Sensata Gigavac GX12TAB DC Contactor

The Sensata Gigavac GX12TAB is a sealed hermetic DC contactor from the GX12 Series, designed for 225A current switching in power systems up to 800VDC. It uses a 24VDC low-power internal coil, chassis mounting, stud and wire lead termination, and a normally open auxiliary contact. This model is suitable for electric vehicles, battery energy storage systems, industrial DC power distribution, marine power control, solar equipment, power management systems, and OEM battery disconnect modules. In this model, 800VDC refers to the main contact switching voltage, while 24VDC refers to the coil voltage used to operate the contactor.

Product Description

The Sensata Gigavac GX12TAB DC contactor is designed for reliable high-voltage DC switching in compact battery and power control systems. As part of the GX12 Series, this model provides a 225A contact current rating and up to 800VDC maximum switching voltage. It is commonly selected for electric vehicles, battery energy storage systems, solar power equipment, marine power systems, industrial DC cabinets, and OEM battery disconnect assemblies.

The GX12TAB uses an SPST-NO main contact arrangement, also described as 1 Form X. The main power contact remains open when the coil is not energized and closes when the 24VDC coil receives the correct control signal. This allows a low-voltage control circuit to manage a higher-voltage DC load path. The 800VDC value belongs to the main switching circuit, while the 24VDC value belongs only to the coil control circuit.

A key advantage of the Sensata Gigavac GX12TAB is its low-power internal coil configuration. The T coil option is a 24VDC low-power coil designed to reduce continuous coil power during operation. This can be useful in battery-powered equipment where control power consumption matters. Compared with a standard 24VDC coil version, the GX12TAB is better suited for systems that need efficient hold power while still using a 24V control architecture.

The GX12TAB also includes a normally open auxiliary contact. This auxiliary contact can provide feedback to a controller, battery management system, or safety circuit. It is useful for confirming contactor state, supporting interlock logic, or adding diagnostic feedback in battery disconnect and power distribution systems.

The GX12 Series uses hermetically sealed construction and a rugged contactor design for demanding environments. The sealed body helps protect the internal contact system from dust, humidity, oxidation, and contamination. This makes the GX12TAB suitable for mobile equipment, outdoor battery systems, industrial power modules, and vehicle platforms where vibration, moisture, and harsh operating conditions can reduce the service life of ordinary open-frame contactors.

Key Features

• Genuine Sensata Gigavac GX12 Series DC contactor
• 225A contact rating for DC power control
• 800VDC maximum switching voltage for high-voltage systems
• 24VDC low-power internal coil for efficient control operation
• SPST-NO main contact form for normally open switching
• SPST normally open auxiliary contact for feedback or interlock use
• Hermetically sealed construction for harsh environments
• Stud and wire lead termination for harness-based installation
• 20 ms operate time and 12 ms release time
• Suitable for EV, ESS, solar, marine, and industrial DC systems

Applications

The GX12TAB DC contactor is suitable for systems that need reliable connection and disconnection of DC battery, load, or charging circuits. Typical applications include electric vehicles, battery energy storage systems, solar power equipment, DC power cabinets, marine battery systems, UPS battery modules, material handling equipment, and industrial automation systems.

In a battery system, the Sensata Gigavac GX12TAB can be used as a main contactor, charge contactor, load disconnect contactor, or safety isolation device depending on the electrical design. Its 225A current rating makes it a good fit for medium-current DC platforms where sealed construction, auxiliary feedback, and low coil power are required.

Why Choose Sensata Gigavac GX12TAB

The Sensata Gigavac GX12TAB is a strong option when the system requires 225A current capacity, up to 800VDC switching voltage, 24VDC low-power coil operation, sealed construction, wire lead termination, and a normally open auxiliary contact. Compared with versions without auxiliary feedback, this model gives the control system an additional status signal. Compared with standard coil versions, the low-power coil can help reduce control power consumption.

For replacement and maintenance projects, GX12TAB should be selected when the original system requires GX12 Series performance with 225A contact rating, 800VDC maximum switching voltage, 24VDC low-power internal coil, chassis mounting, stud and wire lead termination, and normally open auxiliary contact. Before ordering, confirm coil voltage, coil type, auxiliary contact logic, load current, switching voltage, and mounting requirements.

FAQ

Q1: What is the full product name of GX12TAB?
A1: The full product name is Sensata Gigavac GX12TAB DC Contactor.

Q2: What is the main switching voltage?
A2: The main switching voltage is up to 800VDC maximum.

Q3: What does 24VDC mean?
A3: 24VDC is the coil voltage used to operate the contactor, not the main load voltage.

Q4: What is special about the T coil code?
A4: The T coil code indicates a 24VDC low-power internal coil configuration.

Q5: What is the current rating?
A5: The contact rating current is 225A.

Q6: Does GX12TAB include an auxiliary contact?
A6: Yes. GX12TAB includes a normally open auxiliary contact.