---
product_id: 488443205
title: "WestinghouseUL 489 AC Miniature Circuit Breaker, 5 Amp, Single Pole, C Curve, 10kA, 277V AC, 60V DC, Non-Polarized, UL Listed, DIN Rail Breaker with Thermal Magnetic Trip"
brand: "westinghouse"
price: "₩73219"
currency: KRW
in_stock: true
reviews_count: 8
url: https://www.desertcart.kr/products/488443205-westinghouseul-489-ac-miniature-circuit-breaker-5-amp-single-pole
store_origin: KR
region: South Korea
---

# 5 Amp Power 277V AC Ready 10kA Protection WestinghouseUL 489 AC Miniature Circuit Breaker, 5 Amp, Single Pole, C Curve, 10kA, 277V AC, 60V DC, Non-Polarized, UL Listed, DIN Rail Breaker with Thermal Magnetic Trip

**Brand:** westinghouse
**Price:** ₩73219
**Availability:** ✅ In Stock

## Summary

> 🔧 Power Up Your Protection!

## Quick Answers

- **What is this?** WestinghouseUL 489 AC Miniature Circuit Breaker, 5 Amp, Single Pole, C Curve, 10kA, 277V AC, 60V DC, Non-Polarized, UL Listed, DIN Rail Breaker with Thermal Magnetic Trip by westinghouse
- **How much does it cost?** ₩73219 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/488443205-westinghouseul-489-ac-miniature-circuit-breaker-5-amp-single-pole)

## Best For

- westinghouse enthusiasts

## Why This Product

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

## Key Features

- • **Safety First:** UL489 Certified for ultimate peace of mind.
- • **Rapid Response:** Interrupts within the first half AC cycle.
- • **Quick Installation:** Easily snaps onto 35mm DIN Rails.
- • **Reliable Performance:** Designed for both AC and DC circuits.
- • **Versatile Applications:** Perfect for HVAC, PLCs, and more.

## Overview

The Westinghouse UL 489 AC Miniature Circuit Breaker is a robust 5 Amp, single pole device designed for superior thermal overload and short circuit protection. With a C Curve rating and a 10kA interrupting capacity, it meets stringent UL489 standards, making it ideal for various applications including HVAC systems and motor control circuits. Its quick installation on DIN rails and compatibility with both AC and DC circuits ensure reliability and efficiency in any setup.

## Description

WestinghouseUL 489 AC Miniature Circuit Breaker, 5 Amp, Single Pole, C Curve, 10kA, 277V AC, 60V DC, Non-Polarized, UL Listed, DIN Rail Breaker with Thermal Magnetic Trip

## Features

- UL489 Certified: Meets National Electrical Code standards to serve as primary thermal overload and short circuit protection. Approved by Underwriters Laboratories for Branch Circuit protection in US and Canada. UL File: E517946
- Standard Installation: Mini Circuit Breaker snaps on 35mm DIN Rails or may be directly mounted to control panels. Typically used in motor control circuits, HVAC / HVACR Equipment, input output module protection for programmable logical controllers (PLC) and distributed control systems (DCS), relays and instrumentation among other applications.
- Specifications: 5 Amp 1 pole C Trip Curve MCB rated for 10kAIC 277V AC. Direct current rating is 60V DC. Westinghouse Model Number: WMBB1C05
- Current Limiting: Westinghouse MCBs are designed to interrupt within the first half AC cycle compared to 1 to 2 AC cycles for conventional breakers
- What’s Included: Single Pole Miniature Circuit Breaker only. DIN Rail and Installation Kit sold separately

## Images

![WestinghouseUL 489 AC Miniature Circuit Breaker, 5 Amp, Single Pole, C Curve, 10kA, 277V AC, 60V DC, Non-Polarized, UL Listed, DIN Rail Breaker with Thermal Magnetic Trip - Image 1](https://m.media-amazon.com/images/I/61rZT1L22yL.jpg)
![WestinghouseUL 489 AC Miniature Circuit Breaker, 5 Amp, Single Pole, C Curve, 10kA, 277V AC, 60V DC, Non-Polarized, UL Listed, DIN Rail Breaker with Thermal Magnetic Trip - Image 2](https://m.media-amazon.com/images/I/61fdOzIsVqL.jpg)
![WestinghouseUL 489 AC Miniature Circuit Breaker, 5 Amp, Single Pole, C Curve, 10kA, 277V AC, 60V DC, Non-Polarized, UL Listed, DIN Rail Breaker with Thermal Magnetic Trip - Image 3](https://m.media-amazon.com/images/I/812jz02NJ4L.jpg)
![WestinghouseUL 489 AC Miniature Circuit Breaker, 5 Amp, Single Pole, C Curve, 10kA, 277V AC, 60V DC, Non-Polarized, UL Listed, DIN Rail Breaker with Thermal Magnetic Trip - Image 4](https://m.media-amazon.com/images/I/71nN+uEtNqL.jpg)
![WestinghouseUL 489 AC Miniature Circuit Breaker, 5 Amp, Single Pole, C Curve, 10kA, 277V AC, 60V DC, Non-Polarized, UL Listed, DIN Rail Breaker with Thermal Magnetic Trip - Image 5](https://m.media-amazon.com/images/I/81+oIMiAgIL.jpg)

## Available Options

This product comes in different **Material Type, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Mini Breaker for Our Van
  

*by A***C on Reviewed in the United States on May 19, 2023*

Bought this as our main breaker in our van. Looks well built and functions very well, one is for our AC and another for Shore connection breaker. A little pricey compare for others but it’s worth it.Like from another review this is much taller coz of the plastic that divide on top and bottom where the wires go. I see that as added protection yet it did gave me hard time during install, tight fit on the box.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    A compact solution to my emergency-generator-to-house interface needs.
  

*by J***Z on Reviewed in the United States on January 1, 2023*

These seemingly well-made Westinghouse mini-breakers provide a compact solution to my need to safely interface a 3.5 kW emergency generator with four electrically-independent switch-plus-GFCI outlets in my basement. I particularly appreciate the dual-connection terminals on each end, which have allowed me to power two current monitors, as well as connect primary 15 amp loads, and still meet code. See the wiring photo.However, upon installing these Westinghouse mini-breakers for the first time on my breaker box’s din rail, I couldn’t help noticing that only three of these breakers will fit, as is apparent in a second photo. (The box manufacturer claims room for four mini-breakers.) The positioning of plastic posts in the box prevents these particular breakers from occupying the extremes of the din rail, as shown in the third photo. No issue for me, given that I only need two breakers. Moreover, I find no fault with Westinghouse in that regard. I fault the manufacturer of the somewhat-cramped LeMotech breaker box (which I’ve reviewed separately on Amazon), so I’ll not deduct a rating star for that reason.I have not tested — and probably cannot accurately test — the C-curve trip points of these UL-rated and CE-rated breakers. Therefore, I cannot comment on their primary functionality. However, if I discover functional problems during use I’ll likely revisit and down-rate this review. For now, however, I can’t justifiably deduct stars.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    very good
  

*by 1***W on Reviewed in the United States on November 3, 2022*

Item high-standard. Notably swift dispatch. The packaging was notably pretty. Would buy from again. Immensely pleased. A+

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-03-08*