DPX3 250 HP EL S1 4P 40 A 70 kA circuit breaker 423245

DPX3 Circuit Breakers – Reliable Protection for Electrical Installations

The DPX3 250 HP EL S1 is a four-pole device designed to protect electrical circuits with a rated current of 40A. It provides effective protection against overloads and short circuits, while its high breaking capacity (70 kA at 400V) ensures safety in demanding applications. This model features an electronic S1-type overcurrent trip unit that precisely responds to load variations.

Functionality and Applications

This circuit breaker is suitable for electrical installations in commercial and industrial buildings, as well as residential systems with high power demands. The option to install an additional motorized drive extends its functionality, enabling remote control of the circuit. Thanks to two auxiliary changeover contacts, the breaker can be integrated into control and signaling systems. Front-mounted main circuit terminals simplify wiring connections.

Specifications and Benefits

• High short-circuit breaking capacity: 70 kA at 400V ensures effective protection even during high surge currents.
• Electronic S1-type overcurrent trip unit: allows precise adjustment of the tripping characteristic to match load specifics (setting range: 10–40A).
• Four-pole design: ideal for protecting three-phase electrical circuits.
• Wide rated voltage range: from 230V to 690V – universal application across diverse installations.
• IP30 protection rating: provides basic protection against contact and ingress of solid objects.
• Motorized drive compatibility: expands device functionality and enables remote operation.
• Trip indicator: facilitates quick identification of the breaker’s status and fault location.
• Busbar connection: ensures secure and durable main circuit connections.
• Fixed mounting design: guarantees stability and reliable operation.

The use of an electronic overcurrent trip unit enables more precise protection of installations compared to traditional thermal-magnetic breakers, minimizing unnecessary tripping during transient overloads. DPX3 breakers are also characterized by high reliability and long service life, resulting in low operating costs.