Belimo CQKB24-S-LL Actuator 328140-751 This fail-safe actuator ensures the

This fail-safe actuator ensures the system returns to the safety position during a power loss

Automatic Reset: Facilitates seamless system recovery after temporary thermal excursions

this 40-amp contactor can safely replace lower amperage 2-pole units with a 120V coil

always verify the coil voltage on the existing 912-1401-04 nameplate to ensure proper control circuit integration

Belimo CQKB24-S-LL Actuator 328140-751 This fail-safe actuator ensures theThe Belimo CQKB24 S LL is a specialized zone valve actuator designed for 2 way and 3 way ZoneTight valves. Operating on a 24VAC DC power supply, this Electronic Fail Safe (EFS) unit provides reliable Normally Open (NO) or Fail Open (FO) functionality via a supercapacitor power bank. This technical design ensures the valve returns to its emergency position during power loss, providing critical protection in hydronic systems. The unit delivers 22 in lb