Sensata Gigavac GV251CPX DC Contactor Overview

The Sensata Gigavac GV251CPX is a sealed hermetic DC contactor from the GV250 Series, designed for high-voltage DC switching applications that require 250A current capacity and 1000VDC nominal switching voltage. It uses a 24VDC control coil and PC pin termination, making it suitable for EV battery systems, energy storage equipment, industrial DC power cabinets, marine power control, charging systems, and OEM battery disconnect modules. In this model, 1000VDC refers to the main contact switching voltage, while 24VDC refers to the coil voltage used to operate the contactor.

Product Description

The Sensata Gigavac GV251CPX DC contactor is designed for reliable high-voltage DC power switching in battery and power distribution systems. As part of the GV250 Series, this model provides a 250A contact current rating and 1000VDC nominal switching capability. It is commonly selected for electric vehicles, battery energy storage systems, DC charging equipment, industrial power cabinets, marine battery systems, and OEM power control modules.

The GV251CPX uses an SPST-NO contact form, also described as 1 Form X. The main 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 high-voltage DC load circuit. The 1000VDC value is the main power switching rating, while 24VDC is only the coil control voltage.

A key benefit of the Sensata Gigavac GV251CPX is its sealed hermetic construction. The sealed body helps protect the internal contact system from dust, humidity, oxidation, and harsh operating environments. This is important for vehicle platforms, outdoor energy systems, mobile equipment, and industrial installations where vibration, moisture, and contamination can shorten the service life of ordinary open-frame contactors.

Key Features

• Genuine Sensata Gigavac GV250 Series DC contactor
• 250A contact rating for high-current DC power control
• 1000VDC nominal switching voltage for high-voltage battery systems
• 24VDC coil for control circuit operation
• SPST-NO contact form for normally open switching
• Sealed hermetic construction for harsh environments
• PC pin termination for OEM integration
• 20 ms operate time and 12 ms release time
• Wide operating temperature range from -55°C to 85°C

Applications

The GV251CPX contactor is suitable for high-voltage DC systems that need dependable connection and disconnection of battery, load, or charging circuits. Typical applications include EV battery packs, electric forklifts, AGV power systems, battery management systems, DC charging equipment, renewable energy storage, UPS battery cabinets, marine electric propulsion, and industrial DC distribution.

In battery systems, the Sensata Gigavac GV251CPX can be used as a main positive contactor, main negative contactor, charge path contactor, load disconnect contactor, or emergency isolation device depending on the electrical design. Its 250A current rating and 1000VDC switching voltage make it suitable for high-voltage DC platforms where compact size, sealed protection, and stable switching performance are required.

Why Choose Sensata Gigavac GV251CPX

The Sensata Gigavac GV251CPX is a practical choice when the system requires 250A current capacity, 1000VDC switching voltage, 24VDC coil operation, sealed protection, and PC pin termination. Compared with lower-voltage contactors, this model is better matched to high-voltage battery and DC bus systems. Compared with non-sealed contactors, the hermetic structure helps improve reliability in mobile, outdoor, and vibration-prone environments.

For OEM manufacturers, the PC pin termination can support compact control layouts and reduce wiring complexity. For replacement and maintenance projects, GV251CPX should be selected when the original system requires GV250 Series performance with 250A contact rating, 1000VDC nominal switching voltage, 24VDC coil voltage, PC pins, and no auxiliary contact option.

FAQ

Q1: What is the full product name of GV251CPX?
A1: The full product name is Sensata Gigavac GV251CPX DC Contactor.

Q2: What is the main switching voltage?
A2: The main switching voltage is 1000VDC nominal.

Q3: What does the 24VDC specification mean?
A3: 24VDC 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 250A.

Q5: What is the difference between GV251CPX and GV251BPX?
A5: GV251CPX uses a 24VDC coil, while GV251BPX uses a 12VDC coil.

Q6: What type of termination does it use?
A6: The GV251CPX uses PC pins.