---
lang: "en"
title: "QI-50-V-485 Current Transformer"
sku: "QI-50-V-485"
canonical_url: "https://shop.marcomweb.it/en/voltage-current-phase/qi-50-v-485-current-transformer"
brand: "MARCOM S.r.l."
end_of_life: "false"
---

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QI-50-V-485: TRMS AC/DC Current Transformer, 50A, 0-10V Output and RS485 Modbus

TRMS AC/DC Current Transformer, 50A, 0-10V Output and RS485 Modbus

The QI-50-V-485 is a DC and AC current transformer, galvanically isolated from the measurement circuit.

The device is functionally and aesthetically similar to a standard active CT, but capable of measuring both the DC and AC RMS components.

The transformer is equipped with an RS485 serial output for Modbus RTU connection, through which the span and zero can be freely configured.

AC/DC RMS Current Transformer, 0…50 A, analog and serial output, scale settable via Dip-Switch or RS485, DIN rail mounting.

## Technical Specifications

- POWER SUPPLY: 12…30Vdc, Protections for reverse polarity and overtemperature
- CURRENT DRAW: Maximum 20mA
- PROTECTION RATING: IP20
- ACCURACY CLASS: 0.5% F.S.
- RESOLUTION: 12 bit
- TEMPERATURE COEFFICIENT: < 200 ppm/°C
- RESPONSE SPEED: 1000 ms
- OPERATING TEMPERATURE: -15…+65°C
- MEASUREMENT TYPE: TRMS (unipolar)
- RANGES: 50 Arms or 25 Arms settable by dip-switch, bipolar (+/- 50A DC or +/-25A DC), custom scales settable via RS485
- CREST FACTOR: 2
- BANDWIDTH: DC or 20…2000 Hz
- ISOLATION: 3 kV on bare cable
- OVERLOAD: 2kA impulsive, 300A continuous
- OUTPUT: 0…10V and RS485

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Source: https://shop.marcomweb.it/en/voltage-current-phase/qi-50-v-485-current-transformer

MARCOM S.r.l. — a trusted supplier for industrial automation and building automation.