HARDWARE / PRODUCTUpdated 24 Jul 2026

Voltage Converter PN120/28

Glavkosmos
Voltage Converter PN120/28

The Voltage Converter PN120/28 is a current and voltage regulator designed for spacecraft onboard equipment, converting 110-180 V DC to 28.5 V DC.

Key figurescomparable across the catalogue

Mass
15.5 kg
Power
1,500 W
Largest dimension
340 mm
Design life
15 years
Lead time
12 months

Normalised to common units so this product can be compared with others in its category. The supplier's own wording is below.

As published by the supplier

Purpose
Designed for manned and cargo spacecraft, satellites.
Year of release
2000
Design life
15 years
Lead time
12 months
Flight qualification of the product
Yes
Brief history of flight qualification
Is operated as part of the electric power supply system of the Russian segment of ISS.
Possibility to adapt the product to customer requirements
Yes
Resistance to ionizing radiation of outer space
4.5 krad
Supply voltage (DC)
110-180 V
Output voltage (DC)
28.5 V
Power
1.5 kW
Efficiency
92%
Setup
Pressurized
Mass
15.5 kg
Dimensions
340×250×290 mm

About

The Voltage Converter PN120/28 is a current and voltage regulator specifically designed to provide electricity for manned and cargo spacecraft and satellites. It converts an input voltage of 110-180 V DC to an output voltage of 28.5 V DC, delivering 1.5 kW of power with an efficiency of 92%. The unit is designed for pressurized setup and has a guaranteed service life of 15 years. It has a flight qualification, having been operated as part of the electric power supply system of the Russian segment of the International Space Station (ISS). The product was released in 2000 and can be adapted to customer requirements, with the possibility to build converters with other input/output voltage values based on this design. The setup includes five power cells, one control module, one power module, and one telemetry module.

Documentation

No public datasheet yet — request the datasheet / ICD from the supplier.

Source: trade.glavkosmos.com ↗

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