Sensata Gigavac G43C332

Sensata Gigavac G43C332 is a 10kV SPDT High Voltage Relay from the G43C series, designed for high-voltage switching, RF-related routing, test equipment, and compact multi-relay assemblies. This High Voltage Relay provides a single-pole double-throw contact form, 25A contact rating, 26.5VDC coil, tungsten contact material, wire lead termination, and chassis mounting. Unlike the GV and P series power contactors, G43C332 is best positioned as a high-voltage relay for signal routing, load switching, and controlled transfer between two high-voltage paths.

The G43C series is built for applications where voltage isolation, compact size, and fast switching are more important than large traction-style current ratings. G43C332 supports switching up to 10000VAC or 10000VDC maximum according to distributor data. The High Voltage Relay uses durable tungsten contacts, which are well suited for hot load switching, and a vacuum dielectric design that helps with arc control when opening under load.

Product Positioning

G43C332 should be positioned as a 10kV SPDT High Voltage Relay for test, measurement, RF, and specialized high-voltage control systems. It is not a battery disconnect contactor and should not be described as an EV or ESS main power contactor. Its value is in compact high-voltage transfer switching, where one common contact must switch between normally closed and normally open paths.

The SPDT configuration makes this High Voltage Relay useful for circuit selection, polarity routing, discharge path selection, source/load transfer, and high-voltage instrumentation switching. In systems where a controller needs to route a high-voltage signal or power path between two states, G43C332 provides a compact relay solution with a 26.5VDC coil and 10ms typical operate and release timing.

Key Specifications

• Manufacturer series: Sensata Gigavac G43C
• Part number: G43C332
• Product type: High Voltage Relay
• Contact form: SPDT, 1 Form C
• Contact rating: 25A
• Maximum switching voltage: 10000VAC / 10000VDC
• Coil voltage: 26.5VDC
• Coil current: approximately 91.4mA according to distributor data
• Coil power: approximately 2.4W according to distributor data
• Coil resistance: approximately 290 ohms according to distributor data
• Contact material: tungsten
• Termination style: wire leads / bus wire
• Mounting type: chassis mount, three-hole flange style referenced by distributors
• Typical operate time: approximately 10ms
• Typical release time: approximately 10ms
• Operating temperature range: -55°C to +125°C

Features and Benefits

The main advantage of G43C332 is its SPDT high-voltage switching structure. A single High Voltage Relay can transfer the common terminal between two circuit paths, which can reduce component count compared with using multiple separate normally open relays. This is helpful in test fixtures, high-voltage measurement systems, RF routing designs, and compact control panels.

The 10kV rating makes G43C332 suitable for elevated-voltage circuits that are far beyond the range of ordinary electromechanical relays. The High Voltage Relay is designed for applications where insulation performance and controlled switching behavior are critical. Its tungsten contacts support hot load switching, while the vacuum dielectric helps manage arcing during switching events.

The slim G43C package is useful in multi-relay equipment where several high-voltage channels must fit into a limited enclosure. Engineers can use this High Voltage Relay in relay matrices, source selectors, test stands, laboratory instruments, and specialized power control equipment. Chassis mounting and wire lead termination also provide flexible installation in custom assemblies.

The 26.5VDC coil configuration is common in aerospace-style, defense, and specialized industrial control systems. The coil should be matched to the available control supply, and the driver circuit should be designed for the coil current, operate voltage, release voltage, and any required suppression strategy.

Applications

G43C332 is especially suitable for high-voltage test and measurement systems. In a test fixture, this High Voltage Relay can select between sources, route a high-voltage output, connect a measurement path, or switch between test states. The SPDT contact form allows one relay to perform transfer switching where a normally open and normally closed path are both useful.

The relay can also be used in RF-related high-voltage equipment, capacitor test systems, insulation test instruments, power supply routing, pulse circuits, and laboratory switching panels. Because the G43C design is compact and RF efficient, it is useful where high-voltage switching must be combined with careful layout and limited space.

In industrial control equipment, G43C332 may support high-voltage source selection, discharge routing, safety interlock switching, or controlled transfer between operating modes. The final circuit should be reviewed for voltage, current, load type, switching frequency, insulation spacing, and protection requirements before production use.

Selection Guide

Before selecting G43C332, confirm that the application needs an SPDT High Voltage Relay rather than a normally open contactor. The SPDT contact form is valuable when the circuit must transfer between two paths, but it may be unnecessary for simple on/off isolation. If the design only needs single-pole normally open switching, another relay or contactor configuration may be more suitable.

Engineers should verify maximum voltage, steady current, hot switching current, load type, duty cycle, and spacing requirements. Although distributor data lists up to 10kV AC/DC switching and 25A contact rating, real application limits depend on load characteristics, frequency, wiring layout, altitude, contamination level, and safety margin.

The 26.5VDC coil should also be checked. The control system must provide enough voltage and current for reliable operation while allowing proper release when the coil is de-energized. If the system uses 12VDC, 24VDC, or another control voltage, a different coil option or related relay model may be required.

FAQ

What is G43C332 used for?

G43C332 is used for high-voltage transfer switching, test equipment, RF-related routing, source selection, and specialized high-voltage control circuits.

Is G43C332 a High Voltage Relay?

Yes. G43C332 is a Sensata Gigavac G43C series High Voltage Relay with SPDT contact form and 10kV AC/DC switching capability.

What coil voltage does G43C332 use?

G43C332 uses a 26.5VDC coil. Distributor data lists approximately 91.4mA coil current and 2.4W coil power.

What does SPDT mean for this relay?

SPDT means single-pole double-throw. This High Voltage Relay can transfer one common contact between a normally closed and normally open path.

How is G43C332 different from a DC contactor?

G43C332 is a high-voltage relay for SPDT transfer switching, while DC contactors are usually used for higher-current on/off power isolation in battery, charging, or distribution systems.

Conclusion

G43C332 is a 10kV SPDT High Voltage Relay for high-voltage routing, test equipment, RF-related systems, and compact transfer switching assemblies. With its Sensata Gigavac G43C design, 25A contact rating, 26.5VDC coil, tungsten contacts, wire lead termination, chassis mounting, and fast 10ms switching behavior, it is a strong option for specialized equipment that needs reliable high-voltage transfer control rather than a conventional DC power contactor.