Product Introduction ABB CM-IWS.1S Brand：ABB Item No.：CM-IWS.1S Product Type：Insulation Monitoring Relay Product Origin：Sweden Dimensions：22.5 × 85.6 × 103.7 mm Weight：0.148 kg Payment：
| Release time | Jun 02, 2026 |
| Manufacturer | ABB PLC |
| Model | CM-IWS.1S |
| Part Number | IN44557 |
| Condition | 100% New |
| Shipping Port | Xiamen, China |
| Lead Time | 1-3 Working Days |
| Certificate | COO |
| Courier partners | DHL, UPS, TNT, FedEx and EMS. |
| Warranty | 1 Years |
Product Introduction
ABB CM-IWS.1S
Brand：ABB
Item No.：CM-IWS.1S
Product Type：Insulation Monitoring Relay
Product Origin：Sweden
Dimensions：22.5 × 85.6 × 103.7 mm
Weight：0.148 kg
Payment：T/T, Western Union, Credit Card
Shipping Port：Xiamen, China
Lead Time：1-3 Days
Condition：Brand New And Original
Warranty：1 Year
Q1. What is the main function of the CM-IWS.1S relay?
It monitors insulation resistance in unearthed electrical systems and provides an alarm when insulation falls below the set threshold.
Q2. What types of electrical systems can it monitor?
The relay is suitable for unearthed AC systems, DC systems, and mixed AC/DC networks.
Q3. What supply voltage does the relay require?
It operates with a wide control supply range of 24 to 240 V AC or DC.
Q4. What is the insulation monitoring range?
The device monitors insulation resistance within a range of 1 kΩ to 100 kΩ.
Q5. How is the relay installed in a control panel?
It is designed for snap-on installation on a standard 35 mm DIN rail.
Q6. What type of output contact does the device provide?
The relay includes one changeover (SPDT) contact for alarm or control signaling.
Q7. What visual indicators are available on the relay?
LED indicators show power supply status, relay state, and insulation fault conditions.
Q8. In what applications is the CM-IWS.1S commonly used?
It is widely used in industrial control panels, medical IT systems, UPS installations, and other equipment where insulation monitoring is critical.
The product source is clear and reliable, supports third-party testing, and has complete after-sales support
Large stock, diverse series, adapted to different working conditions, welcome to consult!
Company Information
E-mail: [email protected]
Mobile：Please contact by email
Whatsapp：Please contact by email
Add: Alishan Building, 2 Lvling Rd, Siming District, Xiamen, Fujian, China, 361006
Our services
We are specialized in providing industrial automation parts with a one-year warranty. Our industrial automation parts are sold all over the world
We can provide equipment and spare parts from different countries and manufacturers, solve your worries or quality problems in many places, and have a great price advantage.
Welcome to call for more product details.
The product has high delivery efficiency, clear cost structure, and supports bargaining when the quantity demand is large.
"We've been using the PM564-T in our manufacturing plant for 6 months. Reliable, fast, and easy to program. Great communication capabilities."
"Solid PLC with all the features we need. Documentation could be better, but overall a good product."
