DPX3 125 HP+RCD 4P 63 A 36 kA circuit breaker 423636

Multifunctional switch with residual current protection – safety and reliability in one enclosure

The DPX3 125 HP+RCD switch is a comprehensive solution for electrical installations, combining the functions of an overcurrent and residual current device (RCD). This unit provides effective protection against overloads, short circuits, and electric shock, making it an ideal choice for both professionals and end users. With a rated continuous current of 63A and a high short-circuit breaking capacity of 36kA, it ensures stable operation even under demanding conditions.

Design and application

The DPX3 switch is a complete integrated device housed in a single enclosure, designed for mounting on a TH rail (though mounting on a TH rail is not possible in this model). The four-pole (4P) construction enables protection of three-phase circuits. The integrated RCD protection effectively safeguards against dangerous leakage currents, minimizing the risk of electric shock. Main terminal connections are made via bolted connections, ensuring secure and durable electrical contacts. Two changeover auxiliary contacts enhance device functionality, enabling integration with control and signaling systems.

Advantages and benefits

• Versatility: Integration of overcurrent and RCD protection in a single device simplifies installation and reduces costs.
• High short-circuit breaking capacity: 36kA ensures effective protection of installations even under high fault currents.
• Integrated RCD protection: Prevents electric shock by detecting earth leakage currents.
• Wide rated voltage range: Suitable for installations with voltages from 220V to 690V.
• Adjustable thermal trip setting: Calibration range of 50.4–63A allows precise matching to load characteristics.
• Trip indicator: Facilitates quick identification of device status and fault location.
• Safety: Compliance with safety standards ensures reliable operation and protection of people and property.
• Durability: Constructed from high-quality materials to guarantee long service life.

Operating parameters and compliance with standards

The DPX3 125 HP+RCD switch features an IP30 protection rating, providing protection against finger contact and solid objects larger than 2.5 mm in diameter. It is designed to operate in ambient temperatures ranging from -20°C to 70°C and is intended for use with AC voltage at frequencies of 50–60 Hz. The absence of a motorized drive and DIN TH rail mounting capability confirms its design as a classic modular switch intended for specific applications requiring high reliability and safety.