Legrand DPX³ 160 Magnetic Thermal Circuit Breakers and DPX³-I 160 Free Release Miniature Circuit Breakers

1. Usage

The DPX³ range is designed to offer a precise and advanced solution for electrical installations, catering to high-power applications with high-performance circuit breakers in compact dimensions and at a competitive cost.

2. Range

2.1 DPX³ 160 Magnetic Thermal Circuit Breakers

The DPX³ 160 series offers circuit breakers with breaking capacities of 16 kA, 25 kA, 36 kA, and 50 kA, available in 3-pole and 4-pole configurations. Various current ratings (In) from 16A to 160A are available.

2.2 DPX³-I 160 Free Release Miniature Circuit Breakers

The DPX³-I 160 is a free release miniature circuit breaker rated for 160A, available in 3-pole and 4-pole configurations.

2.3 Composition

The DPX³ 160 circuit breaker includes fixing screws, cage terminals (suitable for flexible cables up to 70 mm² or rigid cables up to 95 mm²), and separation partitions.

3. Technical Specifications

3.1 Electrical Characteristics

Details on poles, nominal insulation voltage (Ui), nominal operating voltage (Ue), impulse withstand voltage (Uimp), nominal frequency, ambient temperature, electrical endurance, and utilization category are provided. The devices are suitable for isolation.

3.2 Mechanical Characteristics

Mechanical endurance is rated at 25,000 cycles, and 25,000 cycles with motorized control. Information on mechanical operating forces for opening, closing, and resetting is also included.

3.3 Electrodynamic Forces

Recommended distances to maintain between the circuit breaker and the first conductor fixing point to reduce the effects of electrodynamic forces during a short circuit are detailed. The installer should consider conductor weight and electrical junction integrity.

3.4 Power Dissipation per Pole under In

Tables show the power dissipation per pole for various connection types (cage terminals, large capacity cage terminals, crimp terminals, spreaders, rear terminals, and extractable versions) under nominal current (In).

3.5 Dimensions and Weight

Detailed dimensions (Length x Height x Depth) for 3-pole and 4-pole versions are provided, along with diagrams illustrating fixed versions, versions with front terminals, side motorized control, and rotary control (direct and remote). Weight specifications for different configurations are also listed.

4. Installation Guidelines

Installation rules according to IEC/EN 60947-1 are presented. This includes temperature derating factors for different ambient temperatures and installation configurations (vertical fixed, horizontal fixed). Information on climatic conditions and electromagnetic compatibility (EMC) is also provided.

5. Dimensions and Weight

Detailed dimensions and weight information for the DPX³ 160 series are presented, including specific measurements for different configurations and accessories.

6. Connection

The circuit breakers can be mounted on DIN rails vertically or horizontally. Connection options include busbars, crimp terminals, connection extenders, and cage terminals. Specifications for cable cross-sections for different terminal types are provided. Information on DC connection modes for circuit breakers and switch-disconnectors is also included.

7. Equipment and Accessories

7.1 Trip Units

Three types of trip units are available: current-release, voltage-release, and delayed voltage-release trip units, with various voltage ratings and reference numbers.

7.2 Auxiliary Contacts

Auxiliary contacts are available to visualize the status of contacts or fault signaling. Standard auxiliary contacts (OC) and fault signal contacts (CTR) are listed with their voltage and current ratings.

7.3 Rotary Control

Four types of rotary controls are available, compatible with DPX³ 250. These include direct and remote controls, with options for key operation and emergency functions.

7.4 Motorized Control

A motorized control unit is available for lateral mounting, operating on 24-230V~.

7.5 Mechanical Accessories

Accessories such as padlocks, phase separation partitions, terminal shrouds, and mounting plates are listed with their reference numbers.

7.6 Connection Accessories

Accessories for connection include spreaders, screw terminals for crimp terminals, and cage terminals of standard and large capacity, suitable for various cable cross-sections and busbar sizes.

8. Marking

Products are supplied with labeling that complies with standards and directives. This includes laser-etched and self-adhesive labels with manufacturer information, product type, conformity marks, and technical specifications. The labels provide essential information for identification and compliance.

9. Curves

9.1 Magnetic Thermal Trip Curve

A graph illustrates the magnetic thermal trip curve, showing the time-to-trip versus the ratio of current to nominal current (I/In) for different trip unit settings. It details the relationship between current and tripping time for various conditions.

9.2 Energy Limitation Characteristic Curve

This curve shows the energy limitation (I²t) as a function of the short-circuit current (Icc). It helps in understanding the energy let-through during a short circuit for different current ratings.

9.3 Peak Current Limitation Curve

This curve illustrates the peak current limitation (Ip) as a function of the short-circuit current (Icc). It indicates the maximum peak current that the circuit breaker can limit during a short circuit.

10. Standards and Regulations

The DPX³ range complies with IEC/EN 60947-2 and 60947-3 standards. It also adheres to European directives such as RoHS (Restriction of Hazardous Substances) and WEEE (Waste Electrical and Electronic Equipment). Packaging also complies with relevant decrees and directives.

11. Other Information

Information on Legrand's software tools like XLPro Calcul, XLPro³ Tool Sélectivité et filiation, and XLPro Tableaux is provided for calculation, selectivity, and panel design. Details on workshop guides and PEP (Product Environmental Profile) are also available. For specific technical information, contacting Legrand's technical support is recommended.