ABB Phase Monitor Rail 3P+N 3X180-280V CM-MPS.21S 44456. Monitors all phase parameters such as overvoltage, undervoltage, imbalance, and phase failure as well as intermittent neutral.

Operates with a control supply voltage / three-phase measuring voltage of 180-280 V AC 50/60 Hz and has a 2 c/o (SPDT) output with contacts rated at 250V/4A.

• Measuring range: 180 ... 280 V AC
• Time range: 0 s or 0.1 ... 30 s delay activation (ON or OFF) / 200 ms start-up delay
• Rated operational current AC-12 (I e): (230 V) 4 A
• Rated insulation voltage (U i): Input circuit / Output circuit 600 V - Output circuit 1 / Output circuit 2: 300 V
• Number and type of contacts: 2 C/O
• Rated impulse withstand voltage (U imp): Input circuit 6 kV / Output circuit 4 kV
• Protection degree: IP20
• Operating temperature: -25 ... +60 °C
• Dimensions: Width: 22.5mm, Height: 85.6mm, Length: 103.7mm