DX3 Differential 2P 40A 30mA Class HPI

The Legrand DX³ 411591 residual current circuit breaker is designed to protect people against electrical hazards associated with earth leakage currents. It features 2 poles, a rated current of 40 amps, a residual current sensitivity of 30 milliamps, and a rated voltage of 230 volts AC.

This model belongs to Legrand’s range of high-immunity HPI residual current devices, currently identified by the manufacturer as Type F. Its design provides greater immunity against nuisance tripping caused by electrical disturbances, while also detecting different forms of residual current.

Type F HPI with reinforced immunity

The Legrand 411591 is specially designed for installations where disturbances may cause unwanted tripping in conventional residual current devices.

Type F can detect alternating residual currents, pulsating direct currents, and high-frequency residual currents, providing protection suited to installations with electronic equipment and loads incorporating power electronics.

In addition, its reinforced immunity against nuisance tripping helps maintain service continuity in installations exposed to certain electrical disturbances.

30 mA sensitivity

The residual current device has a rated residual current of 30 milliamps, a value commonly used for additional protection of people against the risk of electric shock caused by leakage currents.

The device continuously monitors the balance between the current entering and leaving the circuit. When it detects a residual current above the set threshold, it disconnects the circuit.

In addition to helping protect against electric contact, the residual current device helps reduce the risks associated with persistent earth fault currents that could cause overheating or fires.

2-pole, 40-amp residual current circuit breaker

Reference 411591 has a 2-pole bipolar configuration for 230-volt installations and supports a rated current of up to 40 amps.

Its format allows simultaneous disconnection of the conductors associated with the protected circuit, making it easier to isolate the installation when a leakage occurs or when maintenance work is required.

Important: residual current device without overload protection

The Legrand DX³ 411591 is a residual current circuit breaker without integrated overcurrent protection. Its main function is the detection of earth leakage currents.

For this reason, it must be combined with suitable overload and short-circuit protection devices for the installation, such as a correctly rated miniature circuit breaker.

10 kA short-circuit withstand capacity

The device has a short-circuit withstand capacity of 10 kiloamps and an impulse withstand current rating of 3 kiloamps, according to Legrand’s technical specifications.

Its rated insulation voltage is 250 volts and the impulse withstand voltage reaches 4 kilovolts.

Modular DIN rail format

The residual current device is designed for installation on a DIN rail in electrical panels and occupies 2 modules. It features mounting clips at both the top and bottom to facilitate installation and removal from the rail.

Its installation depth is 44 millimeters, with approximate dimensions of 35.6 millimeters wide, 94.8 millimeters high, and 77.8 millimeters deep.

Screw terminal connection

The Legrand 411591 uses screw terminals. Power supply is connected through the upper terminals and the load through the lower terminals.

It accepts stranded conductors with cross-sections from 0.75 to 35 square millimeters and solid conductors from 0.75 to 50 square millimeters, making it easy to integrate into electrical panels with different cable sizes.

Test button to check the residual current device

The device includes a test button that allows you to check the correct operation of the residual current tripping mechanism. Legrand recommends using this button periodically to verify the operation of the residual current protection.

It also includes a label holder to clearly identify the circuit and a visual indication of the on and off positions on the operating lever.

Compatible with DX³ range accessories

The residual current circuit breaker supports the addition of compatible auxiliary devices from the Legrand DX³ range, allowing the signaling, control, or command functions to be expanded according to the needs of the electrical panel.

Technical features of the Legrand 411591

• Brand: Legrand.
• Range: DX³.
• Reference: 411591.
• EAN: 3245064115919.
• Product type: residual current circuit breaker.
• Classification: Type F, super immune HPI.
• Number of poles: 2.
• Rated current: 40 amps.
• Residual current sensitivity: 30 milliamps.
• Rated voltage: 230 volts.
• Voltage type: AC.
• Frequency: 50 hertz.
• Short-circuit withstand capacity: 10 kiloamps.
• Impulse current withstand: 3 kiloamps.
• Rated insulation voltage: 250 volts.
• Impulse withstand voltage: 4 kilovolts.
• Selective protection: no.
• Short-time delay: yes.
• Number of modules: 2.
• Mounting: DIN rail.
• Installation depth: 44 millimeters.
• Width: 35.6 millimeters.
• Height: 94.8 millimeters.
• Total depth: 77.8 millimeters.
• Degree of protection: IP20.
• Impact resistance: IK04.
• Pollution degree: 2.
• Operating temperature: between -25 and 60 degrees Celsius.
• Storage temperature: between -40 and 70 degrees Celsius.
• Stranded conductor cross-section: between 0.75 and 35 square millimeters.
• Solid conductor cross-section: between 0.75 and 50 square millimeters.
• Connection type: screw terminals.
• Color: grey RAL 7035.
• Test button: yes.
• Compatible with auxiliary devices: yes.

Super immune residual current device for installations with electronic equipment

The Legrand DX³ 411591 combines 30 mA sensitivity with Type F HPI reinforced immunity technology, making it an especially suitable solution for circuits where electronic equipment may generate disturbances or more complex residual currents than those found in conventional loads.

Its 2-module format, DIN rail mounting, 40-amp rated current, test button, and compatibility with DX³ accessories make it easy to integrate into residential and commercial electrical panels that require residual current protection with greater immunity against unwanted tripping.