Schneider Electric A9Z04440 Type A RCD 4P 40 A

Name: Residual-current device Schneider Electric A9Z04440 A9Z04440
Brand: Schneider Electric
SKU: 5104682
Price: 55.99 EUR
Availability: OutOfStock

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Residual-current device Schneider Electric A9Z04440 Type A 4P 40 A 380–415 V 500 A breaking capacity

Short description

Schneider Electric A9Z04440 is a Type A residual-current device (RCD) with 4 poles designed for AC and pulsating DC leakage detection. Rated current 40 A and rated voltage 380 V (operating 380–415 V). Breaking capacity 500 A. Compact DIN-rail mounted protection device (72×68×81 mm) suitable for domestic, commercial and light industrial electrical distribution to protect against earth faults and leakage currents.

Warranty: 2 Years

SKU: 5104682

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Product information

Description

Schneider Electric A9Z04440 is a 4-pole Type A residual-current device (RCD) designed to detect AC and pulsating DC leakage currents and to disconnect power in case of earth faults. The device is rated for a nominal current of 40 A and is intended for use on systems with nominal voltages of 380–415 V. With a compact DIN-rail form factor and a breaking capacity of 500 A, this unit is suitable for domestic, commercial and light industrial distribution boards where selective protection against electric shock and fire risk from leakage currents is required.

Advantages

The Type A detection characteristic provides reliable sensitivity to AC and pulsing DC residual currents that may not be detected by Type AC devices. Its 4-pole construction allows protection of three-phase systems including neutral, and the 40 A rated current matches common circuit requirements for small distribution circuits. The 500 A breaking capacity ensures coordinated operation with upstream overcurrent protective devices in many low-voltage installations. The compact dimensions and DIN-rail mounting permit straightforward integration into standard distribution enclosures.

Suitable for

Protection of three-phase circuits with neutral in homes, small offices and commercial premises
Applications where residual currents may include pulsating DC components (Type A requirement)
Integration into standard DIN-rail distribution boards and consumer units
Circuits up to 40 A nominal current, including branch circuits for appliances and lighting

When it may not be suitable

This RCD does not provide overcurrent protection by itself and must be used in combination with appropriate circuit breakers or fuses sized for the installation. It is not a Type B device and therefore is not suitable where smooth DC residual currents or high-frequency components are expected; such installations may require Type B or other specialised protection. For systems with nominal currents above 40 A or where higher breaking capacity is required, a different device should be selected.

Key specifications

Type: A residual-current device (senses AC and pulsating DC residual currents)
Number of poles: 4 (three phases + neutral)
Rated current: 40 A
Rated operational voltage: 380–415 V (three-phase)
Breaking capacity: 500 A
Mounting: DIN-rail (compact footprint)
Typical application: earth-fault/leakage protection for low-voltage distribution

How to use

Install the Schneider Electric A9Z04440 on a standard DIN-rail inside the distribution board, ensuring correct orientation and secure mechanical fixing. Connect the incoming three-phase supply and neutral to the designated input terminals and the outgoing load conductors to the output terminals following the wiring diagram supplied by the manufacturer. Use appropriate cable sizes and torque settings as required by local installation rules. Confirm upstream short-circuit protection is present and coordinated with the 500 A breaking capacity of the device. After wiring, perform insulation and functional tests according to local electrical codes to verify correct operation before placing the circuit into service.

What to consider before purchase

Confirm the need for Type A sensitivity (AC + pulsed DC) rather than Type AC or Type B
Verify the device rated current (40 A) matches the circuit load and conductor sizing
Ensure the 500 A breaking capacity and coordination with upstream protective devices are adequate
Check available space on the DIN-rail and the product dimensions to ensure fit

Usage recommendations

Use this RCD together with correctly sized overcurrent protection devices and follow national wiring regulations. Periodically test the device using the test button and include it in routine maintenance checks to ensure continued protection against leakage currents.

Specifications

Product colour:: White

All features

Type:: Type A
Storage temperature (T-T):: -30 - 70
Breaking capacity:: 500 A
Pollution degree:: 2
Circuit breaker type:: Residual-current device

Weight & dimensions

Height:: 81 mm
Width:: 72 mm
Depth:: 68 mm

Design

Certification:: EN/IEC 61008-1
Product colour:: White
International Protection (IP) code: Device protection rating against dust and water according to the international IP standard.: IP20

Power

Input voltage:: 380 - 415
Rated current:: 40 A
Rated voltage:: 380 V

Features

Operating temperature (T-T):: -25 - 40
Number of poles:: 4P

Technical details

Sustainability certificates:: RoHS

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FAQ

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Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All Schneider Electric products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Schneider Electric service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

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Residual-current device Schneider Electric A9Z04440 Type A 4P 40 A 380–415 V 500 A breaking capacity

Short description

Product information

Description

Advantages

Suitable for

When it may not be suitable

Key specifications

How to use

What to consider before purchase

Usage recommendations

Specifications

Weight & dimensions

Design

Power

Features

Technical details

Description

Similar products

Product comparison

Customer reviews

Customer questions

What payment options are available?

Can this product be purchased for a company (with VAT)?

What is the warranty period?

Can the product be returned after purchase?

Where should I contact for warranty service?

How can I tell if this product suits my needs?