Sensata Gigavac GX12TAB

Sensata Gigavac GX12TAB is a 225A 800VDC High Voltage DC Contactor from the GX12 series, designed for AGV charging docks, autonomous warehouse vehicle chargers, compact docking stations, and medium-current high-voltage DC power modules. This High Voltage DC Contactor uses an SPST-NO-DM main contact form, a 24VDC low-power internal coil, stud power terminals, flying lead control termination, chassis mounting, normally open auxiliary feedback, and hermetically sealed construction. It is a practical option when a charging or docking system needs more current capacity than a 150A contactor but does not require a 350A or 400A platform.

GX12TAB is especially useful in automated charging environments where compact vehicles connect and disconnect frequently. AGVs, AMRs, shuttle systems, and warehouse robots often need a controlled switching point between a charger, battery module, DC/DC converter, or dock-side power rail. The 225A rating gives this High Voltage DC Contactor enough capacity for medium-power charging and distribution paths, while the 24V low-power coil helps reduce auxiliary power demand during long energized periods.

Product Positioning

GX12TAB should be positioned as a 24V low-power coil High Voltage DC Contactor for AGV charging docks and automated mobile equipment power systems. Compared with GX12BA, which uses a 12VDC coil and is better suited to portable service equipment, GX12TAB is matched to 24V control panels and docking controllers. Compared with GX12FCB, this model should be differentiated by its low-power 24V internal coil and shorter, more compact charging-dock use case rather than long-lead battery module wiring.

The normally open auxiliary contact supports monitored dock operation. A charger controller can compare the coil command with auxiliary feedback before enabling output current, confirming vehicle connection, releasing an interlock, or starting the next charging sequence. This makes the High Voltage DC Contactor suitable for automated systems where status confirmation is part of the operating logic.

Key Specifications

• Manufacturer series: Sensata Gigavac GX12
• Part number: GX12TAB
• Product type: High Voltage DC Contactor
• Main contact form: SPST-NO-DM / 1 Form X
• Rated current: 225A
• Switching voltage range: 12-800VDC according to public listings
• Coil voltage: 24VDC
• Coil type: low-power internal coil
• Power termination: stud terminals
• Control termination: flying leads / wire leads
• Mounting style: chassis mount
• Auxiliary contact: normally open auxiliary contact according to RS listing
• Construction: hermetically sealed
• Operating temperature range: -55°C to +85°C according to GX series data
• Typical operate time: approximately 20-30ms according to related GX12 distributor data
• Typical release time: approximately 12ms according to related GX12 distributor data

Features and Benefits

The 225A current rating gives GX12TAB a useful middle position in compact high-voltage switching. A High Voltage DC Contactor in this range can handle charger paths, battery branches, converter inputs, and protected DC outputs where a 150A model may be too small and a 350A model would add unnecessary size.

The 24VDC low-power internal coil is important for equipment that may keep the contactor energized during charging, standby, or controlled transfer states. Lower coil demand can help reduce heat and auxiliary power usage inside small charging cabinets, mobile equipment docks, and compact DC control boxes.

The normally open auxiliary contact gives the control system a simple feedback path. In an automated charging dock, the controller can verify whether the High Voltage DC Contactor followed the command before allowing current flow or before reporting the dock as ready. This improves diagnostics without requiring the system to infer status only from bus voltage.

Stud terminals provide secure high-current connections for cables or busbars. Flying leads keep the control side flexible, allowing the contactor to be mounted near the charger output or DC bus while the coil and auxiliary wires route to the controller or interlock harness.

Hermetically sealed construction helps protect the contact chamber from dust, humidity, and airborne contamination. This is useful in warehouses, factory floors, logistics hubs, and service areas where automated vehicles and charging docks may operate for long hours with repeated duty cycles.

Applications

GX12TAB is especially suitable for AGV charging docks and automated mobile equipment charging systems. In a dock-side charger, this High Voltage DC Contactor can connect the charger output, isolate a vehicle battery interface, switch a converter branch, or disconnect a protected DC path during service and fault events.

The contactor can also be used in warehouse automation cabinets, compact industrial chargers, mobile robot charging stations, battery swap tools, DC distribution modules, and charger validation equipment. Its 225A rating and 800VDC class make it appropriate for systems that need meaningful current capacity in a compact sealed package.

Selection Guide

Before selecting GX12TAB, confirm maximum DC voltage, continuous current, peak current, inrush current, switching frequency, and load type. Charging systems may include output capacitance, precharge timing, connector sequencing, and battery management interlocks that affect contactor stress. This High Voltage DC Contactor should be evaluated with the full charger and vehicle interface design.

The coil supply should be a stable 24VDC source. If the equipment uses 12VDC control power, GX12BA may be a better match. If longer lead routing or a 48V control architecture is required, GX12FCB or another GX12 variant should be reviewed. If feedback is not needed, a no-auxiliary configuration may simplify wiring.

FAQ

What is GX12TAB used for?

GX12TAB is used for AGV charging docks, mobile robot chargers, compact industrial charging systems, converter inputs, and 800VDC-class medium-current switching.

Is GX12TAB a High Voltage DC Contactor?

Yes. GX12TAB is a Sensata Gigavac GX12 series High Voltage DC Contactor with 225A current rating and 12-800VDC switching capability.

What coil voltage does GX12TAB use?

GX12TAB uses a 24VDC low-power internal coil, making it suitable for charging cabinets and automation systems with a 24V auxiliary supply.

Does GX12TAB include auxiliary feedback?

RS lists GX12TAB with a normally open auxiliary configuration, so it can be used for contactor status feedback in monitored charging systems.

How is GX12TAB different from GX12BA?

GX12TAB uses a 24V low-power internal coil and normally open auxiliary feedback, while GX12BA uses a 12VDC coil and is better treated as a simpler no-feedback configuration.

Conclusion

GX12TAB is a 225A 800VDC High Voltage DC Contactor for AGV charging docks, automated warehouse vehicle chargers, compact industrial charging cabinets, and medium-current DC power modules. With its Sensata Gigavac GX12 sealed construction, 24VDC low-power internal coil, stud terminals, flying leads, chassis mounting, and normally open auxiliary contact, it is a practical choice for OEM systems that need monitored 800VDC switching in compact automated charging equipment.