Sensata Gigavac GX26BAB DC Contactor

The Sensata Gigavac GX26BAB is a sealed hermetic DC contactor from the GX26 Series, designed for high-current switching in power systems up to 800VDC. It provides a 600A contact rating, 12VDC coil operation, stand-up chassis mounting, stud and wire lead termination, 38 cm / 15 in flying leads, 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 12VDC refers to the coil voltage used to operate the contactor.

Product Description

The Sensata Gigavac GX26BAB DC contactor is designed for reliable high-current switching in demanding DC power systems. As part of the GX26 Series, this model supports a 600A contact current rating and up to 800VDC maximum switching voltage. It is commonly used in EV battery systems, energy storage equipment, power management systems, industrial DC cabinets, marine electrical systems, solar power equipment, and battery disconnect applications.

The GX26BAB uses an SPST-NO main contact arrangement, also described as 1 Form X. The main contact remains open when the coil is not energized and closes when the 12VDC coil receives the correct control voltage. This allows a low-voltage control circuit to manage a high-current DC power path. The 800VDC value belongs to the main switching circuit, while the 12VDC value belongs only to the coil control circuit.

A key advantage of the Sensata Gigavac GX26BAB is its rugged EPIC hermetic seal. The sealed contact chamber helps protect the internal contact system from dust, moisture, oxidation, and contaminated environments. The GX26 Series is designed for harsh conditions and is suitable for systems where vibration, humidity, outdoor exposure, or high current stress may reduce the life of ordinary open-frame contactors.

The GX26 platform uses stand-up mounting with an integrated safety cover. This design helps simplify power cable routing and reduces the need for specially routed cables, special bus bars, or special lugs. It is useful in battery packs, DC distribution assemblies, and equipment layouts where installation space and service access matter.

The GX26BAB also includes a normally open auxiliary contact. This auxiliary contact can provide contactor status feedback to a controller, battery management system, or safety circuit after the main contact changes state. Compared with GX26BA, which has no auxiliary contact, GX26BAB is better suited for systems that need diagnostics, interlock logic, or contactor position confirmation.

Key Features

• Genuine Sensata Gigavac GX26 Series DC contactor
• 600A contact rating for high-current DC power control
• 800VDC maximum switching voltage for battery and DC bus systems
• 12VDC coil with internal coil suppression
• SPST-NO main contact form for normally open switching
• SPST normally open auxiliary contact for feedback or interlock use
• Rugged EPIC hermetic seal for harsh environments
• Stand-up mounting with integrated safety cover
• Stud and 38 cm / 15 in wire lead termination
• Suitable for EV, ESS, marine, solar, and industrial DC systems

Applications

The GX26BAB DC contactor is suitable for systems that need reliable connection and disconnection of high-current 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 GX26BAB can be used as a main contactor, charge contactor, load disconnect contactor, or safety isolation device depending on the electrical design. Its 600A current rating makes it a strong fit for high-current DC platforms where sealed construction, auxiliary feedback, compact mounting, and stable switching performance are required.

Why Choose Sensata Gigavac GX26BAB

The Sensata Gigavac GX26BAB is a strong option when the system requires 600A current capacity, up to 800VDC switching voltage, 12VDC coil operation, sealed construction, stand-up mounting, 15 in wire leads, and a normally open auxiliary contact. Compared with versions without auxiliary feedback, this model gives the control system an additional status signal for diagnostics or interlock logic.

For replacement and maintenance projects, GX26BAB should be selected when the original system requires GX26 Series performance with 600A contact rating, 800VDC maximum switching voltage, 12VDC coil voltage, stand-up chassis mounting, stud and wire lead termination, and normally open auxiliary contact. Before ordering, confirm coil voltage, auxiliary contact logic, load current, switching voltage, mounting space, and terminal requirements.

FAQ

Q1: What is the full product name of GX26BAB?
A1: The full product name is Sensata Gigavac GX26BAB DC Contactor.

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

Q3: What does 12VDC mean?
A3: 12VDC is the coil voltage used to operate the contactor, not the main load voltage.

Q4: What is the current rating?
A4: The contact rating current is 600A.

Q5: Does GX26BAB include an auxiliary contact?
A5: Yes. GX26BAB includes an SPST normally open auxiliary contact.

Q6: What is the difference between GX26BAB and GX26BA?
A6: GX26BAB includes a normally open auxiliary contact, while GX26BA has no auxiliary contact.