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2CSM222000R1500 ABB ISL-A 115 Insulation Monitor
ABB ISL-A 115 is a DIN-rail industrial insulation monitor for 100–144 V DC unearthed IT networks with adjustable alarm and trip thresholds and Fail Safe functionality.
£987.03
Why Choose the ABB ISL-A 115 Insulation Monitor?
The ABB ISL-A 115 is an industrial insulation monitoring device for unearthed IT DC networks, designed to continuously supervise insulation resistance between the electrical system and earth. As part of ABB’s Earth Monitoring Devices range, it helps identify developing insulation faults so corrective action can be taken while supporting continuity of service.
Designed specifically for 100–144 V DC networks, the ISL-A 115 continuously measures insulation conditions and provides configurable alarm and trip functions. This makes it particularly suitable for installations where an initial insulation fault needs to be detected and signalled without immediately interrupting the electrical supply.
The ISL-A 115 combines adjustable insulation thresholds, visual status indication, relay outputs and Fail Safe functionality in a six-module DIN-rail enclosure. Its dedicated DC-network design makes it a practical solution for industrial control, emergency power and other unearthed DC systems requiring continuous insulation supervision.
Key Advantages
- Continuous insulation monitoring for unearthed IT DC networks.
- Designed for 100–144 V DC monitored networks.
- Adjustable alarm and trip thresholds enable monitoring to be configured for the installation.
- Fail Safe functionality supports dependable fault signalling.
- Visual ON, TRIP and ALARM indication provides clear operating status.
- Compact six-module DIN-rail design simplifies integration into industrial electrical panels.
Key Features
- ABB ISL-A industrial insulation monitoring series.
- Designed for DC IT networks.
- 100–144 V DC monitored line voltage.
- 30–300 kΩ adjustable alarm threshold.
- 10–100 kΩ adjustable trip threshold.
- Maximum trip delay of 2 s.
- Maximum measuring current of 1.8 mA.
- ON, TRIP and ALARM LED indication.
- Fail Safe function.
- Reset function for monitored fault conditions.
- Relay contacts rated up to 250 V, 5 A.
- Six-module DIN-rail mounting.
- Complies with EN 61010-1, EN 61557-8 and EN 61326-1.
Continuous Insulation Monitoring for DC IT Networks
The ABB ISL-A 115 continuously supervises the insulation resistance between an unearthed DC network and earth. Unlike residual current protection used on conventionally earthed systems, an insulation monitoring device is intended to detect deterioration of insulation in an IT network and signal the condition so the fault can be investigated before a subsequent fault creates a more serious electrical hazard or interruption.
With a monitored network range of 100–144 V DC, adjustable alarm and trip thresholds and Fail Safe operation, the ISL-A 115 provides configurable supervision for industrial DC systems. Its alarm and relay outputs allow insulation deterioration to be indicated locally or incorporated into wider control and signalling systems, supporting preventative maintenance and continuity of operation.
Typical Applications
- Unearthed 100–144 V DC IT networks.
- Industrial DC distribution systems.
- Industrial control and automation panels.
- Emergency and safety-related electrical systems.
- Installations where continuity of supply is important.
- Electrical systems requiring continuous insulation resistance supervision.
Technical Specifications
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| Monitoring Function | Insulation | |
|---|---|---|
| Product group | Earth Monitoring Devices | |
| Series | ISL Industrial Insulation Monitoring Devices | |
| ABB order code | 2CSM222000R1500 | |
| Product type | Industrial insulation monitor | |
| Network type | Unearthed IT DC network | |
| Monitored line voltage | 100–144 V DC | |
| Alarm threshold | 30–300 kΩ adjustable | |
| Trip threshold | 10–100 kΩ adjustable | |
| Maximum trip delay | 2 s | |
| Maximum measuring current | 1.8 mA | |
| Fail Safe function | Yes | |
| Reset function | Yes | |
| Relay contact capacity | max. 250 V, 5 A | |
| Power consumption | 4 W | |
| Operating temperature | -10 to +60 °C | |
| Storage temperature | -20 to +70 °C | |
| Maximum relative humidity | ≤90% | |
| Maximum terminal conductor section | 2.5 mm² | |
| Mounting type | DIN rail | |
| Module width | 6 modules | |
| Dimensions (H × W × D) | approx. 105 × 90 × 58 mm | |
| Protection rating | IP40 front / IP20 enclosure | |
| Standards | EN 61010-1, EN 61557-8, EN 61326-1 | |
| EAN | 8012542942603 |
Frequently Asked Questions
What is the ABB ISL-A 115 used for?
The ABB ISL-A 115 is an industrial insulation monitor for unearthed IT DC networks. It continuously monitors insulation resistance to earth so deterioration and insulation faults can be detected and signalled.
What voltage range does the ABB ISL-A 115 monitor?
The ISL-A 115 is designed to monitor 100–144 V DC unearthed electrical networks.
What are the insulation thresholds on the ABB ISL-A 115?
The ISL-A 115 provides an adjustable 30–300 kΩ alarm threshold and an adjustable 10–100 kΩ trip threshold.
Does the ABB ISL-A 115 have a Fail Safe function?
Yes. The ISL-A 115 incorporates Fail Safe functionality as part of its insulation monitoring and signalling capabilities.
How is the ABB ISL-A 115 installed?
The ISL-A 115 is designed for DIN-rail mounting and occupies six modules, making it suitable for installation within industrial distribution boards, switchboards and control panels.
Trusted ABB Industrial Insulation Monitoring
ABB ISL industrial insulation monitors provide continuous supervision of unearthed electrical networks, with the ISL-A 115 combining 100–144 V DC monitoring, adjustable alarm and trip thresholds and Fail Safe functionality for dependable industrial insulation monitoring.
