ABB 1SVR730720R1400 Thermistor motor relay - ATEX approved
Part Number: 1SVR730720R1400
Quick Summary
ABB 1SVR730720R1400 thermistor motor protection relay safeguards motors in harsh industrial environments. When sensor faults or interrupted wires occur, you need fast isolation and reliable reset to minimize downtime. It carries ATEX and CE certifications with UL/CSA listings, and a rugged IP50 housing ensures safe operation in hazardous zones. Easy DIN rail mounting and screw-terminal wiring help streamline panel design while delivering proven motor protection for long-term reliability.
Product Information
Extended Description
1SVR730720R1400 ABB: The CM-MSS.11S belongs to the CM-MSS thermistor motor protection relay range. It operates with a rated control supply voltage of 24 - 240 V AC / DC and has a 1 n/c + 1 n/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 the CM-MSS.11S is interrupted-wire monitored and the relay will be reset automatically after the failure has been removed. This protection relay is certified according to the ATEX directive 94/9/EC. A sealable transparent cover for protection against unauthorized changes is available as accessory. The device offers screw connection technology with double-chamber cage connection terminals.
EAN
4013614496639
Minimum Order Quantity
1 piece
Customs Tariff Number
85364900
Data Sheet, Technical Information
Data sheet - CM-MSS.11S/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
0.127 kg
Function
1 sensor circuit | Non-volatile fault storage | Dynamic interrupted wire detection | Auto reset | ATEX approved
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
1 n/o + 1 n/c 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)
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 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 | 4.5 | Pozidriv 1
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 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
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
0.154 kg
Package Level 1 EAN
4013614496639
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)
2712500
E-Number (Norway)
4187715
E-Number (Sweden)
3860712
Feature: Wide control supply range from 24 to 240 V AC/DC. Business impact: Simplifies panel design and reduces inventory of multiple coil voltages. Application: Ideal for motor protection in pumps, fans, conveyors, and machine tools across varied plant environments. Feature: 1 NO + 1 NC output. Business impact: Flexible control logic supports interlocks, fault signaling, and safe shutoff strategies without extra relays. Application: Suitable for start/stop interlocks and status feedback on motor circuits. Feature: PTC sensor monitoring with interrupted-wire detection and auto reset. Business impact: Minimizes nuisance trips and enables automatic recovery after fault removal, boosting line uptime. Application: Works with external thermistors in motor windings or stators. Feature: Interrupted-wire monitored sensor circuit. Business impact: Enhances safety by verifying sensor integrity continuously, reducing misdiagnosis and unplanned outages. Application: Critical in automation cells with multiple thermistor sensors. Feature: Certifications and installation compatibility. Business impact: Ensures compliance (ATEX, CE, UL/CSA) and supports quick DIN rail mounting with screw terminals for fast, reliable installation. Application: Suitable for hazardous and non-hazardous areas alike, streamlining compliance and maintenance.
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FAQs
The unit is designed for TH35-15 or TH35-7.5 DIN rails and uses screw terminals for wiring. Connect the control supply within 24–240 V AC/DC, then land the 1 NO + 1 NC outputs to the control circuit or interlock. Tighten terminals to 0.6–0.8 N·m and verify wire stripping length of about 8 mm for robust connections.
It supports a rated control supply voltage of 24 to 240 V AC/DC. The contact configuration is 1 normally open (NO) and 1 normally closed (NC), enabling simple start/stop interlocks and fault signaling in motor circuits, with a minimum switching capacity of 24 V at 10 mA.
Yes. It carries ATEX certification and CE declarations, along with UL/CSA listings, making it suitable for hazardous zones. The housing offers IP50 protection, and DIN-rail mounting plus rugged screw-terminals support safe, durable installation in industrial environments.
The relay includes a PTC sensor circuit with interrupted-wire monitoring and non-volatile fault storage. When a fault is detected, the device trips; once the fault is removed, the relay auto-resets, returning to normal operation and minimizing downtime without requiring manual intervention.
Yes, it supports a single PTC sensor circuit. Use 0.5–2.5 mm² conductors for flexible or rigid wiring per terminal specifications, and maintain the recommended torque (0.6–0.8 N·m). Ensure sensor integrity to avoid false trips, and route sensor leads to minimize EMI near power lines.