Sensata Gigavac GX12CCB

The Sensata Gigavac GX12CCB is a GX12 Series hermetically sealed DC power contactor designed for compact high-current switching in electric vehicles, battery systems, industrial DC equipment, and power management circuits. This model is configured with a 225 A current rating, 800VDC maximum switching voltage, a 24VDC coil, 48 inch flying leads, and a normally open auxiliary contact. The 800VDC rating applies to the main load circuit, while the 24VDC rating applies to the coil/control circuit that operates the contactor.

Product Description

The Sensata Gigavac GX12CCB is a compact high-power DC contactor for applications that require reliable switching of DC loads from low voltage up to 800VDC. As part of the GX12 Series, it provides a 225 A current rating in a rugged sealed package, making it suitable for electric vehicles, battery packs, energy storage systems, DC power distribution, industrial power control, marine equipment, heavy-duty vehicles, and battery charger systems.

GX12CCB uses a normally open main contact. In the de-energized state, the main contact is open and the load circuit is isolated. When the 24VDC coil is energized, the contactor closes and allows current to flow through the main terminals. When coil power is removed, the contactor opens again. This operation makes the GX12CCB useful as a battery disconnect, main power contactor, charge contactor, auxiliary load contactor, or DC isolation device in a properly designed electrical system.

The complete model number should be written as Sensata Gigavac GX12CCB. “GX12” identifies the 225 A GX Series contactor family. The first “C” indicates the 24VDC coil version. The second “C” indicates 48 inch flying leads. The final “B” indicates a normally open auxiliary contact. This means the main power contact is SPST-NO, and the auxiliary contact is also normally open. The auxiliary contact is intended for low-current signal feedback, not for switching the main load.

Key Features

• 225 A current rating for compact high-current DC switching systems.
• Switching capability from 12VDC up to 800VDC.
• 24VDC coil for common industrial, vehicle, and battery control circuits.
• SPST-NO main contact for controlled load connection and isolation.
• Normally open auxiliary contact mechanically linked to the main contacts.
• 48 inch flying leads for flexible installation in enclosures and vehicles.
• Hermetically sealed EPIC construction for harsh operating environments.
• Internal coil suppression for simplified control circuit design.
• Wide operating temperature range from -55°C to +85°C.
• RoHS compliant GX Series design suitable for modern power systems.

Applications

The Sensata Gigavac GX12CCB is commonly used in electric vehicles, hybrid vehicles, battery management systems, energy storage equipment, industrial automation systems, material handling equipment, DC power supplies, battery chargers, renewable energy equipment, marine electrical systems, and test equipment. Its 225 A rating makes it a practical choice when the application needs more current capacity than a small pre-charge contactor but does not require a larger 350 A, 400 A, or 500 A contactor.

The 48 inch flying leads are useful when the contactor is installed away from the control board or wiring harness connection point. This gives the system designer more flexibility in placing the contactor near the battery, busbar, fuse, or power distribution point while still routing the coil and auxiliary wiring to the controller.

Design Notes

The 800VDC and 24VDC values describe different parts of the product. The 800VDC specification applies to the main contacts and describes the load-side voltage range the contactor is designed to switch. The 24VDC specification applies to the coil and describes the control voltage needed to operate the contactor. A battery management system or controller may energize the 24VDC coil while the main contacts switch a much higher DC bus.

GX12CCB includes a normally open auxiliary contact. This auxiliary contact can be used for contactor status feedback, diagnostics, interlock logic, and control confirmation. Because it is mechanically linked to the main power contacts, it gives useful information about contactor state. However, the auxiliary contact has a low-current signal rating and should not be used as a power switching path.

For capacitive loads, such as inverter inputs or DC link capacitors, a pre-charge circuit is normally required before closing the main contactor. Pre-charge helps reduce inrush current and protects the contactor, fuse, busbar, cable, and connected electronics. Coil drive design should also follow the GX12 Series requirements, including voltage range, release behavior, and suppression guidance.

Why Choose Sensata Gigavac GX12CCB

GX12CCB is a strong choice when a system needs a sealed 225 A DC contactor with 24V control, long flying leads, and normally open auxiliary feedback. The hermetic sealed design helps protect the internal contact system from dust, moisture, and harsh environments, while the compact GX12 package supports installation in space-limited equipment.

For backend product listings, inventory records, and replacement orders, use the full model name Sensata Gigavac GX12CCB. Avoid shortening it to GX12, because GX12 variants may have different coil voltages, lead lengths, or auxiliary contact configurations. For example, GX12CAB uses 15 inch leads, GX12CB has no auxiliary contact, and GX12CCC has a normally closed auxiliary contact. GX12CCB specifically means 24VDC coil, 48 inch leads, and normally open auxiliary contact.

FAQ

Is GX12CCB an 800V or 24V contactor?
It uses both values for different circuits. The main contacts switch DC loads up to 800VDC, while the coil/control circuit is 24VDC.

What is the current rating of GX12CCB?
GX12CCB is rated for 225 A continuous current.

Does GX12CCB include an auxiliary contact?
Yes. The final B in GX12CCB indicates an SPST normally open auxiliary contact.

What lead length does GX12CCB use?
GX12CCB uses 48 inch, or 122 cm, flying leads for the coil and auxiliary wiring.