ABB 1SVR740712R1300 Thermistor Motor Protection Relay ATEX
Part Number: 1SVR740712R1300
Quick Summary
ABB 1SVR740712R1300 thermistor motor protection relay monitors motor temperature to prevent overload in drive systems. Sudden motor overheating leads to unplanned downtime and costly repairs, especially in automated lines. The device carries ATEX certification for explosive atmospheres, UL/CSA compliance for North America, and CE marking for Europe, ensuring safe operation across sites. With Easy Connect push-in terminals and DIN rail mounting, installation is faster and more reliable, while configurable fault storage helps you meet maintenance and compliance reporting. These capabilities translate into measurable business value, reducing rejects, improving first-pass yield, and simplifying audits. Designed for harsh factory environments, it supports 24-240 V supply and robust protection features that minimize nuisance tripping.
Product Information
Extended Description
1SVR740712R1300 ABB: The CM-MSS.51P belongs to the CM thermistor motor protection relay range. It operates with a rated control supply voltage of 24 - 240 V AC / DC and has a 2 c/o (SPDT) output with contacts rated at 250 V / 4 A. It features two sensor circuit to monitor PTC temperature sensors (single or accumulative evaluation, configurable) and works according to the closed-circuit principle. The sensor circuits of this CM-MSS.51P are short-circuit (configurable), as well as interrupted-wire monitored and 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. The non-volatile fault storage, the short circuit detection and the accumulative evaluation can be enabled/disabled via DIP switches. 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
4013614496554
Minimum Order Quantity
1 piece
Customs Tariff Number
85364900
Data Sheet, Technical Information
Data sheet - CM-MSS.51S/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
0.135 kg
Function
2 sensor circuits | Auto, manual or remote reset | ATEX approved | Dynamic interrupted wire detection | Short-circuit detection, configurable | Non-volatile fault storage, configurable | Single or accumulative evalutation, configurable
Rated Control Supply Voltage (Us)
24 ... 240 V AC/DC
Rated Operational Voltage
Auxiliary Circuit 250 V AC
Rated Frequency (f)
Supply Circuit 15 ... 400 Hz
Output
2 x 1 c/o or 1 x 2 c/o contacts, configurable
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 6 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
TH35-7.5 (35 x 7.5 mm Mounting Rail) acc. to IEC 60715 | TH35-15 (35 x 15 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
SCIP
72263a1c-d796-496d-8d10-370e90f82306 Germany (DE)
Simplified SCIP
78c346c0-6ab5-47e8-ad23-ff9a8ef9295b Germany (DE) | 7d158fa9-00c2-4c3b-a5eb-46dcebd0ac66 Germany (DE) | 65952ee6-e26a-4800-9e68-950c7a88473c Czech Republic (CZ) | 4fb79991-76c1-4303-93b7-41121b31afff Germany (DE) | 63899def-f0ae-4cd0-acc1-b848d3162b27 Croatia (HR) | 956e7d92-966c-4944-b5ab-0c241f823787 Italy (IT) | ff707719-9242-4ff4-8254-e3a724a6b70e Denmark (DK) | 3640cd49-5f7e-4763-ac66-ba7e76a029f0 Poland (PL) | 0e62ec43-2a90-4d3e-9dc6-e19b6a9bb5cb Belgium (BE) | 591f7088-3450-477b-8cd5-b48167ac2e7d Norway (NO) | 0ef29f5f-dc0b-41f9-938c-8a5a8f0eed29 Finland (FI) | a3ffd1cc-0cb5-47e0-aa99-7b40d21a798d Belgium (BE) | b6e21481-e39a-4e0a-9561-4ea0d23d3a7b Hungary (HU) | 0ef23a88-7944-4458-81d9-e499510be4c1 Spain (ES) | be39a70e-f7c5-4cdc-baf9-aa6152f6ceef Poland (PL) | 6927fefc-f417-4d39-899a-10db44679463 France (FR) | d5a4dc3f-6467-4212-9255-ed9c2849a12f Bulgaria (BG) | 4f11596c-5b7d-41b1-8651-71d2b8e6a1b6 Portugal (PT) | 765db79d-4f4e-40fd-9d92-586ccd31a968 Germany (DE) | 08e051d6-5175-4a0e-be9a-d045fc2ec01b Sweden (SE) | 7a23abcc-b1cf-44b6-b12f-00f6c3a43e8f Sweden (SE) | 20319828-6e31-4e4d-b6d9-77c7c8faad9b France (FR) | 8e38caf8-f7ec-4dd4-a366-41b4f6df4fdf Hungary (HU) | 26f96139-7e51-4548-9533-83b1d48730a7 Greece (GR) | 4d1c971b-322c-4a16-946b-cd25d34ab9d8 Estonia (EE) | 42dc2418-1e22-49b1-93e2-1ef9eeb0a7da Poland (PL) | 2dad3e6f-80cb-49c7-8d4b-37f8f6e1b683 Netherlands (NL)
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
0.161 kg
Package Level 1 EAN
4013614496554
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)
2712513
E-Number (Norway)
4188169
E-Number (Sweden)
3860739
Feature → Business Impact → Application: The CM-MSS.51P supports a 24 - 240 V AC/DC control supply and two SPDT outputs, enabling precise motor protection without overcomplicating control wiring. This reduces unexpected tripping and extends motor life in conveyors and packaging lines. Application: Use in small to mid-size drive systems where reliable temperature monitoring is critical and where DIN rail mounting streamlines panel design. Feature → Business Impact → Application: Dual PTC sensor circuits with single or accumulative evaluation, configurable via DIP switches, provide flexible fault grading and traceability. This improves maintenance planning and reduces mean time to repair in HVAC and process automation. Feature → Business Impact → Application: Auto, manual or remote reset options plus non-volatile fault storage ensure quick recovery from fault events and robust audit trails, aiding compliance in regulated industries. Feature → Business Impact → Application: ATEX, CE, UL/CSA certifications and IP50 housing give confidence for hazardous area installations and multinational projects, reducing risk and accelerating deployment in North America and Europe. Feature → Business Impact → Application: Easy Connect push-in terminals and screwless design speed installation and reduce commissioning time, while 2 x SPDT outputs support flexible interlocking with other safety and drive control devices. Feature → Business Impact → Application: Durable construction (AC-12/AC-15 and DC-12/DC-13 ratings) supports reliable operation under peak motor loads, minimizing downtime and lowering total cost of ownership over the motor’s life.
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FAQs
The CM-MSS.51P is designed for DIN rail mounting on TH35-7.5 or TH35-15 rails with screwless terminals and Easy Connect push-in terminals for fast wiring. Connect two SPDT outputs and two PTC sensor circuits using flexible 0.5-1.5 mm2 conductors. It operates from 24-240 V AC/DC, and can be wired for auto, manual or remote reset to suit your control architecture.
It features two PTC sensor circuits with configurable single or accumulative evaluation and short-circuit/interrupt-wired monitoring. The device supports auto, manual, or remote reset, with non-volatile fault storage to preserve fault history. This enables precise protection decisions and easier diagnostics during maintenance or audits.
Yes. The CM-MSS.51P is ATEX certified for explosive atmospheres and CE/UL/CSA compliant, making it suitable for hazardous area installations and multinational manufacturing environments. Its IP50 housing and DIN rail mounting simplify integration into conveyor control panels while maintaining reliable motor protection.
Certifications include ATEX EU DoC, CE DoC, UKCA, UL/CSA, CB, CCC, and DNV GL, plus RoHS/REACH declarations. These approvals support regulatory compliance, supplier audits, and market access in Europe, North America and beyond, reducing validation time and aiding risk assessments during procurement and commissioning.
Maintenance is largely maintenance-free thanks to non-volatile fault storage and a high mechanical durability rating. Protection reduces motor damage and nuisance trips, lowering downtime and repair costs. The device’s fast installation and clear fault reporting also shorten project timelines, delivering a favorable return on investment through improved uptime and predictable maintenance.