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ABB CM-MSS.31S | 3-Phase Monitoring Relay for System Protection
Overview
The ABB CM-MSS.31S is a multifunctional phase monitoring relay for three-phase systems. Designed to monitor phase sequence, loss, and asymmetry in networks ranging from 200 to 500 V AC, it provides reliable protection for motors and critical equipment.
Key Features
-
Rated Voltage Range: 200–500 V AC
-
Monitoring Functions: Phase sequence, phase loss, and asymmetry
-
Trip Delay Adjustment: 0.1–10 seconds
-
LED Indicators: Display operational and fault status
-
Compact Design: Saves space in control panels
-
DIN Rail Mounting: Fast and secure installation
-
Output Contact: 1 c/o (SPDT) relay output
-
Phase Failure Detection: Independent of load
-
Selectable Sensitivity: Fine-tuning for specific applications
Technical Specifications
-
Model: CM-MSS.31S
-
Supply Voltage: 3-phase, 200–500 V AC
-
Frequency: 50/60 Hz
-
Output Contact: 1 changeover (SPDT), 250 V AC / 6 A
-
Trip Delay: Adjustable from 0.1 to 10 s
-
Housing Width: 22.5 mm
-
Mounting Type: DIN rail (TH35)
-
Ambient Temperature: –20 °C to +60 °C
-
Protection Class: IP20 (terminals), IP40 (housing)
-
Standards: IEC/EN 60255-1, IEC/EN 60255-26, RoHS
-
Certifications: CE, cULus, EAC
Applications
-
Motor protection
-
Pump systems
-
HVAC equipment
-
Conveyor belts
-
Industrial control panels
Why Choose the ABB CM-MSS.31S?
-
Reliable Phase Monitoring: Prevents damage from incorrect phase conditions
-
Configurable Delay: Adjustable response for customized protection
-
Compact & Easy to Install: Space-saving DIN rail mount
-
Universal Voltage Range: Compatible with most global systems
-
ABB Assurance: Backed by a world leader in industrial automation
Order Now
Global delivery available.
Description
ABB CM-MSS.31S | 3-Phase Monitoring Relay for System Protection
Overview
The ABB CM-MSS.31S is a multifunctional phase monitoring relay for three-phase systems. Designed to monitor phase sequence, loss, and asymmetry in networks ranging from 200 to 500 V AC, it provides reliable protection for motors and critical equipment.
Key Features
-
Rated Voltage Range: 200–500 V AC
-
Monitoring Functions: Phase sequence, phase loss, and asymmetry
-
Trip Delay Adjustment: 0.1–10 seconds
-
LED Indicators: Display operational and fault status
-
Compact Design: Saves space in control panels
-
DIN Rail Mounting: Fast and secure installation
-
Output Contact: 1 c/o (SPDT) relay output
-
Phase Failure Detection: Independent of load
-
Selectable Sensitivity: Fine-tuning for specific applications
Technical Specifications
-
Model: CM-MSS.31S
-
Supply Voltage: 3-phase, 200–500 V AC
-
Frequency: 50/60 Hz
-
Output Contact: 1 changeover (SPDT), 250 V AC / 6 A
-
Trip Delay: Adjustable from 0.1 to 10 s
-
Housing Width: 22.5 mm
-
Mounting Type: DIN rail (TH35)
-
Ambient Temperature: –20 °C to +60 °C
-
Protection Class: IP20 (terminals), IP40 (housing)
-
Standards: IEC/EN 60255-1, IEC/EN 60255-26, RoHS
-
Certifications: CE, cULus, EAC
Applications
-
Motor protection
-
Pump systems
-
HVAC equipment
-
Conveyor belts
-
Industrial control panels
Why Choose the ABB CM-MSS.31S?
-
Reliable Phase Monitoring: Prevents damage from incorrect phase conditions
-
Configurable Delay: Adjustable response for customized protection
-
Compact & Easy to Install: Space-saving DIN rail mount
-
Universal Voltage Range: Compatible with most global systems
-
ABB Assurance: Backed by a world leader in industrial automation
Order Now
Global delivery available.