ABB CM-SFS.22S Current Monitoring Relay

ABB
Order Code:

28-3704

Brand: ABB MPN: CM-SFS.22S

Discontinued


The CM-SFS.2 is an electronic current monitoring relay that protects single-phase mains (DC or AC) from over- and undercurrent from 3mA to 15A.

All devices are available with two different terminal versions. You can choose between the proven screw connection technology (double-chamber cage connecting terminals) and the completely tool free Easy Connect Technology (push-in terminals).


  • Monitoring of DC and AC currents (3mA to 15A)
  • TRMS measuring principle
  • One device includes 3 measuring ranges
  • Over- and undercurrent monitoring
  • ON- or OFF-delay configurable
  • Open- or closed-circuit principle configurable
  • Latching function configurable
  • Threshold values for >I and <I adjustable
  • Fixed hysteresis (5%)
  • Start-up delay TS adjustable (0 s; 0.1-30s)
  • Tripping delay TV adjustable (0s; 0.1-30s)
  • Precise adjustment by front-face operating controls
  • Screw connection technology or Easy Connect Technology available
  • Housing material for highest fire protection classification UL 94V-0
  • Tool free mounting on DIN rail as well as demounting
  • 1x2 c/o (SPDT) contacts (common signal) or 2x1 c/o (SPDT) contact (separate signals for >I and <I) configurable
  • 22.5mm (0.89 in) width
Type Current monitoring relay
Contact Configuration SPDT
Dimensions 68 x 22 x 103mm
Operating Voltage (AC) 24 to 240V
Operating Voltage (DC) 24 to 240V
Output Current 0.3 to 15A
Temperature Range -20 to +60°C

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