Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
1SVR750669R9400 ABB CM-IVN.S Insulation Monitoring Coupling Unit
ABB CM-IVN.S 1SVR750669R9400 is a passive screw-terminal coupling unit for extending compatible CM-IWN insulation monitoring systems to network voltages up to 690 V AC and 1000 V DC.
£244.77
Why Choose the ABB CM-IVN.S Insulation Monitoring Coupling Unit?
The ABB CM-IVN.S, order code 1SVR750669R9400, is a coupling unit for insulation monitoring applications, designed to extend the voltage measuring range of ABB CM-IWN insulation monitoring relays. Used together with a compatible CM-IWN relay, it enables insulation resistance supervision in higher-voltage unearthed IT supply systems.
The CM-IVN.S extends the monitored network range up to 690 V AC and 1000 V DC. It is a passive device, so no separate control supply voltage is required, making integration into an insulation monitoring system straightforward.
This CM-IVN.S screw-terminal version uses robust double-chamber cage connection technology for secure industrial wiring. Its compact 45 mm-wide housing mounts on standard DIN rail and is designed for use with ABB CM-IWN insulation monitoring equipment in industrial power, machinery and automation installations.
Key Advantages
- Extends the measuring range of compatible ABB CM-IWN insulation monitoring relays.
- Enables monitoring of unearthed systems up to 690 V AC.
- Supports DC systems up to 1000 V DC.
- Passive coupling unit requires no separate control supply voltage.
- Suitable for insulation monitoring of higher-voltage industrial IT networks.
- Measuring-circuit frequency range of 15–400 Hz.
- Robust screw terminals with double-chamber cage connection technology.
- Compact 45 mm-wide DIN-rail housing.
- Designed for insulation monitoring applications in accordance with IEC/EN 61557-8.
Key Features
- ABB CM-IVN insulation monitoring coupling unit.
- CM-IVN.S screw-terminal version.
- Accessory for voltage range expansion of CM-IWN insulation monitoring relays.
- Monitored network voltage up to 690 V AC / 1000 V DC.
- No control supply voltage required.
- Measuring-circuit frequency range of 15–400 Hz.
- Screw terminal connection technology.
- Double-chamber cage connection terminals.
- IP50 housing protection.
- IP20 terminals.
- Tool-free DIN-rail mounting and removal.
- Operating ambient temperature range of -25 to +60 °C.
Extended Voltage Range for ABB Insulation Monitoring Systems
The ABB CM-IVN.S is used with compatible CM-IWN insulation monitoring relays when the voltage of the unearthed IT network exceeds the relay's direct measuring range. By coupling the monitored network to the insulation monitoring relay, the CM-IVN.S enables insulation resistance supervision at system voltages up to 690 V AC or 1000 V DC.
Because the CM-IVN.S is a passive coupling unit, it requires no dedicated control supply. Its screw-terminal connections, DIN-rail mounting and industrial temperature range make it well suited to higher-voltage insulation monitoring installations in machinery, manufacturing, process control and power distribution systems.
Typical Applications
- Voltage range expansion for ABB CM-IWN insulation monitoring relays.
- Unearthed industrial IT electrical systems.
- Insulation monitoring systems up to 690 V AC.
- Insulation monitoring systems up to 1000 V DC.
- Industrial machinery and automation systems.
- Process and manufacturing installations.
- Industrial power distribution systems.
- Electrical control panels and switchboards.
Technical Specifications
Tick the specs you need, then view products that match.
| Monitoring Function | Insulation | |
|---|---|---|
| Series | CM-IVN | |
| ABB order code | 1SVR750669R9400 | |
| Product group | 310921 – Measuring & Monitoring Relays | |
| Product type | Insulation monitoring coupling unit | |
| Function | Voltage range expansion for CM-IWN insulation monitoring relays | |
| Maximum monitored AC network voltage | 690 V AC | |
| Maximum monitored DC network voltage | 1000 V DC | |
| Rated control supply voltage | None – passive device | |
| Measuring-circuit frequency | 15–400 Hz | |
| Connection technology | Screw terminals | |
| Terminal design | Double-chamber cage connection | |
| Housing protection | IP50 | |
| Terminal protection | IP20 | |
| Operating temperature | -25 to +60 °C | |
| Storage temperature | -40 to +85 °C | |
| Mounting type | DIN rail | |
| Width | 45 mm | |
| Height | 85.6 mm | |
| Depth | 104.8 mm | |
| Net weight | 0.179 kg |
Frequently Asked Questions
What is the ABB CM-IVN.S 1SVR750669R9400 used for?
The CM-IVN.S is a coupling unit used to extend the voltage measuring range of compatible ABB CM-IWN insulation monitoring relays for higher-voltage unearthed IT systems.
What network voltages can the CM-IVN.S support?
The CM-IVN.S enables compatible insulation monitoring equipment to supervise networks up to 690 V AC and 1000 V DC.
Does the CM-IVN.S require a separate power supply?
No. The CM-IVN.S is a passive device and does not require a separate control supply voltage.
What type of terminals does the CM-IVN.S use?
Order code 1SVR750669R9400 is the CM-IVN.S version with screw terminals and double-chamber cage connection technology.
What is the difference between the CM-IVN.S and CM-IVN.P?
The main connection difference is the terminal technology: the CM-IVN.S uses screw terminals, while the CM-IVN.P version uses push-in terminals.
Trusted ABB Insulation Monitoring Technology
ABB CM insulation monitoring components provide dependable solutions for supervising insulation resistance in unearthed electrical systems, with the CM-IVN coupling unit extending compatible CM-IWN monitoring systems to higher AC and DC network voltages.
