The ABB 1VCF349770S0909 is a specialized control component designed for the VD4 series of medium-voltage vacuum circuit breakers. This module acts as a critical interface for the breaker’s operating mechanism, facilitating the precise opening and closing sequences required to protect electrical networks. Engineered for high-duty cycles, the ABB 1VCF349770S0909 integrates seamlessly with ABB’s power distribution hardware to ensure rapid arc quenching and reliable fault isolation in utility and industrial substations.
Technical Specifications and Datasheet
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Product ID: 1VCF349770S0909
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Model Designation: VD4 Control/Release Module
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Brand: ABB
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Component Type: Circuit Breaker Auxiliary/Shunt Release
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Dimensions: 140 mm x 85 mm x 60 mm
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Weight: 0.55 kg
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Country of Origin: Italy / Germany
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Rated Voltage: 110V-125V DC (Standard configuration)
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Duty Cycle: 100% ED (Continuous rating)
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Response Time: < 50 ms
Application Fields
This module is primarily used within the primary and secondary distribution networks of power plants and industrial facilities. It is a standard component in UniGear and ZS1 switchgear lineups. Given its high reliability, it is frequently specified for infrastructure-critical environments such as data centers, hospital power backup systems, and heavy industrial manufacturing plants where electrical protection against short circuits and overloads must be absolute.
Product Instructions
The 1VCF349770S0909 should be installed within the low-voltage compartment or the operating mechanism housing of the VD4 circuit breaker. Before installation, ensure the breaker is in the “Open” position and the closing springs are discharged to prevent accidental operation. Align the module with the mechanical actuators and secure the electrical connections to the terminal block as specified in the wiring diagram. Regular maintenance should include checking the integrity of the solenoid coils and ensuring that the mechanical linkage moves freely without obstruction.
Common Questions and Answers
Q: Can this module be used for both Shunt Opening and Shunt Closing functions? A: This specific part number is typically configured as a release or closing solenoid. While the physical housing is similar, you must verify the internal coil impedance and voltage rating against the breaker’s control scheme requirements.
Q: Is it possible to “hot-swap” this module while the switchgear is energized? A: No. For safety reasons, the control circuit must be isolated, and the circuit breaker should be withdrawn to the “Test” or “Disconnected” position before attempting to replace internal control components.
Q: How do I verify if the module has failed? A: A continuity test on the solenoid coil using a multimeter is the most direct method. If the resistance is infinite (open circuit), the coil is likely burnt and the entire module requires replacement.
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ABB 1VCF349770S0910
