3KV SSR

$53. Double yikes.

Industrial engineers justify this component cost across several high-performance and safety-critical applications:

1. Automated Test Equipment (ATE)The Use Case: Testing wide-bandgap (GaN and SiC) power semiconductors, high-voltage circuits, and performance boards.The Justification: Test cycles require rapid switching to process thousands of chips efficiently. The G3VH boasts a lightning-fast turn-on time of 1–2 ms and a turn-off time of 0.2 ms. This dramatically shortens inspection time and accelerates production throughput.

1. High-Voltage Battery Management Systems (BMS)The Use Case: Electric vehicles (EVs) and heavy industrial equipment moving toward 800V or 1,000V+ architectures.The Justification: Traditional mechanical reed relays are bulky and suffer from mechanical wear. The G3VH offers infinite life cycles (no physical moving contacts), reduces the overall weight of the BMS board, and uses very low on-resistance to prevent thermal waste.

2. Energy Storage Systems (ESS) & Ground Fault DetectionThe Use Case: Continuous safety and isolation monitoring in large-scale solar arrays, wind-power generators, and industrial grid batteries.The Justification: To intercept dangerous ground faults instantly, the system requires extreme thermal resilience and high dV/dt (voltage change over time) tolerance. The G3VH features a high dielectric strength of 5,000 Vrms between input and output, guaranteeing that high-voltage spikes will not blow out the low-voltage control logic.

1. Industrial Motor Drives & AutomationThe Use Case: Managing heavy machinery, industrial drives, and factory automation setups.The Justification: Power systems are adopting increased bus voltages to maximize energy efficiency. High voltage allows engineers to leverage smaller, lighter wiring systems. The G3VH handles up to a 900 mA transient in-rush current, meaning it won't fry when heavy motors or inductive loads initial spike.

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Thanks for another educational topic post.

Indeed. Ambient operating temperature is down to -40°C "with no icing or condensation". I should think not with terminals carrying up to 3.3kV only 5mm apart!

It's sensitive to static too, and there's an interesting translation (from Japanese to English?) in the "Precautions" section: "Furthermore, prevent the devices from being destructed against static electricity for baking of it."

I might need something like that, but I can make my own from a PV opto and a fet or two.

John Larkin Highland Tech Glen Canyon Design Center Lunatic Fringe Electronics