Sensata Gigavac GV244PAX

Sensata Gigavac GV244PAX is a 400A 800VDC High Voltage DC Contactor from the GV24 series, designed for renewable energy systems, energy storage equipment, DC power conversion, and high-current battery switching. This High Voltage DC Contactor uses an SPST-NO main contact arrangement, 12/24VDC external PWM coil control, stud power terminals, wire lead control termination, and sealed construction. For OEM designs that need a rugged High Voltage DC Contactor for solar storage cabinets, inverter DC links, battery racks, and protected DC bus isolation, GV244PAX provides a practical balance of current capacity, voltage rating, and environmental reliability.

As a GV24 series High Voltage DC Contactor, GV244PAX is built for 800VDC-class power systems where controlled connection and disconnection are required. The 400A current rating supports demanding DC paths in energy storage and renewable energy equipment. Its sealed construction helps protect the internal contact system from dust, moisture, and contamination, which is important for outdoor power cabinets, battery rooms, solar-plus-storage systems, and industrial renewable energy installations.

Product Positioning

GV244PAX is positioned as a High Voltage DC Contactor for renewable energy and energy storage applications that need 400A switching capability and 800VDC nominal voltage support. It is suitable for battery energy storage systems, photovoltaic energy storage cabinets, inverter input isolation, DC combiner equipment, and protected battery string switching. Compared with lower-voltage contactors, GV244PAX is better suited to modern DC architectures where higher voltage reduces current losses and improves system efficiency.

This High Voltage DC Contactor is also useful when the control circuit is designed around an external PWM or economizer drive. The 12/24VDC external PWM coil configuration allows engineers to manage coil pull-in and hold behavior through the system control design. This can help reduce hold power and heat in equipment that may stay energized for long periods, such as renewable energy storage systems and DC distribution cabinets.

Key Specifications

• Manufacturer series: Sensata Gigavac GV24
• Part number: GV244PAX
• Product type: High Voltage DC Contactor
• Contact arrangement: SPST-NO, normally open
• Rated current: 400A
• Nominal switching voltage: 800VDC
• Coil voltage: 12/24VDC external PWM
• Power terminals: stud terminals
• Control termination: wire leads / flying leads
• Mounting style: chassis mount or PCB M8 mounting depending on distributor reference
• Construction: hermetically sealed
• Operating temperature range: -55°C to +85°C
• Operate time: approximately 20ms according to distributor data
• Release time: approximately 12ms according to distributor data

Features and Benefits

The main advantage of GV244PAX is its ability to control high-current DC circuits in a compact sealed package. As a 400A High Voltage DC Contactor, it can be used for main battery isolation, inverter connection, charge and discharge path control, and protected DC bus switching. The normally open contact design keeps the circuit open until the coil drive closes the contactor, supporting safer start-up, shutdown, and service isolation strategies.

The 800VDC rating makes this High Voltage DC Contactor suitable for higher-voltage renewable energy and storage systems. Solar storage cabinets, battery energy storage systems, and DC-coupled inverter designs often require components that can handle elevated DC voltage while maintaining reliable switching behavior. GV244PAX fits this requirement when the system current, voltage, and switching duty remain within specification.

The sealed construction is important in renewable energy equipment because installations may face humidity, dust, vibration, and wide temperature variation. A sealed High Voltage DC Contactor helps reduce the impact of environmental contamination on the contact system. This supports more stable performance in outdoor cabinets, energy storage containers, industrial battery rooms, and power conversion assemblies.

GV244PAX uses stud power terminals and wire lead control termination, which can be convenient for high-current busbar or cable connections while keeping the control wiring flexible. The external PWM coil configuration gives engineers control over the coil drive strategy, allowing the system to manage pull-in current and hold power according to the application requirement.

Applications

GV244PAX is especially suitable for renewable energy systems, which is the recommended application focus for this model. In a solar-plus-storage cabinet, this High Voltage DC Contactor can isolate a battery string, connect an inverter DC input, switch a protected DC branch, or disconnect a power path during service and fault conditions. The 400A current rating and 800VDC voltage capability make it appropriate for high-power storage and conversion equipment.

In battery energy storage systems, GV244PAX can support charge path control, discharge path control, emergency disconnect, and maintenance isolation. In photovoltaic support equipment, this High Voltage DC Contactor may be used around DC bus control, inverter protection, and controlled energization circuits. It can also be applied in industrial renewable energy equipment, backup power systems, utility power modules, and DC distribution systems where sealed high-current switching is required.

Selection Guide

Before selecting GV244PAX, confirm the DC bus voltage, continuous current, peak current, inrush profile, and actual switching duty. This High Voltage DC Contactor is rated for 800VDC-class systems and 400A current paths, but the final design must still account for DC arc behavior, cable or busbar sizing, thermal rise, precharge requirements, and protective fuse coordination. Capacitive inverter inputs and battery systems often require a precharge circuit before the main contactor closes.

The coil drive must also be reviewed. GV244PAX uses a 12/24VDC external PWM coil configuration, so the control system should provide the correct external PWM or economizer behavior. If the equipment requires a standard DC coil with built-in drive features, another GV24 configuration may be more suitable. Designers should also verify mounting method, terminal clearance, control lead routing, and environmental requirements before production approval.

FAQ

Is GV244PAX normally open?

Yes. GV244PAX is an SPST-NO High Voltage DC Contactor, so the main power contacts remain open until the coil drive closes the contactor.

What current and voltage does GV244PAX support?

GV244PAX is a 400A High Voltage DC Contactor with an 800VDC nominal switching voltage rating in the Sensata Gigavac GV24 series.

What coil configuration does GV244PAX use?

GV244PAX uses a 12/24VDC external PWM coil configuration. The control system should include the proper external PWM or economizer drive strategy.

Is GV244PAX suitable for renewable energy systems?

Yes. This High Voltage DC Contactor is well suited for renewable energy storage, solar-plus-storage cabinets, inverter DC links, battery racks, and high-current DC isolation.

What is the difference between GV244PAX and GV244PPX?

Both are GV24 series 400A 800VDC contactors with external PWM coil control. GV244PAX is commonly listed with stud terminals and wire leads, while GV244PPX is commonly listed with PC pin termination. Final selection should follow the exact datasheet and distributor configuration for the required mounting and wiring method.

Conclusion

GV244PAX is a 400A 800VDC High Voltage DC Contactor designed for renewable energy, battery energy storage, inverter systems, and high-current DC power control. With its Sensata Gigavac GV24 sealed construction, SPST-NO contact arrangement, 12/24VDC external PWM coil, stud terminals, and wire lead control termination, it is a strong option for OEM systems that need reliable high-voltage DC isolation. For renewable energy equipment that requires rugged switching, controlled coil drive, and high-current capability, GV244PAX is a practical High Voltage DC Contactor choice.