Legrand DX3 C32 4-Pole Miniature Circuit Breaker

Overview

The Legrand DX3 C32 is a 4-pole miniature circuit breaker from Legrand’s widely specified DX3 modular protection range, engineered to protect final electrical circuits against overload and short-circuit faults in residential, commercial, and light industrial distribution boards. Rated at 32A with a Type C tripping curve, the DX3 C32 combines a compact 1-module-per-pole DIN-rail footprint with a 10,000A breaking capacity to EN/IEC 60898-1, making it a dependable choice for panel builders and electrical contractors sizing circuits that carry moderate inrush currents, such as motor loads and fluorescent or LED lighting banks.

Working closely with plant engineers in the region, Seven Star LLC proudly supplies the DX3 range to electrical contractors, panel builders, and facility engineers across Oman and the GCC. Every DX3 C32 unit supplied through Seven Star LLC comes with manufacturer documentation and technical support for projects ranging from residential distribution boards to commercial and light-industrial switchgear across Muscat and the wider Sultanate.

Operating Principle of the Legrand DX3 C32

The Legrand DX3 C32 protects circuits using a combined thermal-magnetic tripping mechanism. Under sustained overload conditions, a bimetal strip inside each pole heats and bends proportionally to the current flowing through it, tripping the breaker once the current exceeds rated levels for a set duration — this characteristic follows the inverse-time curve defined in EN/IEC 60898-1. For short-circuit conditions, a magnetic trip coil reacts near-instantaneously once current exceeds the Curve C threshold of 5–10 times rated current, disconnecting the circuit within milliseconds to limit fault energy and protect downstream cabling.

This dual-protection approach means the DX3 C32 tolerates the normal inrush current of motor starts and transformer energization without nuisance tripping, while still isolating the circuit rapidly during a genuine short-circuit or severe overload. Because tripping is entirely electromechanical, the breaker requires no external power supply and resets manually via the toggle handle once the fault condition is cleared, with no consumable parts to replace under normal operation.

Engineering Design of the Legrand DX3 C32

Physically, the DX3 C32 uses a compact 1-module-per-pole (17.7mm) housing across all four poles, allowing dense circuit arrangements within standard DIN-rail enclosures per IEC 60715. The breaker snaps directly onto 35mm DIN rail without tools, and the toggle-style operating handle provides clear ON/OFF/tripped indication visible from the front of the enclosure door on most panel designs.

Termination is via screw-clamp terminals suitable for both solid and stranded conductors, with a rated operating voltage up to 440V AC (with derating) across the 4-pole configuration. The DX3 housing is manufactured from self-extinguishing, impact-resistant thermoplastic, and the mechanism is factory-sealed to prevent tampering with the calibrated trip settings, ensuring consistent protection performance throughout the breaker’s service life.

Key Features

The Legrand DX3 C32 miniature circuit breaker offers the following features for reliable circuit protection:

• 4-pole configuration rated 32A with Type C tripping curve for circuits with moderate inrush current.
• 10,000A breaking capacity to EN/IEC 60898-1 at 230/400V, suitable for standard distribution board applications.
• Compact 1-module-per-pole DIN-rail housing compliant with IEC 60715 for space-efficient panel design.
• Thermal-magnetic tripping mechanism combining overload and short-circuit protection in a single device.
• Tool-free DIN-rail mounting and screw-clamp terminals for fast, reliable installation.
• Self-extinguishing thermoplastic housing rated for continuous industrial and commercial duty.
• Clear toggle-handle position indication for quick visual verification of breaker status.
• Manual reset operation with no consumable components under normal fault-clearing conditions.

Industrial Applications

The DX3 C32 is routinely specified in commercial and light-industrial distribution boards across Oman and the GCC, protecting lighting circuits, small power outlets, and motor branch circuits in office towers, retail developments, and hospitality properties. Its Type C curve makes it well suited to circuits feeding air-conditioning fan coil units, small pumps, and LED lighting drivers, where a Type B curve would risk nuisance tripping on startup inrush.

With fast quotation turnaround and technical support, Seven Star LLC distributes the DX3 range to panel builders and electrical contractors working on projects throughout the Sohar and Salalah economic zones, as well as commercial developments in Muscat. Facility engineers maintaining district cooling plants, warehousing complexes, and mixed-use developments rely on the DX3’s consistent trip characteristics, with parts supplied on request through Seven Star LLC.

Technical Specifications

Key technical specifications for the Legrand DX3 C32 miniature circuit breaker are summarized below.

Facility engineers evaluating the Legrand DX3 C32 against alternative modular breakers will find its combination of compact footprint, EN/IEC certified breaking capacity, and GCC-wide parts availability through Seven Star LLC difficult to match for standard distribution board upgrades and new panel builds alike.

Request a Quote for Legrand DX3 C32 4-Pole Miniature Circuit Breaker

To request a formal quotation for the Legrand DX3 C32 miniature circuit breaker, contact Seven Star LLC’s instrumentation and electrical division for current availability and lead time across Oman and the GCC. Technical datasheets are available on request for panel design and specification review. With engineering support in Muscat, Seven Star LLC supplies DX3 protection devices on request, with lead time confirmed at quotation and dedicated technical support for contractors and facility engineers throughout the Sultanate.

Browse the full Legrand range or see more Circuit Breaker products supplied by Seven Star LLC in Oman and the GCC.