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Products

ABB CM-MSS.21S Thermister Motor Protection Relay PTC TypeA 24-240VAC/DC 1NO+1NC 15-400Hz

Product Code: CM-MSS.21S

  • Continuous Operation
  • Reliable in harsh conditions
  • Easy Installation
  • Direct Temperature Monitoring
  • Motor protection using protective devices
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Specifications

Product Type Thermister Motor Protection Relay
Brand ABB
Connection Type Double-Chamber Cage Connection Terminals
Contact Configuration 1NO+1NC
Degree of Protection IP20, IP50
Degree Pollution IP3
Depth 30 mm
Function Dynamic Interrupted Wire Detection, Non-volatile Fault Storage, Short-Circuit Detection
Height 109 mm
LED Colour Green, Red, Yellow
Mounting Type DIN Rail
Number of LED 3
Operational Temperature -40 to 85 deg C
Rated Current 4 A
Rated Frequency 15-400 Hz
Rated Impulse Withstand Voltage 4 kV
Rated Voltage 24-240 VAC/VDC
Sensor Type PTC Type A
Standards and Approvals 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
Terminal Type Screw
Weight 0.126 kg
Width 97 mm

Description

The Thermistor Motor Protection Relay is designed to monitor PTC temperature sensors using one sensor circuit. It features short-circuit detection, dynamic interrupted wire detection, and non-volatile fault storage. The relay operates based on the closed-circuit principle and has three LEDs for visual indication. With a rated control supply voltage of 24-240 VAC/DC, this relay is capable of handling various power sources. It is equipped with 1 normally open (NO) and 1 normally closed (NC) output contact, both rated at 250 V/4 A. The relay also includes interrupted-wire monitoring functionality. In case of failure, the relay will automatically reset once the issue has been resolved. Additionally, it features double-chamber cage connection terminals for secure and reliable connections.

Documents

  • IPD Product Catalogue

    IPD Product Catalogue V17
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