Sensata Gigavac GX11FA DC Contactor

The Sensata Gigavac GX11FA is a sealed hermetic DC contactor from the GX11 Series, designed for 150A current switching in power systems up to 800VDC. It uses a 48VDC control coil, chassis mounting, stud and wire lead termination, and no 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 48VDC refers to the coil voltage used to operate the contactor.

Product Description

The Sensata Gigavac GX11FA DC contactor is designed for reliable high-voltage DC switching in compact battery and power control systems. As part of the GX11 Series, this model provides a 150A contact current rating and up to 800VDC maximum switching voltage. It is commonly used in electric vehicles, battery energy storage systems, solar power equipment, marine power systems, industrial DC cabinets, and OEM battery disconnect assemblies.

The GX11FA 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 48VDC 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 48VDC value belongs only to the coil control circuit.

A key advantage of the Sensata Gigavac GX11FA is its sealed hermetic construction. The sealed contact chamber helps protect the internal contact system from dust, humidity, oxidation, and contamination. This makes the GX11FA 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.

This model uses stud and wire lead termination for harness-based installation. The configuration is practical for power distribution boxes, battery disconnect modules, EV control cabinets, and industrial assemblies where the main power terminals require secure stud connections and the coil circuit is routed through flying leads. Since GX11FA does not include an auxiliary contact, it is best suited for systems where separate contact feedback is not required.

Key Features

• Genuine Sensata Gigavac GX11 Series DC contactor
• 150A contact rating for DC power control
• 800VDC maximum switching voltage for high-voltage systems
• 48VDC coil for control circuit operation
• SPST-NO main contact form for normally open switching
• No auxiliary contact for simplified circuit designs
• Hermetically sealed construction for harsh environments
• Stud and wire lead termination for harness-based installation
• 30 ms operate time and 12 ms release time
• Suitable for EV, ESS, solar, marine, and industrial DC systems

Applications

The GX11FA 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 GX11FA can be used as a main contactor, charge contactor, load disconnect contactor, or safety isolation device depending on the electrical design. Its 150A current rating makes it a good fit for medium-current DC platforms where sealed construction, compact size, and stable switching performance are required.

Why Choose Sensata Gigavac GX11FA

The Sensata Gigavac GX11FA is a practical option when the system requires 150A current capacity, up to 800VDC switching voltage, 48VDC coil operation, sealed construction, wire lead termination, and no auxiliary contact. Compared with versions that include auxiliary feedback, this model is simpler for designs where the controller does not need a separate auxiliary signal.

For replacement and maintenance projects, GX11FA should be selected when the original system requires GX11 Series performance with 150A contact rating, 800VDC maximum switching voltage, 48VDC coil voltage, chassis mounting, stud and wire lead termination, and no auxiliary contact. Before ordering, confirm coil voltage, auxiliary contact requirement, load current, switching voltage, mounting space, and terminal requirements.

FAQ

Q1: What is the full product name of GX11FA?
A1: The full product name is Sensata Gigavac GX11FA DC Contactor.

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

Q3: What does 48VDC mean?
A3: 48VDC 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 150A.

Q5: Does GX11FA include an auxiliary contact?
A5: No. GX11FA does not include an auxiliary contact.

Q6: What is the difference between GX11FA and GX11FAB?
A6: GX11FA has no auxiliary contact, while GX11FAB includes a normally open auxiliary contact.