The J4C 55 is a multi-voltage, quarter-turn electric actuator manufactured by the Spanish company J.J. BCN Internacional, S.A. It is designed primarily to automate the opening and closing of industrial quarter-turn valves—such as ball valves and butterfly valves—that are larger than those compatible with the J4C 20 series.
Key Technical Specifications:
Operating torque: 55 Nm
Maximum torque (breakaway): 60 Nm
Operating voltage (S Version): 24–240 VDC/VAC (50/60 Hz)
Operating voltage (B Version): 12 VDC/VAC
Operating time: 13 seconds for a 90° rotation cycle
Duty rating: 75%
Enclosure protection rating: IP67 (weather-resistant)
Operating temperature: -20°C to +70°C
Key Features:
Brushless Motor Technology: Delivers higher efficiency, minimizes wear, and extends service life compared to traditional brushed motors.
Electronic Torque Limiter: Automatically cuts power to the motor and reverses slightly upon detecting an obstruction, protecting both the valve and the actuator mechanism.
Automatic Anti-Condensation Heater: Features an integrated 3.5W heater controlled by a thermal relay; this unit operates continuously when the device is powered, maintaining an internal temperature above 20°C to prevent moisture accumulation.
Manual operation: A handwheel with an integrated clutch disengagement mechanism allows the operator to manually adjust the valve position during a power failure.
Position feedback: Includes two built-in limit switches (microswitches) to stop the motor and two additional auxiliary switches (voltage-free) for remote open/closed position confirmation.
Upgrade & automation modules:
The J4C 55 series design supports various "plug-and-play" internal upgrade options, including:
DPS (Digital Positioning System): Converts the standard On/Off actuator into a modulating unit capable of accepting 4–20mA or 0–10V control signals.
BSR (Battery Safety Return System): An emergency battery backup system that automatically moves the valve to a pre-set safe position (open or closed) upon loss of main power.
Communication options: Can be equipped with plug-in industrial modules supporting Modbus or Bluetooth for diagnostics and wireless connectivity.
Dimensions (mm):
Typical application:
