ABB Monitoring Relay, SPDT Contact Configuration, DIN Rail Mount, 24 V DC and AC Supply, CM-MSS 1SVR740712R1400 CM-MSS.31P

ABB 1SVR740712R1400 CM-MSS.31P is a robust monitoring relay designed for temperature-based protection of motors equipped with PTC sensors, supporting applications in industrial automation and electrical control systems.

This monitoring relay uses SPDT (Single Pole Double Throw) contacts with a DIN rail mount for quick and secure installation in control panels. It supports a wide supply voltage range from 24 V DC to 240 V AC, allowing it to operate efficiently in diverse electrical environments.

The CM-MSS series motor protection relays monitor motor winding temperatures via PTC sensors, which are incorporated into motor windings. This enables control systems to evaluate critical operating conditions such as overload, wire breaks, unbalance, insufficient cooling, and high ambient temperatures up to 60°C.

Key features include dynamic interrupted wire detection, short circuit protection of sensor wiring, non-volatile fault memory, and the option for remote resets. Terminal connection options include traditional screw and Easy Connect push-in technology to suit installation preferences.

The relay's IP20 and IP50 ingress protection ratings make it suitable for various industrial environments, ensuring moderate protection from dust and moisture. The compact dimensions (103.7 mm length and 85.6 mm height) make it ideal for space-constrained DIN rail installations.

This monitoring relay finds applications across industrial, manufacturing, HVAC, and electrical automation sectors where precise motor temperature supervision is critical for safeguarding equipment and maintaining operational reliability.

Operates with supply voltages from 24 V DC to 240 V AC for flexible power use. Designed for controlling motors equipped with PTC temperature sensors to monitor motor heating. Features dynamic interrupted wire detection and short circuit monitoring of sensor circuits.

Includes non-volatile fault storage and remote reset functions for enhanced reliability. Available with screw connection or Easy Connect terminal technology for ease of installation. Compact dimensions with length of 103.7 mm and height of 85.6 mm for space-saving DIN rail mounting.

IP20 and IP50 ratings ensure moderate protection against environmental factors. Supports high ambient temperatures up to 60°C to maintain performance in demanding conditions. Meets motor protection needs by controlling and evaluating overload, unbalance, and cooling insufficiencies.

Explore our comprehensive collection of ABB Monitoring Relays and related automation components at EnvMart for reliable motor protection solutions.