Specifications

Product Type

Three-phase monitoring relay

Brand

ABB

Series

CM-MPS

Function Phase sequence, phase failure, overvoltage, undervoltage, phase unbalance and interrupted neutral monitoring; phase sequence monitoring switchable; single-phase monitoring supported	Electrical Endurance 100000 cycle	Rated Control Supply Voltage (Us) 3 x 180 to 280 V AC
Rated Insulation Voltage (Ui) 600 V (input/output); 300 V (between output circuits)	Rated Operational Current AC-15 (Ie) 3 A	Measuring Range Overvoltage: 3 x 240 to 280 V AC; undervoltage: 3 x 180 to 220 V AC; phase unbalance: 2 to 25 % of average phase voltages
Rated Frequency 50/60 Hz	Terminal Type Screw terminals	Rated Operational Current AC-12 (Ie) 4 A
Rated Operational Current DC-12 (Ie) 4 A	Rated Operational Current DC-13 (Ie) 2 A	Time Range Start-up: 200 ms; tripping: 0 s or 0.1 to 30 s
Minimum Switching Capacity 24 V / 10 mA	Rated Operational Voltage (AC/DC) 250 V	Output 2 c/o (SPDT) contacts
Short-Circuit Protective Devices 6 A fast-acting (n/c contact); 10 A fast-acting (n/o contact)	Mechanical Durability 30000000 cycle

Conductor Cross Section Flexible

1 x 0.5 to 2.5 mm²; 2 x 0.5 to 1.5 mm²

Conductor Cross Section Solid Core

1 x 0.5 to 4 mm²; 2 x 0.5 to 2.5 mm²

Housing Material

UL 94 V-0

Depth 103.7 mm	Height 85.6 mm	Weight 0.146 kg
Width 22.5 mm

Storage Temperature

-40 to 85 °C

Operating Temperature

-25 to 60 °C

IP Rating

IP50 (housing); IP20 (terminals)

Standards and Approvals

IEC/EN 60947-5-1; IEC/EN 60255-27; EN 50178; EN 50155; IEC 60571; IEC/EN 61373; EN 45545-2; cULus E140448; CCC; DNV GL; CE; UKCA; RCM; CMIM

ABB CM-MPS.21S Three-Phase Monitoring Relay 3 180-280VAC (L-N) 180-280VAC 2CO SPDT 4A