Eaton NHI-B-11-PKZ0 Auxiliary Contact, Side-Mounted, 1NO 1NC

The Eaton NHI-B-11-PKZ0 is a high-quality side-mounted auxiliary contact module engineered specifically for integration with PKZ0 motor protection circuit breakers. This component serves as a critical interface for monitoring the switching status of the main circuit breaker, providing reliable feedback to control systems or signaling devices. With its compact design and robust construction, it ensures seamless operation within industrial electrical panels and automation setups.

Advantages

This auxiliary contact offers exceptional reliability and ease of installation, allowing for quick side-mounting onto compatible motor protection circuit breakers without the need for complex tools. The inclusion of both normally open and normally closed contacts provides versatile configuration options for various control logic requirements. Its durable design is built to withstand demanding industrial environments, maintaining consistent performance and accurate status reporting over an extended service life.

Suitable for

• Industrial motor control centers
• Automation and process control systems
• Status monitoring of circuit protection devices
• Electrical panel signaling and feedback loops

This component may not be suitable for applications requiring high-current switching, as it is designed primarily for control and signaling purposes. It is also not compatible with circuit breakers outside the specified PKZ0 series or environments exceeding the defined thermal operating limits.

Key specifications

• Contact configuration: 1 Normally Open (NO) and 1 Normally Closed (NC)
• Mounting type: Side-mounted
• Operating temperature range: -25 °C to 55 °C
• Compatibility: PKZ0 motor protection circuit breakers

To install the auxiliary contact, ensure the motor protection circuit breaker is disconnected from the power supply. Align the module with the side of the circuit breaker housing and snap it into place according to the manufacturer's mechanical interface. Once secured, connect the control wiring to the designated terminals, ensuring that all connections are tightened to the specified torque to prevent loose contacts.

What to consider before purchase

• Verify compatibility with your specific PKZ0 circuit breaker model
• Ensure the control voltage requirements match your system design
• Confirm that there is sufficient physical space on the side of the breaker for mounting

For optimal performance and safety, always perform a functional test of the auxiliary contact after installation to verify that the status signaling correctly reflects the position of the main circuit breaker. Regularly inspect terminal connections during routine maintenance to ensure long-term reliability.