---
title: "HST - Power collection - GRU"
canonical: "/hst-power-collection-gru"
published: 2026-10-12
---

# HST - Power collection - GRU

## Frame

## Frame

**Rail**

**HST**

**Power collection**

**Pantographs and strips**

**GRU**

**Roof disconnectors**

**switches**

**safety sequence**

## Frame

### GRU O.N.ETM

##### One-fit-all Ground Return Unit O.N.E TM

##### GRU O.N.E is our featured earthing system for locomotives, XMUs, high-speed, and coaches. Combining 100+ years of return experience from our legacy brands, this latest development features improvements in all areas that matter: interface, weight and maintenance.

##### Its innovative design and use of material ensure safe operation and easy integration, which is available for new projects as well as retrofit of existing fleets.

###### POWER COLLECTION

##### GRU O.N.ETM

**Customer benefits**

### GRU brushes

##### Ground Return Unit brushes

##### Our pressed-to-size brushes come in over 4,500 different varieties, ensuring you find the right one for your application. Our brushes can be integrated into a ready-for-use maintenance kit, including fixations and O-rings for GRU overhaul.

###### POWER COLLECTION

##### GRU brushes

**Customer benefits**

**Video**

**GRU O.N.E**

**GRU brushes**

## Frame