Legrand 411161 DX3 2P 32 A C-Curve RCBO 30 mA AC

411161: Legrand DX3 2-pole 32 A RCBO, C curve, 30 mA AC type

The Legrand 411161 is a DX3 6000 A two-pole residual current circuit breaker with overcurrent protection, rated 32 A with a C curve and 30 mA AC-type earth-leakage sensitivity. Both poles are protected, the device is 4 modules wide (71.2 mm) and it works on 230 V AC, 50 Hz. The catalogue lists 6 kA breaking capacity under EN 61009 and 10 kA under IEC 60947-2. Seven Star LLC supplies 411161 in Oman and the GCC as an independent supplier in Muscat.

Unlike the one-protected-pole 1P+N RCBOs that save a module, this two-pole device opens both the phase and the neutral conductor on overload or short circuit. That is a requirement in some installations and a design preference in others, and it affects the way the circuit is isolated for maintenance.

What the 411161 reference describes

Technical specifications for 411161

How the 411161 works at 230 V

The thermal element reacts to sustained overload above 32 A, and the magnetic element trips on short circuits between 160 and 320 A, which is 5 to 10 times the rating. In parallel, a summation transformer senses the imbalance between phase and neutral. When the leakage reaches the 30 mA threshold, an electromagnetic relay opens the contacts of both poles. A test button on the front lets the installer check the residual function, and a yellow indicator shows a residual trip.

The two-pole body is 71.2 mm wide, four times the width of a basic one-module breaker,. This makes it a space-consuming choice in dense boards; if space is tight, a 1P+N RCBO such as 411053 or 411097, two modules wide, may be preferable.

Where 411161 fits and related parts

The 411161 protects a single-phase circuit such as a socket group, a water heater or an air-conditioner. The 4-pole siblings 411189 (32 A, 4 modules) and 411192 (63 A, 7 modules) cover three-phase circuits. Use the 2-pole version when the design needs both conductors switched or when local rules require double-pole disconnection of single-phase final circuits.

Selection checklist for 411161

• Circuit current: 32 A with allowance for cable size and ambient temperature.
• Disconnection: both phase and neutral open together.
• Space: four modules, 71.2 mm; compare with 1P+N devices of 2 modules.
• Type: AC suits resistive and lighting loads; use A or F for electronic loads.
• Supply voltage: 230 V AC at 50 Hz.
• Fault level: 6 kA under EN 61009, 10 kA under IEC 60947-2.

Installation, testing and maintenance of 411161

Clip the device on the rail and connect phase and neutral using the marked terminals, which accept 1 to 25 mm² flexible or 1 to 35 mm² rigid copper. Tighten to the recommended torque and apply the label. After energising, press the test button, which should open the circuit, then reset and record the date. A device that trips with the yellow indicator showing points to an earth fault; check insulation and appliances before resetting. Record 411161 in the circuit schedule and keep a spare for fast replacement.

Typical applications in Oman and the GCC

Single-phase final circuits in offices, accommodation blocks, workshops and site cabins use RCBOs for sockets and appliances. High ambient temperature and frequent use of air-conditioning loads are typical in Oman, so leave clearance between devices, check that the 32 A load is not continuously at full rating and test the residual function on a regular schedule.

Information to send with an RFQ for 411161

• Reference 411161 and the quantity, including spares for panel maintenance.
• Rated current (32 A), curve (C) and residual current type (AC, A or F).
• Supply voltage and number of poles to be switched.
• Board layout and busbar type.
• Delivery location (Muscat, Sohar, Salalah or elsewhere in the GCC) and the date you need the goods.
• Any documents you need with the quotation, such as a technical data sheet or a compliance statement.

Storage, handling and spares for the Legrand 411161

Keep Legrand 411161 units in their original packaging until they are mounted. Store them indoors in a dry, dust-free room, away from direct sun and condensation. Panel shops in Oman and the GCC often hold stock in warehouses that get very hot in summer, so check that storage temperature stays within the limits given in the manufacturer datasheet.

• Check the label and order code on every unit against the drawing before it goes into the panel.
• Use the correct tool and tightening torque for the terminals, as given in the instructions supplied with the product.
• Keep a small number of spare units for each rating used on site, so that a failed or damaged part can be replaced without waiting for a new shipment.
• Record the order code in the panel documentation and the as-built drawings, so that maintenance teams can reorder the same part later.

When you plan spares for a project, group the Legrand 411161 with the other parts of the same panel in one RFQ. This keeps delivery dates aligned and makes it easier to confirm stock for the whole bill of materials at once.

Documents and quotation

The Legrand technical data sheet that covers 411161 is attached on this page. It gives the range table, dimensions, curves and accessories, so check its notes against your design before you order.

To request a quotation, send reference 411161, the quantity and your delivery location. Seven Star LLC is an independent supplier in Muscat and is not affiliated with the manufacturer; we will confirm availability and lead time for your order.