ABB – 1SVR450081R0000 (CM-KRN) – Contact Protection/Monitoring Relay 220–240VAC

The ABB CM‑KRN contact protection relay (P/N SVRR) safeguards and monitors the integrity of control contacts by detecting excessive bounce or open‑circuit resistance. Once the monitored contact engages within the set time, a clean, stabilized relay output is provided. This relay is ideal for applications where reliable contact closure is essential, such as in motor starters, interlock circuits, and safety systems.

• Model / P/N: SVRR (CM‑KRN)  

• Function: Monitors switch‑on/off contact resistance and applies on‑delay timing; provides change‑over (DPDT) relay outputs  

• Supply Voltage:  –  VAC, / Hz  

• Control Range (Monitored Resistance): – kΩ or – kΩ selectable  

• Timing Delay: Adjustable ON‑delay from . to  s  

• Relay Outputs: DPDT contacts rated  VAC /  A (AC‑)  

• Operating Range: – °C to + °C; screw‑clamp terminals; IP protection;  ×  ×  mm