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3VA9978-0BA22
The Siemens 3VA9978-0BA22 is a precision-engineered shunt trip, designed to operate effectively with molded case circuit breakers from the 3VA4, 3VA5, and 3VA6 series. With a rated operational voltage range from 110 to 127 Volts AC, it is suitable for typical industrial voltage applications.
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Technical specifications for 3VA9978-0BA22
| Manufacturer | Siemens |
|---|---|
| Product Type | Shunt Trip |
| Product Line | SENTRON |
| Part Number | 3VA9978-0BA22 |
| UPC | 804766323553 |
| Rated Operating Voltage | 110 to 127 Volts AC |
| Overvoltage Category | Category III |
| Surge Voltage Resistance | 810 Volt-Amperes |
| Number of Slots | 3 Slots |
| Operating Frequency | 50 to 60 Hertz |
| Termination Style | Screw-Type Terminals |
| Compatible Circuit Breakers | Molded Case Circuit Breakers from 3VA4, 3VA5, and 3VA6 Series |
| Tightening Torque for the Screw Terminals | 0.4 to 0.5 Newton-Meter |
| Applicable Conductor Size | 20 to 16 American Wire Gauge (AWG) |
| Insulation Voltage Rating | 690 Volts |
| Tripping Unit | Solid-State Trip Unit |
| Current Breaking Capacity | 100 Kiloamperes at 480 Volts AC |
The 3VA9978-0BA22 from Siemens is categorized as a shunt trip, integral to enhancing the functionality of molded case circuit breakers. This component is engineered to operate within a voltage range of 110 to 127 VAC, providing reliable control over electrical systems. It is particularly suited for 50 to 60 Hertz applications, signaling its versatility in standard operation.
Featuring three slots for installation, the trip unit utilizes screw-type terminals, making it straightforward to connect. Users must apply a torque of 0.4 to 0.5 Newton-meters when securing connections. It can accommodate conductors within the size range of 20 to 16 American Wire Gauge (AWG), adding adaptability in wiring configurations.
As part of the SENTRON lineup, this shunt trip supports circuit breakers from the 3VA4, 3VA5, and 3VA6 series. The insulation voltage is rated at 690 Volts, reinforcing its capability to perform under various electrical conditions. Additionally, it boasts a surge voltage resistance rating of 810 volt-amperes, ensuring resilience against transient electrical surges.
With a current breaking capacity rated at 100 kiloamperes at 480 Volts AC, the shunt trip unit employs a solid-state trip design, which offers enhanced reliability and performance over traditional mechanisms. Marked as Overvoltage Category III, the 3VA9978-0BA22 is engineered to withstand demanding electrical environments, making it a crucial component for industrial applications.
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