ABB 1SVR740712R2200 CM-MSS Thermistor Relay - ATEX
Part Number: 1SVR740712R2200
Quick Summary
CM-MSS Thermistor motor protection relay guards motors against overheating in electrical drives and machinery. Hidden PTC sensor faults can trigger unplanned downtime, complicating maintenance planning and driving up costs. It carries ATEX certification and UL/CSA and CAN/CSA approvals, enabling safe deployment in hazardous areas and global installations. In industrial automation, Easy Connect technology with push-in terminals and a compact DIN-rail footprint speeds installation, while the device’s robust protection strategy minimizes outages and warranty issues. This combination supports scalable motor protection across multiple circuits, delivering predictable performance and reduced total cost of ownership.
Product Information
Extended Description
1SVR740712R2200 ABB: The CM-MSS.33P belongs to the CM-MSS thermistor motor protection relay range. It operates with a rated control supply voltage of 110-130 V AC and 220-240 V AC and has a 2 c/o (SPDT) output with contacts rated at 250 V / 4 A. It features one sensor circuit to monitor PTC temperature sensors and works according to the closed-circuit principle. The sensor circuit of this CM-MSS.33P is short-circuit, as well as interrupted-wire monitored and the relay can be reset automatically, manually or remotely after the failure has been removed. This protection relay is certified according to the ATEX directive 94/9/EC and is equipped with a reset / test button. A sealable transparent cover for protection against unauthorized changes is available as accessory. The device offers maintenance free Easy Connect Technology with push-in terminals.
EAN
4013614496530
Minimum Order Quantity
1 piece
Customs Tariff Number
85364900
Data Sheet, Technical Information
Data sheet - CM-MSS.32S/P and CM-MSS.33S/P with screw or push-in terminals
Instructions and Manuals
Instruction Sheet / Manual - CM-MSS Thermistor motor protection relays | Installation instructions - CM-MSS Thermistor motor protection relays
Ex Operating Instructions
Additional information and notes on safety ATEX - CM-MSS.xx Thermistor motor protection relay
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
0.162 kg
Function
1 sensor circuit | Short-circuit detection | Dynamic interrupted wire detection | Auto | manual or remote reset | ATEX approved
Rated Control Supply Voltage (Us)
110 ... 130 V AC | 220 ... 240 V AC
Rated Operational Voltage
Auxiliary Circuit 250 V AC
Rated Frequency (f)
Supply Circuit 50/60 Hz
Output
2 c/o (SPDT) contacts
Terminal Type
Screwless 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)
Output Circuit 1 / Output Circuit 2 4 kV | Output Circuit 4 kV
Rated Insulation Voltage (Ui)
Measuring Circuit / Output Circuit 300 V | Output Circuit 1 / Output Circuit 2 300 V | Supply Circuit / Measuring Circuit 300 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 10 A | Output Circuit NO - F Type Fuses 10 A
Electrical Durability
AC-12 100000 cycle
Mechanical Durability
Nr. Operations 30000000 cycle
Connecting Capacity
Flexible 2x 0.5 ... 1.5 mm² | Rigid 2x 0.5 ... 1.5 mm²
Wire Stripping Length
8 mm
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 | EN 50495 | IEC/EN 63000 | IEC/EN 60079-7 | IEC/EN 60947-5-1 | IEC/EN 60947-8 | UL 508
Maximum Operating Voltage UL/CSA
Output Circuit 300 V AC
Contact Rating UL/CSA
B300
Connecting Capacity UL/CSA
Flexible 2x 18-16 AWG | Rigid 2x 20-16 AWG
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
Toxic Substances Control Act - TSCA
Toxic Substances Control Act (TSCA) declaration for Electronic Relays and Controls
ATEX Certificate
EU Type Examination Certificate_TPS_18_ATEX_044254_0018_X
CB Certificate
CB_DK-40837-UL
CCC Certificate
CCC Certificate - Measuring and Monitoring Relays CM-PFS.x, CM-MSS.xxx, CM-MSS, CM-ENS, CM-ENS up/down
CQC Certificate
CQC Certificate, Measuring and Monitoring Relays, CM-PFS.x, CM-PFS, CM-MSS.xyz, CM-ENS, CM-ENS up/down, Made in Germany
cULus Certificate
cULus508_20140912-E140448
Declaration of Conformity - CCC
CCC Declaration of Conformity, Measuring and Monitoring Relays, CM-PFS.x, CM-PFS, CM-MSS.xyz, CM-ENS, CM-ENS up/down, Made in Germany
Declaration of Conformity - CE
EU Declaration of Conformity - CM-MSS.xxx thermistor motor protection relay with ATEX
Declaration of Conformity - UKCA
1SVD981007-10
DNV GL Certificate
DNV GL Certificate Thermistor motor protection 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
0.188 kg
Package Level 1 EAN
4013614496530
Object Classification Code
B
ETIM 7
EC002568 - Relay for thermistor protection (PTC)
ETIM 8
EC002568 - Relay for thermistor protection (PTC)
ETIM 9
EC002568 - Relay for thermistor protection (PTC)
eClass
V11.0 : 27371503
UNSPSC
39122331
E-Number (Finland)
2712509
E-Number (Norway)
4188183
E-Number (Sweden)
3860735
Feature → Business Impact → Application: The CM-MSS relay provides 2 c/o SPDT outputs rated for up to 250 V / 4 A, enabling clear fault signaling and straightforward wiring, which reduces install time and wiring errors in motor control circuits. This translates to improved system uptime and easier diagnostics in pump and fan drives within process automation. Feature → Business Impact → Application: Dual control supply voltage 110-130 V AC or 220-240 V AC supports global installations and simplifies panel design, minimizing the need for regional inventory and expediting international projects. Feature → Business Impact → Application: A dedicated PTC sensor circuit with auto/manual/remote reset accelerates fault isolation and recovery, lowering maintenance windows for conveyor and packaging lines. Feature → Business Impact → Application: ATEX certification and IP50 housing provide safe operation in hazardous environments, enabling use in mining, chemical, and steel applications without compromising compliance. Feature → Business Impact → Application: Easy Connect push-in terminals and DIN-rail mounting TH35 enable quick retrofits and scalable protection across machines, reducing project lead times and field labor costs. Feature → Business Impact → Application: Robust electrical durability (AC-12 life) and mechanical durability (30 million cycles) ensure long life in demanding automation settings, delivering lower replacement and warranty costs in continuous process lines.
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FAQs
The CM-MSS relay is designed for DIN rail mounting (TH35-15 or TH35-7.5) and features screwless push-in terminals for fast, error-free wiring. When wiring, ensure supply voltage matches the device variant (110-130 VAC or 220-240 VAC) and keep the sensor circuit access clear for PTC monitoring. This setup minimizes field labor and supports scalable protection across panels.
Key specs include two SPDT outputs with 250 V / 4 A contact rating, rated control supply voltages of 110-130 VAC or 220-240 VAC, and a rated operational current of 4 A AC-12 at 230 V (3 A AC-15). The device supports a measuring circuit insulation of 300 V and impulse withstand of 4 kV, suitable for demanding motor protection roles.
Yes. The CM-MSS thermistor motor protection relay carries ATEX certification (EU Type Examination TPS 18 ATEX 044254 0018 X) and is designed to operate safely in hazardous zones when properly installed, alongside UL/CSA and CAN/CSA approvals for broader compliance.
The relay features a sensor circuit that monitors PTC inputs with short-circuit and interrupted-wire protection and supports auto, manual, or remote reset after faults. Easy Connect technology with push-in terminals simplifies wiring, reduces maintenance time, and minimizes field-service costs in continuous operation environments.
Beyond motor protection, the device lowers maintenance downtime, accelerates installation with DIN-rail compatibility, and reduces wiring errors. Its ATEX/UL certifications enable compliant use across facilities, while high durability and reliable reset options translate to longer motor life and a lower total cost of ownership in industrial automation.