What is the GX series and which applications is it designed for?

The GIGAVAC GX series is a hermetically sealed DC contactor family proven in thousands of applications since 2002. Insulation uses a patented ceramic technology, giving the contactors high-temperature tolerance and long service life. Designed by Sensata Technologies for mobility and a wide range of industrial uses, the 26-model line offers 150 A to 1000 A continuous contact current and switching up to 800 Vdc. It is preferred for EV power management, energy-storage systems (ESS), industrial machine control, forklift / AGV, pre-charge circuits, military and off-road vehicles.

What is the maximum operating voltage of the GX series?

Standard GX models switch up to 800 Vdc. The PWM-coil GXV600 and GXV611 reach 900 Vdc, and the GXVB611 reaches 1000 Vdc. The rated voltage is the upper limit defined for make/break cycles; using these contactors at higher system voltages requires a Sensata application review.

What is the current range of the GX series?

Continuous contact current ranges from 150 A (GX11/GX21) up to 1000 A (GX110). Intermediate ratings: 225 A (GX12), 350 A (GX14, GX23, GX34, GXL14, GXNC14), 600 A (GX16, GX26, GX66, GXV600/611, GXVB611, GXSA16). Inrush capability reaches 5000 A — handling EV pre-charge and ESS make-current safely.

In which environmental conditions do GX contactors operate?

The GX series operates from -55 °C to 85 °C and, thanks to its hermetic seal, performs reliably in harsh environments — including underwater. It is engineered to handle nearly any harsh atmosphere, can be mounted in any position (bottom, side, busbar, stand-up), and uses stainless-steel hardware and inserts for years of corrosion-free service.

Which coil control voltages does the GX series offer?

150-225 A models (GX11, GX12, GX21) offer six options: 12, 24, 48, 72, 120 Vdc and 120/240 Vac. 350-1000 A models offer three standard DC coil options: 12, 24, 48 Vdc. All DC coil variants include internal coil suppression — no external diode is needed. PWM variants (GXV600, GXV611) offer Internal PWM and External PWM drives.

How is a GX contactor mounted?

GX contactors are position-independent — they can be mounted in any orientation. Depending on the model, four mount types are available: bottom mount, stand-up, side mount and busbar mount. Stainless-steel mounting inserts ensure years of corrosion-free service in humid and high-vibration applications.

Which standards does the GX series comply with?

Many GX models are cRUus certified (UL Recognition for Canada and the USA). All GX models are RoHS compliant, and CE Mark of Conformity is available for many. Some contact ratings and coil variants may not be UL recognized — a Sensata technical review is recommended based on the application requirement.

Which smart variants exist in the GX series?

Beyond standard NO (Normally Open) models, the GX line includes smart variants: GXNC14 — NC (Normally Closed) contact; GXL14 — Latching, switches state with a coil pulse and holds without coil power; GXSA16 — Current Sensing with overcurrent protection; GXC — CAN-bus digital communication; GXV600/611/VB611 — PWM-driven coil with low holding power.

What advantage do the PWM-coil GXV models offer?

GXV600 and GXV611 use PWM (Pulse Width Modulation) coil drive — full power at pick-up, modulated pulse width during hold to reduce continuous power draw. In always-on EV main contactor and ESS isolation applications this materially lowers annual energy cost. GXV600/611 reach 900 Vdc; GXVB611 reaches 1000 Vdc.

When is the GXL14 latching contactor preferred?

The GXL14 latching contactor changes state on a momentary coil pulse and stays there with no further coil power. This is ideal for passive battery isolation, long-term storage, emergency disconnects and any application where coil power matters. With 350 A continuous and 800 Vdc switching it is widely used in EV and ESS systems.

How does the GXSA16 current-sensing contactor work?

The GXSA16 integrates a current sensor inside the contactor. It continuously measures main-contact current and produces an automatic trip signal once a configurable threshold is exceeded. This collapses the external-sensor-plus-protection-relay-plus-contactor stack into one unit — saving panel space, wiring and commissioning time. With 600 A continuous and 800 Vdc capability it suits main power feeds.

How is coil suppression handled in GX contactors?

All DC coils in GIGAVAC contactors include internal coil suppression to keep EMF within controllable levels — no external diode, snubber or RC network is required. In fact, adding external suppression slows the release time and shortens product life, which can lead to contact welding at low currents because the contactor cannot break the load fast enough. For the rare cases that mandate a parallel diode, contact Sensata technical support for an application review.

What is the key difference between the GX and MX series?

GX and MX share the same ceramic insulation technology but use different fill gases. GX uses a hydrogen-rich fill that supports high-voltage switching up to 800 Vdc. MX uses a nitrogen fill, which trades some voltage capability for higher inrush and overload performance at lower voltages. MX also meets MIL-R-6106 and is engineered specifically for military and heavy-duty applications.

Which GX model should I pick for an EV pre-charge circuit?

EV pre-charge typically needs high inrush (capacitor charging) and low continuous current. For battery packs up to 800 Vdc, GX11 (150 A), GX12 (225 A) or GX14 (350 A) are suitable. For the always-on main contactor, the PWM-coil GXV600/611 offers a low-holding-power advantage. The right pick depends on system voltage, capacitor value, pre-charge time and target inrush — get in touch with IMB Electric for a sizing review.

B2B · PRODUCT SERIES · SENSATA | GIGAVACREF · IMB · SENSATA | GIGAVAC · GX

LIVE

Sensata | Gigavac · PRODUCT SERIES

GX Series — Hermetically Sealed DC Contactors800 Vdc Patented Technology

The GIGAVAC GX series is a field-proven, patented ceramic-insulated hermetic flagship DC contactor family in service since 2002. 26 models deliver 150-1000 A continuous current and switching from 12 to 800 Vdc.

RoHS compliant and mountable in any orientation, GX operates from -55 °C to 85 °C and runs reliably in harsh environments including underwater; cRUus certified.

Beyond standard NO models, the family includes latching, current-sensing, CAN-bus (GXC) and PWM-coil variants — chosen for EV power management, ESS, industrial control and pre-charge circuits.

Electric Vehicles (EV)Energy Storage Systems (ESS)Power ManagementIndustrial Machine ControlForklift & AGVPre-charge CircuitsSolar InverterMilitary / Off-road

SERIES CERTIFICATIONS09APPROVALS

UL1604
IP67
IP69K
SAE J1171
ISO8846
RoHS
cRUus
CE
EPIC®

Certifications vary by model — see the corresponding model datasheet for details.

REFERENCE SPECIMENGX · 01

HERMETICDC CONTACTORSENSATA

Models

33(28+5)

Products

12,144

01Max. Switching Voltage: 800 Vdc
02Continuous Current (GX110): 1000 A
03Inrush Capability: 5000 A
04Operating Temp. (Submersible): -55 … +85 °C

GX Series Hermetic Contactor Models

Sorted by current rating (150A → 1000A)

17 MODELS9,408 PRODUCTS

SHARED IN THIS GROUPVoltage:800 VdcContact Form:SPST-NO

CONFIGURATOR	MODEL↑ current	Continuous Current	Mounting	Coil Options	INRUSH RATING	PDF
	GX11	150 A	Bottom Mount	12/24/48/72/120 Vdc, 120/240 Vac	~3000 A	Datasheet (PDF) — GX11
CONFIGURATOR · GX11
	GX21	150 A	Stand-up Mounting	12/24/48/72/120 Vdc, 120/240 Vac	~3000 A	Datasheet (PDF) — GX21
CONFIGURATOR · GX21
	GX32	150 A	Side Mount	12/24/48/72/120 Vdc, 120/240 Vac	~3000 A	Datasheet (PDF) — GX32
CONFIGURATOR · GX32
	GX52	150 A	Side Mount	12/24/48/72/120 Vdc, 120/240 Vac	~3000 A	Datasheet (PDF) — GX52
CONFIGURATOR · GX52
	GX12	225 A	Bottom Mount	12/24/48/72/120 Vdc, 120/240 Vac	~4000 A	Datasheet (PDF) — GX12
CONFIGURATOR · GX12
	GX22	225 A	Stand-up Mounting	12/24/48/72/120 Vdc, 120/240 Vac	~4000 A	Datasheet (PDF) — GX22
CONFIGURATOR · GX22
	GX14	350 A	Bottom Mount	12/24/48 Vdc	~5000 A	Datasheet (PDF) — GX14
CONFIGURATOR · GX14
	GX23	350 A	Stand-up Mounting	12/24/48 Vdc	~5000 A	Datasheet (PDF) — GX23
CONFIGURATOR · GX23
	GX24	350 A	Stand-up Mounting	12/24/48 Vdc	~5000 A	Datasheet (PDF) — GX24
CONFIGURATOR · GX24
	GX34	350 A	Side Mount	12/24/48 Vdc	~5000 A	Datasheet (PDF) — GX34
CONFIGURATOR · GX34
	GX54	350 A	Side Mount	12/24/48 Vdc	~5000 A	Datasheet (PDF) — GX54
CONFIGURATOR · GX54
	GX16	600 A	Bottom Mount	12/24/48 Vdc	~5000 A	Datasheet (PDF) — GX16
CONFIGURATOR · GX16
	GX26	600 A	Stand-up Mounting	12/24/48 Vdc	~5000 A	Datasheet (PDF) — GX26
CONFIGURATOR · GX26
	GX46	600 A	Bottom Mount	12/24/48 Vdc	~5000 A	Datasheet (PDF) — GX46
CONFIGURATOR · GX46
	GX56	600 A	Side Mount	12/24/48 Vdc	~5000 A	Datasheet (PDF) — GX56
CONFIGURATOR · GX56
	GX66	600 A	Busbar Mounting	12/24/48 Vdc	~5000 A	Datasheet (PDF) — GX66
CONFIGURATOR · GX66
	GX110	1000 A	Bottom Mount	12/24 Vdc	~5000 A	Datasheet (PDF) — GX110
CONFIGURATOR · GX110

Smart & specialty models

11 models · Latching Type DC Contactors · NC Main Contact DC Contactors · CANBUS Communication DC Contactors · Over Current & Current Sensing Smart DC Contactors · High Current & Voltage EV Type DC Contactors · Bi-directional 1000V/500A DC Contactors

Latching Type DC Contactors

1 MODELS576 PRODUCTS

CONFIGURATOR	MODEL	Continuous Current	Voltage	Contact Form	Mounting	Coil Options	Feature	PDF
	GXL14	350 A	800 Vdc	SPST-NO	Bottom Mount	12/24 Vdc	Latching	Datasheet (PDF) — GXL14
CONFIGURATOR · GXL14

NC Main Contact DC Contactors

1 MODELS640 PRODUCTS

CONFIGURATOR	MODEL	Continuous Current	Voltage	Contact Form	Mounting	Coil Options	Feature	PDF
	GXNC14	350 A	800 Vdc	SPST-NC	Bottom Mount	12/24/48 Vdc	Normally Closed	Datasheet (PDF) — GXNC14
CONFIGURATOR · GXNC14

CANBUS Communication DC Contactors

2 MODELS432 PRODUCTS

SHARED IN THIS GROUPVoltage:800 VdcContact Form:SPST-NOMounting:Bottom Mount

CONFIGURATOR	MODEL	Continuous Current	Coil Options	Feature	PDF
	GXC15	350 A	12/24 Vdc	CAN-Bus	Datasheet (PDF) — GXC15
CONFIGURATOR · GXC15
	GXC16	600 A	12/24 Vdc	CAN-Bus	Datasheet (PDF) — GXC16
CONFIGURATOR · GXC16

Over Current & Current Sensing Smart DC Contactors

4 MODELS768 PRODUCTS

SHARED IN THIS GROUPVoltage:800 VdcContact Form:SPST-NOMounting:Bottom Mount

CONFIGURATOR	MODEL	Continuous Current	Coil Options	Feature	PDF
	GXSA15	400 A	12/24 Vdc	Over Current Contactor	Datasheet (PDF) — GXSA15
CONFIGURATOR · GXSA15
	GXSA16	600 A	12/24 Vdc	Over Current Contactor	Datasheet (PDF) — GXSA16
CONFIGURATOR · GXSA16
	GXSB15	400 A	12/24 Vdc	Current Sensing Contactor	Datasheet (PDF) — GXSB15
CONFIGURATOR · GXSB15
	GXSB16	600 A	12/24 Vdc	Current Sensing Contactor	Datasheet (PDF) — GXSB16
CONFIGURATOR · GXSB16

High Current & Voltage EV Type DC Contactors

2 MODELS192 PRODUCTS

SHARED IN THIS GROUPVoltage:900 VdcContact Form:SPST-NOMounting:Bottom Mount

CONFIGURATOR	MODEL	Continuous Current	Coil Options	Feature	PDF
	GXV600	600 A	12/24 Vdc	Kompakt EV (PWM)	Datasheet (PDF) — GXV600
CONFIGURATOR · GXV600
	GXV611	600 A	12/24 Vdc	Kompakt EV (PWM)	Datasheet (PDF) — GXV611
CONFIGURATOR · GXV611 1Contact Configuration:NOSPST-NO (Normally Open)2Continuous Current:600600 A3Frame / Mounting Type:GXV611GXV611 — Bottom Mount (PWM 600A) Coil codes: B (12 Vdc), C (24 Vdc), F (48 Vdc), H (72 Vdc), J (120 Vdc), K (120 Vac), L (240 Vac) – all include Internal Coil Suppression as standard. S and T are Low-Power versions of 12 Vdc and 24 Vdc with Internal Coil Suppression. M and P apply only to GXV600 / GXV611 (M = 12/24 Vdc Internal PWM, P = 12/24 Vdc External PWM). GXL14 supports only B and C coils. GXVB611 supports only C (24 Vdc). GENERATED CODE 3/9 · 33% GXV611···· MATCHED MODEL GXV611

Bi-directional 1000V/500A DC Contactors

1 MODELS128 PRODUCTS

CONFIGURATOR	MODEL	Continuous Current	Contact Form	Mounting	Coil Options	Feature	PDF
	GXVB611	600 A	SPST-NO	Bottom Mount	24 Vdc — Dual Coil	Bidirectional (Çift Yönlü)	Datasheet (PDF) — GXVB611
CONFIGURATOR · GXVB611

Accessories

connectors, interposer plates and adapters (non-configurable)

5 MODELS

MODEL	PDF
0544	Datasheet (PDF) — 0544
0697	Datasheet (PDF) — 0697
0856	Datasheet (PDF) — 0856
0857	Datasheet (PDF) — 0857
1006	Datasheet (PDF) — 1006

TECHNICAL DIFFERENTIATORS

Why GX Series?

05 · CATEGORIES

Wide Current Range

150 A to 1000 A continuous contact current
Single supplier for every system size from 12 V to 800 V.
Inrush capability up to 5000 A
Safe response to inrush surges in EV pre-charge and ESS.

Hermetic Seal

Hermetic seal built on patented ceramic insulation technology
High-temperature tolerance, stable operation in harsh environments — including underwater — and long life.
Wide operating range from -55 °C to 85 °C
Consistent performance in extreme cold and heat (off-road, military).

Position-independent Mounting

Bottom · Stand-up · Side · Busbar mount options
26 models cover virtually any panel architecture.
Mount in any desired orientation
Flexible panel design, fast install, optimised footprint.

Built-in Coil Suppression

Internal coil suppression on every DC-coil variant
No external diode/snubber needed — shorter install time, lower BOM.
Stainless-steel hardware and mounting inserts
Years of corrosion-free service — ideal for marine and humid environments.

Smart Variant Portfolio

Latching (GXL), current sensing (GXSA), CAN-bus (GXC), PWM coil (GXV)
BMS integration, current protection and digital comms — all from one family.
NO (Normally Open) and NC (Normally Closed) options
Safe break or make architecture, depending on circuit topology.

DATASHEET · GUIDE · APPLICATION NOTE

GX Series — Technical Resources

17 · FILES

Datasheets

GX11 / GX21 DatasheetSOON
GX12 DatasheetSOON
GX14 / GX23 / GX34 DatasheetSOON
GX16 / GX26 / GX66 DatasheetSOON
GX110 DatasheetSOON
GXV600 / GXV611 / GXVB611 DatasheetSOON
GXL14 Latching DatasheetSOON
GXNC14 Normally Closed DatasheetSOON
GXSA16 Current Sensing DatasheetSOON

Selection Guides

GIGAVAC Selection Guide (2026)SOON
Sensata EL Contactor Portfolio Brochure (2025)SOON

Application Notes

FREQUENTLY ASKED QUESTIONS

About the GX series

14/14

+8 MORE QUESTIONSALL QUESTIONS

RELATED INSIGHTS · GXREF · IMB · PUB · 08 ENTRIES

LIVE

RELATED INSIGHTS

Go deeper

08 ENTRIES

// end of index · 08 / 08

GX Series — Hermetically Sealed DC Contactors800 Vdc Patented Technology

Smart & specialty models

Why GX Series?

Wide Current Range

Hermetic Seal

Position-independent Mounting

Built-in Coil Suppression

Smart Variant Portfolio

GX Series — Technical Resources

Datasheets

Selection Guides

Application Notes

About the GX series

Go deeper

GIGAVAC Akıllı Kontaktör Serileri ve GigaFuse

GIGAVAC (Sensata) CANBus Haberleşme Protokollü DC Kontaktör (MXC/GXC Serisi)

DC Kontaktörlerde Kısmi/Tam Kontak Yapışması Durumu

Kontaktör Bobin Ekomizeri Nedir?

Ekonomizer Çalışma Prensibi

Elektrikli Araçlar için Preşarj Devresi Tasarımı

Hibrit ve EV Elektrikli Araç Uygulamalarında Preşarj Hesabı

Kontaktör ve Yüksek Voltaj Rölesi Seçimi

GX Series — Hermetically Sealed DC Contactors800 Vdc Patented Technology

Why GX Series?

Wide Current Range

Hermetic Seal

Position-independent Mounting

Built-in Coil Suppression

Smart Variant Portfolio

GX Series — Technical Resources

Datasheets

Selection Guides

Application Notes

About the GX series

01What is the GX series and which applications is it designed for?

02What is the maximum operating voltage of the GX series?

03What is the current range of the GX series?

04In which environmental conditions do GX contactors operate?

05Which coil control voltages does the GX series offer?

06How is a GX contactor mounted?

Go deeper

GIGAVAC Akıllı Kontaktör Serileri ve GigaFuse

GIGAVAC (Sensata) CANBus Haberleşme Protokollü DC Kontaktör (MXC/GXC Serisi)

DC Kontaktörlerde Kısmi/Tam Kontak Yapışması Durumu

Kontaktör Bobin Ekomizeri Nedir?

Ekonomizer Çalışma Prensibi

Elektrikli Araçlar için Preşarj Devresi Tasarımı

Hibrit ve EV Elektrikli Araç Uygulamalarında Preşarj Hesabı

Kontaktör ve Yüksek Voltaj Rölesi Seçimi