The Pilz PIT ESB1.2 Safe Contact Block 2 N/C (part no. 400301) is a high-reliability control and signal device engineered for use in emergency stop (E-STOP) applications and safety-related control circuits. As part of the Pilz PIT range, this contact block offers dependable safety performance, robust construction, and compliance with international standards, making it a key component in modern industrial safety systems.

The device is equipped with two normally closed (N/C) contacts, designed to provide redundant safety functionality. In the event of an emergency stop activation, both contacts open to immediately interrupt the control circuit and disable hazardous machine movements. This dual-channel arrangement enhances fault tolerance and ensures compliance with the high safety integrity levels required in today’s industrial applications.

Engineered in compliance with EN 60947-5-1, the PIT ESB1.2 meets rigorous requirements for low-voltage switchgear and controlgear. This certification ensures that the device is suitable for safety-critical use, offering mechanical durability, electrical reliability, and consistent performance under frequent actuation.

The contact block uses AgNi (silver-nickel) contact material, which combines the excellent conductivity of silver with the strength and resistance of nickel. This material is specifically chosen for its ability to withstand repeated switching without degradation, as well as its resistance to oxidation and welding. As a result, the PIT ESB1.2 delivers long service life even in high-duty-cycle environments.

With an ambient temperature tolerance of -30 °C to +85 °C, the device is designed for versatility across a wide range of operating conditions. From cold storage facilities to high-heat production environments, it maintains reliable switching performance, making it suitable for industries as diverse as automotive manufacturing, packaging, logistics, and food processing. Its pollution degree 3 clearance and creepage rating further enhance its suitability for challenging industrial conditions, ensuring safe insulation even in environments where dust or contaminants may be present.

The compact and modular design of the PIT ESB1.2 allows for easy integration into Pilz E-STOP assemblies and other control devices. It is engineered for straightforward installation and replacement, reducing downtime during maintenance and providing flexibility for system expansion or reconfiguration.

In practical applications, the PIT ESB1.2 ensures operators have a dependable means of halting machinery immediately in unsafe conditions. By offering dual N/C contacts, it provides redundancy and enhances the reliability of safety circuits, ensuring that both personnel and equipment are safeguarded.

In summary, the Pilz PIT ESB1.2 Safe Contact Block 2 N/C is a robust, standards-compliant, and durable safety device designed for integration into emergency stop and safety circuits. With its dual N/C contacts, silver-nickel construction, wide operating temperature range, and adherence to EN 60947-5-1, it delivers dependable performance and ensures the highest levels of safety in industrial automation.