#69 in Semiconductor Products #2330 in Electronics
Style:
Semiconductor Products
Product No.:
2098903048
Description:
Contactor ESC425S 25A 4S 230V buzz-free (ESC425S)
The ESC425S contactor from Hager is a quiet, reliable switching device designed for residential, commercial, and light industrial applications. With a rated operational current of 25 A and a 4-pole (4S) configuration, it is suitable for controlling and switching various electrical loads such as lighting circuits, heating systems, ventilation units, or small motor loads, depending on the overall installation concept. The 230 V control voltage enables direct integration into standard low-voltage systems, making it easy to use in common distribution boards and control panels.
A key feature of the ESC425S is its "hum-free" (brummfrei) operation. Unlike traditional contactors that can produce a noticeable humming noise under coil energization, this device is designed for silent or near-silent operation. This makes it particularly suitable for use in noise-sensitive environments such as residential buildings, offices, hotels, educational facilities, or healthcare buildings where comfort and low noise levels are essential. Reduced acoustic emissions contribute to better user comfort and a more pleasant interior environment.
From a technical perspective, the 25 A rating and 4-pole design provide flexibility in system planning. Multiple circuits can be switched simultaneously, and the compact form factor (typical for Hager modular devices) allows efficient use of space in the distribution board. The device is intended for mounting on DIN rails, which simplifies installation, maintenance, and later expansions or modifications. The 230 V control voltage is advantageous because it eliminates the need for special control transformers in many standard applications, and wiring can be kept straightforward and cost-efficient. Coordination with protective devices and upstream components in Hager systems further contributes to a safe and coherent installation.
Typical applications include time-controlled switching of loads via time switches or building automation systems, integration into smart home or energy management solutions, and load shedding concepts to optimize energy consumption. By using a hum-free contactor, planners and installers can ensure that automation remains unobtrusive and does not disturb occupants with mechanical noise. In addition, stable switching performance contributes to high availability and reliability of the connected systems.
Hager, as the manufacturer, is known as a specialist for low-voltage electrical distribution, building automation, and installation systems. The company focuses on user-friendly, installer-oriented solutions that support safe and compliant electrical installations. Hager places emphasis on product quality, long service life, and system compatibility, which helps reduce replacement frequency and supports reliable operation over many years.
In terms of sustainability and environmental responsibility, Hager publicly communicates commitments such as improving energy efficiency in buildings through its product portfolio and optimizing manufacturing processes with regard to resource use and environmental impact. While specific sustainability details for the ESC425S itself are not stated here, the general orientation of Hager toward durable, high-quality components supports longer product life cycles and can help reduce electronic waste. By choosing a robust and hum-free contactor like the ESC425S, customers contribute to more comfortable, energy-conscious, and durable electrical installations. In this way, the purchasing decision supports not only technical performance and comfort, but also broader efforts toward responsible, sustainable building technology.
