---
product_id: 392971946
title: "Hager CDA440D FI Switch 40A 30mA A Type 4-Pin"
brand: "hager"
price: "HK$662"
currency: HKD
in_stock: true
url: https://www.desertcart.hk/products/392971946-hager-cda440d-fi-switch-40a-30ma-a-type-4-pin
store_origin: HK
region: Hong Kong
---

# 40A high current capacity 500V voltage rating 30mA sensitive A-type protection Hager CDA440D FI Switch 40A 30mA A Type 4-Pin

**Brand:** hager
**Price:** HK$662
**Availability:** ✅ In Stock

## Summary

> 🛡️ Stay powered, stay protected — the smart switch for the savvy professional

## Quick Answers

- **What is this?** Hager CDA440D FI Switch 40A 30mA A Type 4-Pin by hager
- **How much does it cost?** HK$662 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/392971946-hager-cda440d-fi-switch-40a-30ma-a-type-4-pin)

## Best For

- hager enthusiasts

## Why This Product

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

## Key Features

- • **High Voltage Ready:** Supports up to 500V for versatile commercial & personal use
- • **Power-Packed 40A Capacity:** Handles heavy-duty electrical loads with ease
- • **Trusted Hager Reliability:** Engineered by a global leader for peace of mind in every circuit
- • **Compact DIN Rail Mount Design:** Sleek 9.5x8x8 cm form factor fits seamlessly into modern setups
- • **Precision 30mA A-Type Sensitivity:** Detects even subtle leakage currents for enhanced safety

## Overview

The Hager CDA440D FI Switch is a compact, high-performance 40A circuit breaker with 30mA A-type residual current protection, designed for both commercial and personal electrical safety. Rated for 500 volts and DIN rail mountable, it offers reliable, precise leakage detection in a sleek, lightweight package.

## Description

Hager CDA440D FI Switch 40A 30mA A Type 4-Pin

## Features

- Hager CDA440D FI Circuit Breaker
- Circuit breaker
- Hager
- CDA440D CDA440D

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Hager |
| Part number | CDA440D |
| Item Weight | 200 g |
| Product Dimensions | 9.5 x 8 x 8 cm; 200 g |
| Item model number | CDA440D |
| Color | gray |
| Material | Plastic |
| Voltage | 500 Volts |
| Item Package Quantity | 1 |
| Measurement System | Metric |
| Plug Profile | DIN Rail Mount |
| Specific uses | Commercial and personal use |
| Included components | NO |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** Hager
- **Current rating:** 40 Amps
- **Product dimensions:** 9.5D x 8W x 8H centimeters
- **Circuit breaker type:** Standard
- **Mounting type:** DIN Rail Mount

## Images

![Hager CDA440D FI Switch 40A 30mA A Type 4-Pin - Image 1](https://m.media-amazon.com/images/I/61hz+qwtybL.jpg)

## Frequently Bought Together

- Hager cda440d RCD 4P 40 A 30 mA 6 kA TYPE A
- ABB S203-B20 Miniature Circuit Breaker, 3 Pole, Type B, 6/10kA Breaking Capacity, 20 Amp Current (2CDS253001R0205)

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**Shop now:** [https://www.desertcart.hk/products/392971946-hager-cda440d-fi-switch-40a-30ma-a-type-4-pin](https://www.desertcart.hk/products/392971946-hager-cda440d-fi-switch-40a-30ma-a-type-4-pin)

---

*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-01-27*