# ABB APCQ-R Detuned Automatic Capacitor Bank

> reactive-compensation-bank - Low-voltage automatic power-factor-correction bank family for industrial and commercial networks, including harmonic-polluted applications.

**Voltformer canonical:** https://voltformer.com/product/abb-apcq-r-detuned-automatic-capacitor-bank - markdown version: https://voltformer.com/product/abb-apcq-r-detuned-automatic-capacitor-bank.md

## Overview

- **Brand:** ABB / Hitachi Energy
- **Product family:** APCQ low-voltage automatic capacitor banks
- **Category:** Grid Equipment & Power Quality / power-quality-and-reactive-compensation

## Manufacturer-stated technical envelope

- **System voltage:** 0.4–0.4 kV
- **Reactive rating:** ABB identifies APCQ-R as the detuned-reactor cabinet for harmonic-polluted networks. Select voltage, kVAr steps, detuning, controller and protection from the current ABB order-code design.
- **Switching:** APCQ-L wall-mounted compact cubicle; APCQ-M free-standing cabinet; APCQ-R free-standing detuned-reactor cabinet
- **Harmonic mitigation:** APCQ-R detuned reactors for harmonic-polluted networks; Published capability for up to 8% LV-bus voltage distortion
- **Applications:** Commercial buildings; Mining; Steel, chemical, cement and manufacturing

## Standards

- IEC 61921 / IEC 60831 selection basis - confirm selected APCQ configuration

## Official sources

- https://new.abb.com/news/detail/50883/abb-launches-a-new-range-of-low-voltage-capacitor-banks-for-power-factor-correction

- **Source scope:** manufacturer-family
- **Last reviewed:** 2026-09-13

Manufacturer portfolio/family source. Confirm the exact order code, guaranteed ratings and project-specific options against the current OEM datasheet before procurement or an SLD study.

The stated values are family or catalogue-option limits. Select the exact order code and verify project-specific duties before procurement or release of an SLD design.