Sensata Gigavac GV241FAB DC Contactor Overview

The Sensata Gigavac GV241FAB is a sealed hermetic DC contactor from the GV24 Series, designed for 400A current switching in 800VDC nominal power systems. It uses a 48VDC control coil, chassis mounting, stud and wire lead termination, and a normally open auxiliary contact. This model is suitable for EV battery systems, battery energy storage equipment, industrial DC power cabinets, marine power control, charging systems, and OEM high-voltage 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 GV241FAB DC contactor is built for reliable high-voltage DC switching in battery and power control systems. As part of the GV24 Series, it provides a 400A contact current rating and 800VDC nominal switching capability. This makes it a practical choice for electric vehicles, battery energy storage systems, DC charging equipment, industrial automation, marine battery systems, and high-voltage power distribution cabinets.

The GV241FAB 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 48VDC coil receives the correct control signal. This allows a lower-voltage control circuit to manage a high-voltage DC load circuit. The 800VDC value is the main power switching rating, while 48VDC is only the coil control voltage.

A key advantage of the Sensata Gigavac GV241FAB is its sealed hermetic construction. The sealed body helps protect the internal contact system from dust, humidity, oxidation, and harsh operating environments. This makes the GV241FAB suitable for vehicle platforms, outdoor energy systems, mobile machinery, and industrial DC cabinets where vibration, moisture, and contamination can reduce the service life of ordinary open-frame contactors.

This version uses stud and wire lead termination for harness-based installation. Compared with PCB pin versions, the wire lead configuration is useful when the contactor needs to be connected into a vehicle harness, control box, or high-voltage power distribution assembly. The “B” auxiliary option indicates a normally open auxiliary contact, which can support status feedback, interlock logic, or battery management system monitoring.

Key Features

• Genuine Sensata Gigavac GV24 Series DC contactor
• 400A contact rating for high-current DC power control
• 800VDC nominal switching voltage for high-voltage battery systems
• 48VDC coil for control circuit 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
• Wide operating temperature range from -55°C to 85°C

Applications

The GV241FAB DC 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 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 GV241FAB can be used as a main positive contactor, main negative contactor, charge path contactor, load disconnect contactor, or safety isolation device depending on the system design. Its 400A current rating and 800VDC switching voltage make it suitable for high-voltage platforms where sealed protection, auxiliary feedback, and stable switching performance are required.

Why Choose Sensata Gigavac GV241FAB

The Sensata Gigavac GV241FAB is a strong option when the system requires 400A current capacity, 800VDC switching voltage, 48VDC coil operation, chassis mounting, 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 for diagnostics, interlock logic, or battery management monitoring.

For replacement and maintenance projects, GV241FAB should be selected when the original design requires GV24 Series performance with 400A current rating, 800VDC nominal switching voltage, 48VDC coil voltage, stud and wire lead termination, and SPST normally open auxiliary contact. Before ordering, confirm coil voltage, auxiliary contact logic, mounting style, terminal type, load current, and system voltage.

FAQ

Q1: What is the full product name of GV241FAB?
A1: The full product name is Sensata Gigavac GV241FAB DC Contactor.

Q2: What is the main switching voltage?
A2: The main switching voltage is 800VDC nominal.

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 400A.

Q5: Does GV241FAB include an auxiliary contact?
A5: Yes. GV241FAB includes a normally open auxiliary contact.

Q6: What is the difference between GV241FAB and GV241FAC?
A6: GV241FAB has a normally open auxiliary contact, while GV241FAC has a normally closed auxiliary contact.