Atomic Machines Exited Stealth With $250 Million

The company has unveiled a new high-speed power protection switch for AI data centers after six years in development.

Updated on Oct. 7, 2026 in Semiconductors

Isometric editorial illustration of a sleek industrial power switch with metallic cooling fins, representing advanced data center energy protection technology. — Atomic Machines has exited stealth mode with $250 million in funding and a new high-speed switch designed to protect AI data centers from energy surges. AI Illustration. Upload story photo >

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Atomic Machines has emerged from six years of stealth operations with $250 million in total funding. The startup launched its inaugural product, the PrimeSwitch, which is designed to protect AI data centers from destructive high-voltage energy faults.

Why it matters

The development addresses critical infrastructure risks in high-power AI data centers where energy surges can cause significant damage. By providing faster fault protection, the technology aims to improve the reliability and safety of massive computing clusters.

The PrimeSwitch PS-150 measures 9.5mm wide and 3mm thick while carrying 150 amps of continuous current. It is capable of opening in 50 microseconds, providing speed that is 1,000 times faster than conventional contactors.

The players

Atomic Machines

A semiconductor startup based in the Bay Area that uses AI-driven manufacturing to develop advanced power protection hardware.

Open Compute Project

An industry organization that shares data center technology designs to foster collaboration and innovation across the global computing ecosystem.

The details

Atomic Machines utilizes a proprietary system called the Matter Compiler to build devices without the use of molds or fixed tooling. The manufacturing process employs AI to run real-time experiments on hardware, allowing the system to measure and correct production steps as they occur.

October 7, 2026: Atomic Machines announced its launch out of stealth mode.
October 12 to 15, 2026: The company will demonstrate the PrimeSwitch at the Open Compute Project Global Summit.

Roadmap

This launch represents a broader shift toward specialized hardware components engineered specifically for the extreme power requirements of modern AI data centers. It marks a transition away from reliance on legacy mechanical contactors toward high-speed, AI-manufactured protection devices.

For data center operators, the immediate impact involves an evaluation of whether this technology can reduce equipment failure rates caused by voltage faults. Current testing is limited to early-access customers, with broader enterprise availability pending successful performance validation.

The takeaway

The move from traditional mechanical tooling to AI-corrected manufacturing signals an increased focus on precision in electrical safety components. Readers should monitor whether this automated manufacturing approach significantly lowers production costs for specialized hardware as it scales.

What happens next

Atomic Machines will hold a public demonstration of the PrimeSwitch technology at the Open Compute Project Global Summit in San Jose from October 12 to 15, 2026.