> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# 3A Panel Mount Circuit Breaker (Resettable fuse)

**Type:** Product page · **SKU:** AS5503 · **Brand:** [Core Electronics](https://core-electronics.com.au/brands/core-electronics-australia) · **GTIN:** 9321758021712
**Page:** https://core-electronics.com.au/3a-panel-mount-circuit-breaker-resettable-fuse.html ([markdown](https://core-electronics.com.au/3a-panel-mount-circuit-breaker-resettable-fuse.html.md))

This 3A panel mount push button single pole circuit breaker uses a snap acting bimetal element to sense current overload.

## Pricing

- **Price:** $10.95 (inc GST) — $9.95 AUD, exc GST
- **Quantity discounts:** 10+ $9.55 (exc GST) · 25+ $9.25 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 4 today, and up to 300 more in 2–6 days.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=AS5503:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/AS5503:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

This 3A panel mount push button single pole circuit breaker uses a snap-acting bimetal element to sense current overload. As the bimetal snaps through in response to an overload, it opens the electrical contacts and allows the reset button to pop out. The circuit remains disconnected until someone pushes the reset button, closing the contacts and re-energizing the circuit. Designed for protection of industrial circuitry up to 250V AC or 50V DC voltages. Requires a 12mm mounting hole.18mm label plate.

#### Features

- UL, CSA, VDE approved
- RoHS approved
- Rating at 250V AC or 50V DC
- Black plastic actuator button
- Supplied with all mounting hardware
- Quick connect 6.3mm terminals
- Includes ID plate and all hardware needed to panel-mount
 

 **Trip Time Information**  
100% - No trip 
165% - Trip in 1hr. 
200% - 4 to 40s 
300% - 2.5 to 11s 
400% - 1.2 to 8s 
500% - 1.0 to 5s 
600% - 0.6 to 2s 

![](https://core-electronics.com.au/attachments/localcontent/AS5503-drawing_24576483757.jpg)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/a/s/as5503-product-showcase.jpg)