Sensata Gigavac GX11CA

Sensata Gigavac GX11CA is a GX11 series High Voltage DC Contactor for compact automation power units, small DC cabinets, charger auxiliaries, and 24V-controlled battery systems. This High Voltage DC Contactor provides a 150A current rating, 800VDC maximum switching voltage, 24VDC coil, SPST-NO double-make contact form, stud terminals, wire leads, chassis mounting, and hermetically sealed construction. For designers who need a smaller sealed switching device with a standard industrial control voltage, the GX11CA High Voltage DC Contactor is a practical option.

The GX11CA High Voltage DC Contactor is different from GX11BA mainly in coil voltage. GX11BA uses a 12VDC coil, while GX11CA uses a 24VDC coil. That makes the GX11CA High Voltage DC Contactor better suited to compact automation panels, industrial battery modules, charger control boxes, and equipment where a 24V control rail is already available. The 150A current class helps avoid oversized contactors in moderate-current DC power paths.

Product Positioning

GX11CA is positioned as a compact 24V-control High Voltage DC Contactor for industrial automation and auxiliary DC power systems. It is not intended for 600A main traction switching or 1500VDC HVDC conversion. Instead, this High Voltage DC Contactor serves controlled switching points in smaller battery systems, service disconnect boxes, DC UPS modules, and inverter support circuits.

The page angle for GX11CA is compact automation power. In automated equipment, a High Voltage DC Contactor may be used to enable a battery branch, isolate a charger output, or disconnect a DC load before service. The 24VDC coil allows the GX11CA High Voltage DC Contactor to interface with common PLC outputs, safety relays, BMS controllers, and industrial control boards when the driver circuit is properly designed.

Key Specifications

• Model: GX11CA
• Brand: Sensata-Gigavac
• Series: GX11
• Product type: High Voltage DC Contactor
• Current rating: 150A High Voltage DC Contactor class
• Voltage rating: up to 800VDC High Voltage DC Contactor service
• Coil voltage: 24VDC coil for High Voltage DC Contactor control
• Main contact form: SPST-NO-DM / 1 Form X
• Termination style: stud terminals and wire leads
• Mounting type: chassis mount
• Construction: hermetically sealed High Voltage DC Contactor body
• Coil current reference: about 280mA according to DigiKey data
• Coil power reference: about 6.8W according to DigiKey data
• Operating temperature reference: -55°C to 85°C according to DigiKey data
• Typical role: automation battery disconnect, charger auxiliary contactor, compact DC load isolation

Features and Benefits

The first benefit of GX11CA is its 24VDC coil. Many industrial control systems are built around a 24V auxiliary supply, so a 24V coil High Voltage DC Contactor can fit cleanly into the existing control architecture. The GX11CA High Voltage DC Contactor can be driven by suitable contactor drivers, relay outputs, BMS outputs, or safety circuits without adding a separate 12V control supply.

The second benefit is compact sealed construction. A 150A High Voltage DC Contactor can serve moderate-current DC switching requirements without the size and cost of a larger 350A or 600A contactor. In small automation equipment, compact energy modules, and charger support panels, the GX11CA High Voltage DC Contactor helps keep the power section organized and serviceable.

The third benefit is environmental protection. DigiKey lists GX11CA with hermetically sealed construction. A sealed High Voltage DC Contactor helps protect the contact chamber from dust, moisture, and contamination. This is useful in factory equipment, mobile automation, battery cabinets, and DC power modules where the contactor may be close to fans, vents, cables, or service openings.

The fourth benefit is straightforward cabling. Stud terminals provide secure connections for DC cable lugs, while wire leads provide flexible control wiring. This lets the High Voltage DC Contactor fit into compact enclosures without requiring a large connector block or complex busbar layout. For assembly teams, the GX11CA High Voltage DC Contactor is easier to position near the switched load or battery output.

Applications

GX11CA is well suited for compact automation systems that require a High Voltage DC Contactor with 24V control. It can switch battery power for automated guided vehicles, robotic service tools, small industrial machines, DC UPS modules, and portable energy systems. The High Voltage DC Contactor can also isolate a charger output or inverter input in equipment where the current demand is within the 150A class.

In charging support equipment, the GX11CA High Voltage DC Contactor can control auxiliary charge paths, service loops, or moderate-current DC branches. In battery cabinets, it can be used as a rack-level disconnect, test fixture contactor, or controlled load isolation device. The High Voltage DC Contactor is also practical for laboratory power systems, compact renewable energy prototypes, and industrial controls that require sealed 800VDC-capable switching.

Because GX11CA is a normally open High Voltage DC Contactor, it supports controlled startup and shutdown logic. The contactor remains open until energized by the control system, which is useful for service safety, fault response, and battery isolation. The final design should include proper fusing, precharge if needed, coil suppression review, and thermal validation.

Selection Guide

Select GX11CA when the application needs a 150A High Voltage DC Contactor for an 800VDC maximum circuit and the control system uses a 24VDC coil supply. If the equipment uses 12V auxiliary control, GX11BA may be the better match. If the system needs auxiliary contact feedback, verify another GX11 suffix with the required auxiliary configuration.

Before replacing another product with this High Voltage DC Contactor, confirm current rating, maximum DC voltage, coil voltage, coil driver capacity, terminal clearance, mounting footprint, release voltage, operating temperature, and wiring layout. A High Voltage DC Contactor used in automation equipment should still be reviewed as part of the full DC safety architecture.

FAQ

Is GX11CA a High Voltage DC Contactor?

Yes. GX11CA is a Sensata-Gigavac GX11 High Voltage DC Contactor rated for 150A and up to 800VDC maximum switching voltage.

What coil voltage does GX11CA use?

This High Voltage DC Contactor uses a 24VDC coil, which is suitable for industrial control panels and automation equipment.

Does GX11CA include auxiliary contacts?

DigiKey lists sealed construction for GX11CA but does not list auxiliary contacts as a feature, so this High Voltage DC Contactor should be treated as a non-auxiliary version unless the order code confirms otherwise.

Where is GX11CA commonly used?

The GX11CA High Voltage DC Contactor is commonly used in compact automation power units, DC UPS modules, charger auxiliary circuits, battery disconnect boxes, and small industrial DC systems.

Conclusion

Sensata Gigavac GX11CA is a compact 150A High Voltage DC Contactor with 800VDC maximum switching voltage, 24VDC coil control, SPST-NO contact form, stud terminals, wire leads, chassis mounting, and hermetically sealed construction. It is a practical High Voltage DC Contactor for automation power units, small battery cabinets, charger support circuits, and moderate-current DC isolation points that need sealed operation with 24V control compatibility.