ABB 1SVR730670R0200 CM-IWS.2S Insulation Monitoring Relay - UL 508
Part Number: 1SVR730670R0200
Quick Summary
CM-IWS.2S insulation monitoring relay protects unearthed IT AC systems up to 400 V by monitoring insulation resistance. Too often, undetected insulation faults trigger costly downtime and safety incidents. This device supports CE and UL/CSA certifications and IP50 housing protection, reducing audit risk. Coupled with DIN rail mounting and screw terminals, it streamlines installation and ongoing maintenance. With a measuring range of 1 to 100 kΩ and a 24–240 V supply, it adapts to diverse IT and industrial control panels. The device’s configurable thresholds and a compact form factor support scalable installations while improving fault visibility for engineers and maintenance teams.
Product Information
Extended Description
1SVR730670R0200 ABB: The CM-IWS.2S serves to monitor insulation resistance in accordance with IEC 61557-8 in unearthed IT AC systems with a voltage up to 400 V AC. The CM-IWS.2 can be configured to the requirements of the applications and therefore used multi-functional.
EAN
4016779852616
Minimum Order Quantity
1 piece
Customs Tariff Number
85364900
Data Sheet, Technical Information
Data sheet - CM-IWS.2x Insulation monitoring relay with screw or push-in terminals
Instructions and Manuals
Instruction Sheet / Manual - CM-IWS.1; CM-IWS.2 Insulation monitoring relays, with screw or push-in terminals
CAD Dimensional Drawing
Information - 2D and 3D files for CAD systems
Product Net Width
22.5 mm
Product Net Height
85.6 mm
Product Net Depth / Length
103.7 mm
Product Net Weight
0.141 kg
Function
Unearthed AC systems | Up to 400 V AC
Measuring Range
1 ... 100 kΩ
Rated Control Supply Voltage (Us)
24 ... 240 V AC/DC
Rated Frequency (f)
Measuring Circuit DC Hz | Measuring Circuit 15 ... 400 Hz | Supply Circuit 50/60 Hz
Output
1 c/o (SPDT) contact
Terminal Type
Screw Terminals
Rated Operational Current AC-12 (Ie)
(230 V) 4 A
Rated Operational Current AC-15 (Ie)
(230 V) 3 A
Rated Operational Current DC-12 (Ie)
(24 V) 4 A
Rated Operational Current DC-13 (Ie)
(24 V) 2 A
Minimum Switching Capacity
24 V | 10 mA
Rated Impulse Withstand Voltage (Uimp)
Measuring Circuit / Output Circuit 6 kV | Supply Circuit / Measuring Circuit 6 kV | Supply Circuit / Output Circuit 6 kV
Rated Insulation Voltage (Ui)
Measuring Circuit / Output Circuit 400 V | Supply Circuit / Measuring Circuit 400 V | Supply Circuit / Output Circuit 300 V
Degree of Protection
Housing IP50 | Terminals IP20
Overvoltage Category
III
Pollution Degree
3
Short-Circuit Protective Devices
Output Circuit NC - F Type Fuses 6 A | Output Circuit NO - F Type Fuses 10 A
System Leakage Capacitance (CE)
10 µF
Electrical Durability
AC-12 100000 cycle
Mechanical Durability
Nr. Operations 30000000 cycle
Connecting Capacity
Flexible with Ferrule 1x 0.5 ... 2.5 mm² | Flexible with Ferrule 2x 0.5 ... 1.5 mm² | Flexible with Insulated Ferrule 1x 0.5 ... 2.5 mm² | Flexible with Insulated Ferrule 2x 0.5 ... 1.5 mm² | Flexible 1x 0.5 ... 2.5 mm² | Flexible 2x 0.5 ... 1.5 mm² | Rigid 1x 0.5 ... 4 mm² | Rigid 2x 0.5 ... 2.5 mm²
Tightening Torque
0.6 ... 0.8 N·m
Wire Stripping Length
8 mm
Recommended Screw Driver
0.8 x 4
Mounting Position
1 ... 6
Mounting on DIN Rail
TH35-15 (35 x 15 mm Mounting Rail) acc. to IEC 60715 | TH35-7.5 (35 x 7.5 mm Mounting Rail) acc. to IEC 60715
Standards
CAN/CSA C22.2 No.14 | IEC/EN 63000 | IEC/EN 61326-2-4 | IEC/EN 61557-1 | IEC/EN 61557-8 | UL 508
Maximum Operating Voltage UL/CSA
Output Circuit 300 V AC
Contact Rating UL/CSA
B300
Connecting Capacity UL/CSA
Flexible 1x 18-14 AWG | Flexible 2x 18-16 AWG | Rigid 1x 20-12 AWG | Rigid 2x 20-14 AWG
Tightening Torque UL/CSA
7.08 in·lb
Pilot Duty UL/CSA
B300
Flammability According to UL94
V-0
Ambient Air Temperature
Operation -25 ... +60 °C | Storage -40 ... +85 °C
Maximum Operating Altitude Permissible
Without Derating 2000 m
Conflict Minerals Reporting Template (CMRT)
CMRT - Conflict Minerals Reporting Template
REACH Declaration
REACh Info for Electronic Relays and Controls
RoHS Information
RoHS Declaration of conformity for Electronic Relays and Controls
RoHS Status
Following EU Directive 2011/65/EU and Amendment 2015/863 July 22, 2019
SCIP
6e90abea-2bca-476c-a55d-3d52e72f31a6 Germany (DE)
Simplified SCIP
35d73baf-40ae-4b6a-8b1f-ef8f2e6807b0 Greece (GR) | 9e8c6f95-aedc-4147-b5f5-11568ad9766e Netherlands (NL) | 251f6b68-f3be-4f19-8c57-6b8689d50802 Belgium (BE) | 15a54f8f-aa2a-4e21-857d-a8b620c2a974 Finland (FI) | 30dad67f-5720-4e0e-81c0-7effee1fa5e0 Bulgaria (BG) | 64f61e39-04c4-47a9-a400-3ba58bdcb7a5 Germany (DE) | 36eddad8-1a07-4cf7-85f1-34a434906bfd Portugal (PT) | 31c251e1-5237-43ea-820c-cb6572ceddc4 Spain (ES) | ae86fa21-4cd2-4dba-b337-712a46a7b734 France (FR) | 1164c863-15c6-4e4b-931b-b31ed67787ab Belgium (BE) | 3b766046-0b62-4bb3-8b2d-2c174e3fe7b2 Hungary (HU) | e95f9509-f56b-4ef6-9f49-59a1fe22a71b Sweden (SE) | 99e7a826-3e70-4876-908a-7fd56eb0f6ad France (FR) | 52e6bad6-78a7-4754-bfef-083ddbb89ab3 Croatia (HR) | c996b1b9-c822-4cf4-800e-5d67d2e8dc7d Norway (NO) | acefd990-e6c0-4022-8039-9fe7d4795584 Poland (PL) | 49dc457e-4602-43bd-91bc-4b30e6ce0202 Sweden (SE) | 87755443-0708-4efd-940b-297761be4e85 Estonia (EE) | 182bf675-3962-424f-aa2c-509d4295cbb9 Poland (PL) | 21e8c70b-6b3a-4d10-b0dc-62b007c22962 Czech Republic (CZ) | f9f6b51b-e869-4eed-a0ea-e5ee215555df Germany (DE) | 1018b2cc-e3a8-427b-b24f-8647736714f9 Germany (DE) | c48b2993-b130-4447-98a9-8eccbcb6c479 Hungary (HU) | 3af7b15c-2998-48df-bc98-8a19e2a6fe96 Poland (PL) | a18ae28c-852c-4810-a4f9-ebc8cbbe6425 Denmark (DK) | 9693673f-8f61-4785-815a-11baece1d375 Italy (IT) | 56284c03-90ae-42c9-99ea-b184886d081d Germany (DE)
Toxic Substances Control Act - TSCA
Toxic Substances Control Act (TSCA) declaration for Electronic Relays and Controls
CB Certificate
CB_DK-30302-A1-UL
CCC Certificate
CCC Certificate - Insulation monitoring relays CM-IWS.x, CM-IWN.x, and coupling unit CM-IVN, old and new housing
CQC Certificate
CQC Certificate, Insulation Monitoring Relays, CM-IWS.xx, CM-IWN.xx, CM-IVN.x, Made in Germany
cULus Certificate
cULus508_20120727-E140448
Declaration of Conformity - CCC
CCC Declaration of Conformity, Insulation Monitoring Relays, CM-IWS.xx, CM-IWN.xx, CM-IVN.x, Made in Germany
Declaration of Conformity - CE
EU Declaration of Conformity - CM-IWS.xx, CM-IWN.xx, CM-IVN.x Insulation monitoring relay
Declaration of Conformity - UKCA
UK Declaration of Conformity - CM-IWS.xx, CM-IWN.xx, CM-IVN.x Insulation monitoring relay
DNV GL Certificate
DNV GL Certificate - CM-IWS.1, CM-IWS.2, CM-IWN.1, CM-IVN insulation monitoring relays
Package Level 1 Units
box 1 piece
Package Level 1 Width
97 mm
Package Level 1 Depth / Length
30 mm
Package Level 1 Height
109 mm
Package Level 1 Gross Weight
0.166 kg
Package Level 1 EAN
4016779852616
Object Classification Code
B
ETIM 7
EC001444 - Insulation and earth fault monitoring relay
ETIM 8
EC001444 - Insulation and earth fault monitoring relay
ETIM 9
EC001444 - Insulation and earth fault monitoring relay
eClass
V11.0 : 27371807
UNSPSC
39122331
E-Number (Finland)
2712262
E-Number (Norway)
4187800
E-Number (Sweden)
3860656
The CM-IWS.2S delivers insulation resistance monitoring up to 400 V IT systems, enabling continuous fault detection before faults escalate into outages. This translates to measurable business impact: reduced downtime, safer operation, and easier regulatory compliance in sensitive environments such as data centers and critical manufacturing lines. The 1 to 100 kΩ measuring range combined with a 24 to 240 V AC/DC supply ensures compatibility across mixed supply architectures, minimizing wiring errors and stock variety. Its SPDT output provides flexible control logic for interlocking and alarm signaling, while the minimum switching capacity of 24 V at 10 mA supports signaling without excessive load on the downstream circuitry. Installation is simplified by screw terminals and DIN rail mounting options (TH35-15 or TH35-7.5), saving panel space and accelerating commissioning. Engineered for durability, the unit withstands high cycle counts—AC-12 rated up to 100,000 cycles and mechanical operations up to 30,000,000—reducing maintenance frequency and total cost of ownership. Housing IP50 and a compact footprint (22.5 mm width) fit tight control panels, while robust standards conformance (CE, UL/CSA, UL 508) eases audits and global deployments.
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FAQs
CM-IWS.2S mounts on TH35 DIN rails (TH35-15 or TH35-7.5). Wire the supply on the screw terminals using 0.5–2.5 mm² conductors, ensuring correct polarity for DC or AC inputs. Secure the device to the rail with a click, then tighten terminals to the recommended torque of 0.6–0.8 N·m. Use the SPDT output to drive alarms or interlocks, and verify insulation monitoring wiring per IEC 61557-8 guidelines. This minimizes commissioning time and reduces wiring errors while supporting scalable panel designs.
Key specs include measuring range 1–100 kΩ, rated control supply 24–240 V AC/DC, output SPDT contact, and insulation/impulse withstand ratings up to 6 kV. The housing provides IP50 protection, while the unit supports operation in environments up to 60°C and elevations up to 2000 m without derating. These specs ensure reliable monitoring in IT and industrial control panels while meeting CE and UL/CSA standards.
Yes. It is designed for unearthed IT AC systems and data center environments where insulation faults can cause downtime. The device operates up to 400 V AC, supports flexible 24–240 V supplies, and offers a compact DIN-rail mountable form factor. Its IP50 housing and CE/UL certifications help meet data center safety and reliability requirements, while the configurable thresholds reduce nuisance alarms in dense IT racks.
CM-IWS.2S carries CE, UL/CSA, and UKCA markings, and is designed to meet UL 508 and IEC/EN 61557-1 and 61557-8 requirements. This certification suite supports global deployments, simplifies audits, and reduces risk when integrating with other certified control devices. The IP50 housing and robust voltage and impulse withstand ratings further corroborate compliance for industrial environments.
The relay enables early insulation fault detection, reducing unplanned downtime and extending equipment life. Its compact DIN-rail footprint saves panel space, while screw terminals streamline wiring, cutting installation time. With high electrical and mechanical durability, maintenance frequency drops, translating to lower service costs and faster project timelines in electrical control systems and IT infrastructure.