Sensata Gigavac HX241CAC

Sensata Gigavac HX241CAC is a 400A 1500VDC High Voltage DC Contactor from the HX24 series, designed for demanding DC switching in fast charging equipment, high-voltage battery systems, power conversion cabinets, and heavy-duty electric platforms. This High Voltage DC Contactor uses a 24VDC coil, stud power terminals, flying lead control termination, chassis mounting, auxiliary contact functionality, and hermetically sealed construction. It is a higher-voltage and higher-current solution than compact GV12 or P Series devices, making it more suitable for main DC paths in equipment that must handle substantial power.

The HX24 platform is built for applications where high-voltage isolation and current capacity must be combined in a rugged package. HX241CAC supports 1500VDC-class switching and a 400A current rating, giving engineers a strong option for modern DC architectures. The sealed design helps protect the internal contact system from moisture, dust, and contamination, while the flying lead configuration supports flexible installation in control cabinets and vehicle power assemblies.

Product Positioning

HX241CAC should be positioned as a heavy-duty High Voltage DC Contactor for charging systems and high-voltage battery power control. It is not a miniature relay or low-current auxiliary switch. Its role is closer to main line isolation, charger output switching, battery string connection, inverter input control, and protected DC bus switching. The 1500VDC capability makes it relevant to high-voltage charging infrastructure and power conversion equipment where lower-voltage contactors would not provide enough margin.

The 24VDC coil is practical for industrial controls, charger control boards, battery management systems, and vehicle platforms that already use 24V auxiliary power. The auxiliary contact can be used for status feedback, interlock logic, or controller diagnostics. In a monitored charging system, this feedback helps confirm whether the High Voltage DC Contactor has responded to a command, improving fault detection and operating sequence control.

Key Specifications

• Manufacturer series: Sensata Gigavac HX24
• Part number: HX241CAC
• Product type: High Voltage DC Contactor
• Main contact form: SPST-NO, normally open according to distributor data
• Rated current: 400A
• Nominal switching voltage: 1500VDC
• Coil voltage: 24VDC
• Termination style: stud power terminals and flying leads
• Mounting style: chassis mount / upright mount
• Auxiliary contact: included
• Construction: hermetically sealed
• Operating temperature range: -55°C to +85°C
• Typical operate time: approximately 20ms according to distributor data
• Typical release time: approximately 12ms according to distributor data
• Must operate voltage: approximately 16VDC according to DigiKey data
• Must release voltage: approximately 2VDC according to DigiKey data

Features and Benefits

The major advantage of HX241CAC is its combination of 400A current capacity and 1500VDC switching capability. A High Voltage DC Contactor in this class can support high-power charging, large battery strings, inverter DC links, and industrial DC buses where both voltage and current stress are significant. This makes HX241CAC suitable for more demanding systems than compact 100VDC or 800VDC contactor families.

The 24VDC coil simplifies integration with common industrial and charging-system control supplies. Many DC fast chargers, battery cabinets, and power conversion systems use 24VDC for controls, sensors, fans, and protection circuits. Selecting a High Voltage DC Contactor with a matching coil voltage can reduce interface complexity and avoid unnecessary auxiliary converters.

The auxiliary contact is useful for supervised switching. A controller can compare the coil command with auxiliary feedback to confirm contactor state, detect abnormal operation, and coordinate precharge or shutdown sequences. This is valuable in charging applications where the contactor must close and open in a controlled order with insulation monitoring, precharge circuits, and safety interlocks.

Hermetically sealed construction helps protect the contact system from harsh operating environments. Charging stations, industrial cabinets, heavy equipment, and outdoor power systems may experience humidity, dust, temperature cycling, and vibration. A sealed High Voltage DC Contactor helps maintain stable operation by reducing exposure of the switching chamber to external contamination.

Applications

HX241CAC is especially suitable for EV charging and high-power charging support systems. In a charging cabinet, this High Voltage DC Contactor can be used to connect or isolate a charger output, switch a high-voltage DC branch, control a battery interface, or support shutdown during service and fault conditions. The 400A rating and 1500VDC voltage class make it appropriate for systems where compact lower-current contactors are not enough.

The contactor can also be used in battery energy storage systems, high-voltage DC distribution, inverter input isolation, electric industrial vehicles, and renewable energy power conversion equipment. In these systems, HX241CAC can serve as a main positive or negative contactor, a protected branch contactor, or a charger interface contactor depending on the system architecture.

Selection Guide

Before selecting HX241CAC, confirm the maximum DC bus voltage, continuous current, peak current, fault strategy, and expected switching duty. Although this High Voltage DC Contactor is rated for 400A and 1500VDC-class applications, the final design must account for load type, inrush current, precharge timing, DC arc behavior, thermal rise, cable or busbar sizing, and protective device coordination.

The coil supply should be a stable 24VDC source. Designers should also verify the flying lead length, mounting orientation, terminal clearance, enclosure spacing, and auxiliary contact wiring. If the system does not need contact feedback, a related HX24 configuration without auxiliary contacts may be more appropriate. If a different control voltage is used, another HX24 coil variant should be reviewed.

FAQ

What is HX241CAC used for?

HX241CAC is used for high-power DC switching in charging systems, battery energy storage, inverter inputs, high-voltage DC distribution, and heavy-duty electric platforms.

Is HX241CAC a High Voltage DC Contactor?

Yes. HX241CAC is an HX24 series High Voltage DC Contactor with 400A current rating and 1500VDC nominal switching capability.

What coil voltage does HX241CAC use?

HX241CAC uses a 24VDC coil, making it suitable for control systems with a 24V auxiliary power supply.

Does HX241CAC include an auxiliary contact?

Yes. Public distributor data lists HX241CAC with auxiliary contact functionality, which can be used for status feedback and control diagnostics.

How is HX241CAC different from GV24 models?

HX241CAC is an HX24 1500VDC High Voltage DC Contactor, while many GV24 models are 800VDC-class contactors. HX241CAC is better suited when the system requires higher voltage capability.

Conclusion

HX241CAC is a 400A 1500VDC High Voltage DC Contactor for charging systems, high-voltage battery equipment, industrial DC distribution, and power conversion platforms. With its Sensata Gigavac HX24 sealed construction, 24VDC coil, flying lead termination, stud power terminals, chassis mounting, and auxiliary contact capability, it is a strong option for OEM designs that require reliable high-current switching in 1500VDC-class DC systems.