ABB – CBS-4C – 3-Module DIN-Rail, 4-Channel Type A Earth-Leakage Relay Station
The CBS‑C is a compact, DIN‑rail mountable earth-leakage relay station that combines four independent Type A leakage protection channels, each with adjustable sensitivity and delay, plus a pre-alarm output. Featuring RS‑ Modbus RTU, it allows centralized monitoring, configuration, and remote reset. Ideal for industrial or commercial switchpanels requiring multi-point protection.
Model: CBS‑C – programmable earth‑leakage relays + pre‑alarm; RS‑ Modbus RTU enabled
Channels: independent leakage trip relays + pre-alarm relay; each channel triggers breakers via external CTs (Circutor WGC/WGS)
Sensitivity: Adjustable from mA up to A, with high-frequency filtering and inverse-time curve compliance
Timing: User-configurable delays between . s and s (plus instantaneous option)
Display & Buttons: Backlit LCD (green normal, red on trip), status LEDs, programming keys
Communication: RS‑ Modbus RTU; remote trip/reset supported via comms
External Trip/Reset Input: Voltage-triggered input for external devices (e.g. V trip/reset)
Mounting & Size: -DIN modular width, DIN‑rail EN ; optional panel adapter available