |
| Insulation test | 2.5 kV for 60 s | |
| Impulse withstand | 4 kV, 1.2/50 µs | |
| Operating temperature | -10 to +60 °C | |
| Storage temperature | -20 to +70 °C | |
| Relative humidity | ≤90% | |
| Maximum terminal cross-section | 2.5 mm² | |
| Protection rating | IP40 front, IP20 enclosure | |
| Mounting type | DIN rail | |
| Number of modules | 6 | |
| Standards | EN 61010-1, EN 61557-8, EN 61326-1 |
Frequently Asked Questions
What is the ABB ISL-A 230 used for?
The ABB ISL-A 230 is used to continuously monitor insulation resistance in unearthed IT DC networks, providing alarm and trip signalling when insulation deteriorates below configured thresholds.
What network voltage does the ABB ISL-A 230 monitor?
The ISL-A 230 is designed for 220 V DC IT networks.
What insulation thresholds are available on the ISL-A 230?
The device provides a 30–300 kΩ alarm threshold and a 10–100 kΩ trip threshold, each with selectable settings for adapting the monitor to the installation.
Does the ABB ISL-A 230 provide relay outputs?
Yes. The ISL-A 230 provides trip and alarm relay outputs with contacts rated up to 250 V, 5 A for integration with signalling and protection circuits.
Where is the ABB ISL-A 230 typically installed?
The ISL-A 230 is a 6-module DIN-rail device intended for installation in industrial electrical panels, switchboards and DC distribution systems using an unearthed IT network arrangement.
Trusted ABB Insulation Monitoring Technology
ABB ISL industrial insulation monitoring devices continuously supervise resistance to earth in IT networks, helping identify the first insulation fault, reduce plant downtime and support reliable operation of critical electrical systems.
