--- product_id: 328270109 title: "A9Z21440 Circuit Breaker A 40A 0.03A 415V" brand: "schneider electric" price: "R3148" currency: ZAR in_stock: true reviews_count: 5 category: "Schneider Electric" url: https://www.desertcart.co.za/products/328270109-a9z21440-circuit-breaker-a-40a-0-03a-415v store_origin: ZA region: South Africa --- # 40A rated current 4-pin power system compatible 30mA ground fault sensitivity A9Z21440 Circuit Breaker A 40A 0.03A 415V **Brand:** schneider electric **Price:** R3148 **Availability:** ✅ In Stock ## Summary > ⚡ Stay powered, stay protected — the smart choice for your modern workspace! ## Quick Answers - **What is this?** A9Z21440 Circuit Breaker A 40A 0.03A 415V by schneider electric - **How much does it cost?** R3148 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/328270109-a9z21440-circuit-breaker-a-40a-0-03a-415v) ## Best For - schneider electric enthusiasts ## Why This Product - Trusted schneider electric brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Safety:** 30mA sensitivity delivers top-tier personal and fire protection, minimizing risk. - • **Seamless Integration:** Designed for 4-pin systems, perfect for modern electrical infrastructures. - • **Powerhouse Protection:** Robust 40A rating ensures reliable circuit control for demanding setups. - • **Effortless Maintenance:** Tool-free DIN rail mounting and front-access fasteners streamline installation and servicing. - • **Smart Status Indicators:** VisiTrip & VisiSafe provide instant visual alerts for overloads and safe voltage clearance. ## Overview The Schneider Electric A9Z21440 is a high-performance Type A residual current circuit breaker rated at 40A with 30mA ground fault sensitivity. Engineered for 4-pin power systems and compliant with EN 61008 and IEC standards, it offers advanced protection against electrical faults with intuitive visual indicators and easy DIN rail mounting. Trusted globally, this compact, VDE-certified device ensures safety and reliability in professional electrical installations. ## Description Residual current circuit breaker Acti 9 iID, 1.5kA (IEC/EN 61008-1). 4-pin, rated current 40A, ground fault sensitivity 30mA, ground fault protection class type A, operating voltage (Ue) 400V AC, insulation voltage (Ui) 500V AC. Ensures additional protection when touching directly (≤ 30mA). Error protection in case of indirect touch, e.g. in case of insulation faults (≥ 100 mA, ≤ 300 mA). Error protection in construction power distributors (500mA). Switching and disconnecting circuits. Jump circuit for low-wear switching of the contacts. With mechanical front error message indicator (VisiTrip) to indicate overload or short circuit triggers. Safe contact display (VisiSafe) of the residual current circuit breaker, when the indicator is green indicator, safety of voltage clearance on the outlet side. Test button for regular checking of the function. Double terminals for connecting cables or phase rails on both sides. Easy removal of the individual device with installed phase rail, thanks to the front accessible fastener. Additional stackable auxiliary modules (optional)- low voltage release (iMN), surge release (iMSU), working current trigger (iMX), auxiliary switch for status message (iOF), error message switch (iSD). Tool-free mounting on the left side of the device. Colour: RAL 9003. The residual current circuit breaker iID meets the following standards - IEC/EN 61008-1 and IEC/EN 60947-2. Furthermore, this series is VDE certified. Review: Good - 👍 Review: Eccellente - Semplicemente il top. ## Features - Type A circuit breaker with a rated current of 40 A - Sensitivity of 30mA to ensure personal and fire protection - Suitable for use in 4 pin power systems - Meets the European standard EN 61008 and thus offers a high level of safety - High quality product from Schneider Electric, a renowned manufacturer of electrical components ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00DE3XVEM | | Best Sellers Rank | #27,731 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #4 in Magnetic Circuit Breakers | | Brand | Schneider Electric | | Brand Name | Schneider Electric | | Circuit Breaker Type | Standard | | Circuit breaker type | Standard | | Country Of Origin | Estonia | | Current Rating | 40 Amps | | Current rating | 40 Amps | | Customer Reviews | 4.6 out of 5 stars 1,836 Reviews | | Global Trade Identification Number | 03606480443206 | | Included Components | Residual current circuit breaker FI circuit breaker ACTI9 | | Item Dimensions D x W x H | 5.4D x 8.2W x 9.5H centimeters | | Item Type Name | Schneider Electric A9Z21440 A9Z21440 FI Circuit Breaker A 40A 0.03A 415V | | Item Weight | 0.37 Kilograms | | Manufacturer | Schneider Electric | | Model | A9Z21440 | | Mounting Type | DIN Rail Mount | | Mounting type | DIN Rail Mount | | Number of Items | 1 | | Number of Poles | 4 | | Number of poles | 4 | | Part Number | A9Z21440 | | Product dimensions | 5.4D x 8.2W x 9.5H centimeters | | Unit Count | 1 Count | | Voltage | 500 Volts | ## Product Details - **Brand:** Schneider Electric - **Circuit breaker type:** Standard - **Current rating:** 40 Amps - **Mounting type:** DIN Rail Mount - **Product dimensions:** 5.4D x 8.2W x 9.5H centimeters ## Images ![A9Z21440 Circuit Breaker A 40A 0.03A 415V - Image 1](https://m.media-amazon.com/images/I/51Mw5iKCiGL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good *by M***B on 15 February 2024* 👍 ### ⭐⭐⭐⭐⭐ Eccellente *by D***O on 27 June 2026* Semplicemente il top. ### ⭐⭐⭐⭐⭐ Boa Qualidade. *by R***S on 14 August 2026* Boa Qualidade. ## Frequently Bought Together - Schneider Electric A9Z21440 FI Circuit Breaker A 40A 0.03A 415V, 40 amps, 4 Polig - Schneider Electric FI LS RESI9 1P + N 16A B 30MA Type A 6KA, R9D01616 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.za/products/328270109-a9z21440-circuit-breaker-a-40a-0-03a-415v](https://www.desertcart.co.za/products/328270109-a9z21440-circuit-breaker-a-40a-0-03a-415v) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-09-14*