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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 1SVR730712R1400 |
| Manufacturer | ABB |
| Rated Control Supply Voltage | 24 to 240 V AC/DC |
| Rated Frequency | 15 to 400 Hz |
| Number of Sensor Circuits | 1 |
| Sensor Type | PTC type A (DIN/EN 44081, DIN/EN 44082) |
| Overtemperature Monitoring | Switch-off resistance (relays de-energize) 2.83 kΩ; Switch-on resistance (relays energize) 1.1 kΩ |
| Short-circuit Detection | Yes |
| Interrupted Wire Detection | Yes |
| Non-volatile Fault Storage | Yes |
| Test Function | Yes |
| Control Functions | Manual reset, auto reset, remote reset (adjustable) |
| Output Contacts | 1 normally open (n/o) contact, 1 normally closed (n/c) contact |
| Contact Material | AgNi alloy, Cd free |
| Minimum Switching Voltage/Current | 24 V / 10 mA |
| Rated Operational Voltage/Current | AC-12 (resistive) at 230 V: 4 A; AC-15 (inductive) at 230 V: 3 A; DC-12 (resistive) at 24 V: 4 A; DC-13 (inductive) at 24 V: 2 A |
| Mechanical Lifetime | 30 x 10^6 switching cycles |
| Electrical Lifetime | At AC-12, 230 V AC, 4 A: 0.1 x 10^6 switching cycles |
| Mounting | DIN rail (IEC/EN 60715), snap-on mounting without any tool |
| Housing Material | UL 94 V-0 |
| Degree of Protection | Housing: IP50; Terminals: IP20 |
| Ambient Temperature Range | Operation: -25 °C to +60 °C; Storage: -40 °C to +85 °C |
| Standards/Directives | IEC/EN 60947-5-1, IEC/EN 60947-8, Low Voltage Directive 2014/35/EU, EMC Directive 2014/30/EU, ATEX Directive 2014/34/EU, RoHS Directive 2011/65/EU |
| Connection Technology | Screw connection technology or Easy Connect Technology available |
The ABB Motor Protection Relay, part number 1SVR730712R1400, is a sophisticated device engineered to safeguard motors from potential hazards such as overheating, overload, and insufficient cooling. This relay is adept at monitoring the winding temperature of motors, ensuring they operate within safe thermal limits. It is equipped with a single measuring circuit and features a user-friendly Test/Reset button, allowing for easy testing and resetting of the system.
Configurable for auto, manual, or remote reset, the relay provides flexibility in system design and response to faults. It includes short-circuit monitoring of the sensor circuit and dynamic interrupted wire detection, enhancing the protection capabilities of the unit. The non-volatile fault storage ensures that in the event of a power interruption, the relay will remember its last state, contributing to a seamless operational experience.
The relay's status and fault indications are conveniently displayed through LEDs, making it simple to diagnose issues and maintain system performance. The supply and measuring inputs are overvoltage protected, adding an extra layer of security against electrical anomalies.
Designed with the highest fire protection classification in mind, the housing material is rated UL 94 V-0, providing peace of mind regarding fire safety. The relay's 22.5 mm width allows for efficient use of space on a DIN rail, which can be mounted and demounted without tools, facilitating easy installation and maintenance.
This ABB Motor Protection Relay is a reliable and essential component for motor control applications, offering protection and monitoring to extend the lifespan of your motor investments.
Commonly Asked Questions
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Frequently Asked Questions
What is the function of the CM-MSS.31 motor protection relay?
The CM-MSS.31 motor protection relay is designed to monitor the winding temperature of motors, offering protection against overheating, overload, and insufficient cooling. It utilises PTC resistor sensors to measure the motor's temperature and triggers a response if abnormal temperatures are detected.
Can the CM-MSS.31 relay detect both wire short-circuits and interruptions?
Yes, the CM-MSS.31 relay features dynamic interrupted wire detection and short-circuit monitoring of the sensor circuit, which allows it to detect and respond to both conditions effectively.
How can I reset the CM-MSS.31 after a fault has occurred?
The CM-MSS.31 can be reset manually using the front-face Test/Reset button, remotely via a connected push button between terminals S1 and T2, or automatically if S1 and T2 are jumpered, depending on the configuration.
What type of terminals does the CM-MSS.31 offer for electrical connections?
The CM-MSS.31 is available with two types of terminal connections: screw connection technology with double-chamber cage connection terminals and the Easy Connect Technology with push-in terminals.
Is the CM-MSS.31 suitable for use in explosive atmospheres?
The CM-MSS.31 is suitable for use with explosion-protected motors, with the sensor line being conducted into the explosive atmosphere while the relay itself must be installed outside the potentially explosive atmospheres.
What are the LED indicators on the CM-MSS.31 used for?
The CM-MSS.31 is equipped with LED indicators that provide status information about the control supply voltage, the output relay status, and fault messages, helping to diagnose issues quickly.
What is the rated control supply voltage range for the CM-MSS.31?
The rated control supply voltage range for the CM-MSS.31 is 24-240 V AC/DC, making it versatile for use in various electrical environments.
How does the CM-MSS.31 ensure the safety of the motor it is protecting?
The CM-MSS.31 ensures motor safety by monitoring the motor's temperature through PTC sensors and reacting to overtemperature conditions by de-energizing the output relays, thus preventing potential damage due to overheating.
What is the width of the CM-MSS.31 housing and how is it mounted?
The CM-MSS.31 has a compact housing width of 22.5 mm (0.89 in) and can be easily mounted on a DIN rail without the need for tools, saving space and facilitating installation.
Does the CM-MSS.31 have any certifications or approvals?
Yes, the CM-MSS.31 has various certifications and approvals, ensuring compliance with international standards and suitability for a wide range of industrial applications.
Part conditions explained
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New unsealed: The product is in its original packaging, but the packaging has been opened or unsealed. It has never been used and should be in near pristine condition.
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New unboxed: The product does not come in its original packaging, but it has never been used and is in great working condition.
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