The Pilz PIT ESB2.1 Contact Block 1 N/C (part no. 400300) is a high-quality control and signal device designed to support safe and reliable operation of emergency stop (E-STOP) functions in industrial automation systems. As part of the Pilz PIT range, this contact block delivers robust performance, compliance with international safety standards, and long-term durability, making it an essential component in any safety-related control system.

At the heart of its design is a single normally closed (N/C) contact, which ensures that safety circuits are immediately interrupted when the E-STOP function is activated. This simple yet highly effective mechanism provides direct and dependable disconnection of hazardous machine functions, ensuring maximum protection for operators and equipment. The N/C configuration also allows easy integration into dual-channel or redundant safety systems, where high fault tolerance is required.

The device is manufactured to meet the stringent requirements of EN 60947-5-1, the international standard for low-voltage switchgear and controlgear. This compliance ensures that the PIT ESB2.1 delivers consistent and safe performance across a broad range of applications, giving system designers confidence in meeting regulatory and industry-specific safety obligations.

A key contributor to its reliability is the use of AgNi (silver-nickel) contact material. This combination offers the excellent conductivity of silver with the mechanical durability of nickel, resulting in contacts that resist welding, oxidation, and wear over long service lives. This ensures that the contact block can withstand repeated actuations without performance degradation, making it suitable for high-duty-cycle environments.

The wide operating temperature range of -30 °C to +85 °C enhances the versatility of the PIT ESB2.1, allowing it to perform reliably in both low-temperature facilities and high-temperature industrial environments. Combined with its pollution degree 3 clearance and creepage rating, the device is well-suited for environments where dust, humidity, or contaminants may be present, ensuring safe insulation and consistent switching.

The compact and modular design of the PIT ESB2.1 makes it easy to integrate into Pilz emergency stop assemblies and control panels. It supports quick installation and maintenance, reducing downtime during system upgrades or component replacement. Its proven reliability and compliance with safety standards make it an indispensable choice for industries such as automotive, packaging, logistics, food processing, and general manufacturing.

In summary, the Pilz PIT ESB2.1 Contact Block 1 N/C is a durable, standards-compliant, and dependable solution for safety-related control applications. With its N/C contact design, silver-nickel construction, wide temperature tolerance, and EN 60947-5-1 compliance, it ensures reliable emergency stop functionality and long-term protection for operators and machinery in demanding industrial settings.