---
product_id: 49762987
title: "SHAMROCK CONTROLS QY18U220B0 Circuit Breaker, QY Series, UL489A, Curve U2, DC Voltage, 1 Pole, 20 amp"
brand: "shamrock controls"
price: "$10.84"
currency: USD
in_stock: true
category: "Misc."
url: https://www.desertcart.us/products/49762987-shamrock-controls-qy18u220b0-circuit-breaker-qy-series-ul489a-curve-u2
store_origin: US
region: United States of America
---

# SHAMROCK CONTROLS QY18U220B0 Circuit Breaker, QY Series, UL489A, Curve U2, DC Voltage, 1 Pole, 20 amp

**Brand:** shamrock controls
**Price:** $10.84
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** SHAMROCK CONTROLS QY18U220B0 Circuit Breaker, QY Series, UL489A, Curve U2, DC Voltage, 1 Pole, 20 amp by shamrock controls
- **How much does it cost?** $10.84 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/49762987-shamrock-controls-qy18u220b0-circuit-breaker-qy-series-ul489a-curve-u2)

## Best For

- shamrock controls enthusiasts

## Why This Product

- Trusted shamrock controls brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

• Circuit Breaker size has a compact 13mm/module width  • Comes with Hydraulic-magnetic technology  • The trip point is unaffected by the temperature variations in the environment  • The circuit breaker holds 100% of the rated current independent of ambient temperature  • There is immediate resetting after a trip occurs  • Rated Interrupting Capacity - 10kA  • Termination - Box Terminal (Compression Terminal), Plug in Terminal  • Specifications met are UL489A Listed, VDE (EN 60947-2), CE   The circuit breaker has hydraulic-magnetic technology which ensures reduced nuisance tripping with temperature variance. After tripping occurs, the circuit breaker may be re-closed immediately since no cooling down time is necessary. It also has different mounting options for quick installation - DIN Rail, Surface Clip, and Dual Mounting (DIN & Mini) and compact size.

## Features

- QY Series Circuit Breaker
- Number of Poles - 1
- Rated Amperage - 20 Amp, Rated Voltage - 80/250 VDC
- Curve U2 and UL 489A Listed
- Mounting Options - Mini Rail, Din Rail, Surface Clip, QPI Plug in System

## Images

![SHAMROCK CONTROLS QY18U220B0 Circuit Breaker, QY Series, UL489A, Curve U2, DC Voltage, 1 Pole, 20 amp - Image 1](https://images-na.ssl-images-amazon.com/images/I/415XQ3%2BfqxL.jpg)
![SHAMROCK CONTROLS QY18U220B0 Circuit Breaker, QY Series, UL489A, Curve U2, DC Voltage, 1 Pole, 20 amp - Image 2](https://images-na.ssl-images-amazon.com/images/I/31lLn0OpF2L.jpg)
![SHAMROCK CONTROLS QY18U220B0 Circuit Breaker, QY Series, UL489A, Curve U2, DC Voltage, 1 Pole, 20 amp - Image 3](https://images-na.ssl-images-amazon.com/images/I/41VeradlomL.jpg)
![SHAMROCK CONTROLS QY18U220B0 Circuit Breaker, QY Series, UL489A, Curve U2, DC Voltage, 1 Pole, 20 amp - Image 4](https://images-na.ssl-images-amazon.com/images/I/31x5rajOTjL.jpg)
![SHAMROCK CONTROLS QY18U220B0 Circuit Breaker, QY Series, UL489A, Curve U2, DC Voltage, 1 Pole, 20 amp - Image 5](https://images-na.ssl-images-amazon.com/images/I/31CotysQ8RL.jpg)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-28*