The Rubicon Space Systems 5N High Throughput (HT) Thruster is designed for space applications.

The thruster's design enables a high throughput of propellant and long firing times. It shares much of the same components and design as the 5N LT thruster, but the reactor is upgraded with ultra-high-temperature materials.

Rubicon Space Systems is now on pace to complete flight qualification of the 5N HT thruster in mid-2024 and a target throughput of >100kg. Specific Impulse (Isp) on an engineering development unit (EDU) was measured at >260s. The first 5N HT thrusters will be assembled in late 2023 with the qualification campaign expected to be in mid-2024.