The Pilz PIT ES4S (Part No. 400134) is a robust and dependable control and signal device engineered to deliver reliable emergency stop (E-Stop) functionality in industrial automation systems. As part of Pilz’s trusted PIT series, this device is designed to ensure both operator safety and system reliability, combining rugged construction with international compliance standards.

The unit supports a supply voltage range of 12–30 V AC/DC, making it highly versatile and easy to integrate into a wide range of industrial control architectures. Whether installed in low-voltage DC environments or AC-powered systems, the PIT ES4S adapts seamlessly, providing engineers with flexibility in system design and deployment.

Built to withstand ambient temperatures between -25 °C and +55 °C, the PIT ES4S is suitable for operation in challenging environments, including refrigerated areas, outdoor installations, or high-temperature production facilities. This wide environmental tolerance makes it an ideal choice for industries where temperature fluctuations and tough conditions are part of daily operations.

The device’s IP65-rated housing offers strong protection against dust and water ingress. This ensures reliable performance even in environments where equipment is exposed to washdowns, airborne particles, or high humidity. For industries such as food processing, packaging, or chemical production, where cleanliness and durability are critical, this protection class enhances reliability and extends service life.

Safety compliance is reinforced through adherence to pollution degree 3 clearance and creepage specifications, which provide additional assurance that the device will perform reliably even in contaminated or moisture-prone environments. This ensures that the PIT ES4S maintains safe and consistent operation under a wide range of industrial conditions.

As a control and signalling device, the PIT ES4S is typically used in emergency stop circuits and other safety-related operator control applications. It provides a straightforward, reliable way for operators to halt machinery in hazardous situations, reducing the risk of injury and ensuring compliance with machine safety regulations.

Its compact and durable design ensures ease of installation in control panels, operator stations, or machine housings, while its long operational life minimises maintenance needs. The integration of robust safety features and industrial-grade protection makes it a cost-effective and dependable solution for businesses prioritising both operator safety and machine uptime.

Industries that benefit from the PIT ES4S include manufacturing, packaging, logistics, process automation, robotics, and material handling. In each case, the device provides the assurance that safety-critical controls remain accessible, functional, and reliable at all times.

In summary, the Pilz PIT ES4S combines wide voltage compatibility, rugged environmental performance, IP65 housing protection, and compliance with pollution degree 3 standards. It is a reliable and versatile emergency stop solution designed to enhance both safety and productivity in modern industrial environments.