Eaton Bussmann HM25030-3SR 3-Pole Fuse Block 0-30 A Class H/K 10 kAIC

Description

Product Overview

The Eaton Bussmann Series HM25030-3SR is a high‑quality 3‑pole modular fuse block engineered for demanding electrical environments. Constructed with robust polymer housing and precision‑molded terminals, it offers a reliable 0‑30 A current rating while meeting Class H and Class K standards for thermal endurance. The fuse block features a 10 kAIC short‑circuit rating, ensuring it can safely interrupt high fault currents without damage. Its compact dimensions—just 3.2 x 2.9 x 2 inches—make it the narrowest width available on the market, allowing designers to maximize panel real estate. The unit is compatible with standard DIN‑rail mounting as well as panel‑mount configurations, providing versatile installation options for a wide range of applications. Optional IP20 finger‑safe, high‑clarity see‑through covers are available, enabling quick visual inspection of wire terminations and thermography measurements without the need to remove the block. The integrated fuse clip reinforcing spring minimizes temperature rise and maintains consistent surface contact throughout the service life, delivering dependable performance in harsh industrial settings.

Usage

This fuse block is designed for use in industrial control panels, load centers, motor control centers, and any electrical distribution system that requires precise over‑current protection. Its 3‑pole configuration simplifies wiring by consolidating three phases into a single, space‑saving unit, reducing the overall panel footprint. The Class H/K rating makes it suitable for environments with elevated ambient temperatures, such as manufacturing facilities, processing plants, and outdoor enclosures. The optional IP20 see‑through cover is especially valuable for maintenance personnel who need to verify proper wire insertion or perform thermographic analysis without disassembly, thereby improving safety and reducing downtime. The DIN‑rail mounting system allows for rapid installation and easy replacement, while the panel‑mount option provides added flexibility for custom panel designs. Whether used in new construction or retrofitting existing equipment, the HM25030-3SR delivers consistent protection and reliable operation.

Why Choose Us

Choosing the Eaton Bussmann HM25030-3SR means selecting a product backed by decades of industry expertise and a reputation for durability. Each fuse block undergoes rigorous testing to verify compliance with IEC standards, guaranteeing performance under extreme fault conditions. The reinforced spring mechanism ensures that the fuse maintains optimal contact, reducing the risk of overheating and extending the component’s lifespan. Our optional IP20 covers are engineered with high‑clarity materials that resist yellowing, providing long‑term visibility for inspections. Additionally, Eaton offers comprehensive technical support and a responsive after‑sales service team ready to assist with installation guidance, troubleshooting, and warranty claims. By integrating this fuse block into your system, you benefit from reduced panel size, enhanced safety features, and the peace of mind that comes from using a trusted, globally recognized brand.

Key Features

• Compact 3‑pole design saves valuable panel space while delivering 0‑30 A protection.
• Class H/K rating ensures reliable operation in high‑temperature environments.
• 10 kAIC short‑circuit capacity provides robust fault handling for industrial applications.
• Optional IP20 see‑through cover enables quick visual checks without removing the block.
• Dedicated Eaton support team offers expert assistance and reliable after‑sales service.

FAQ

What does the Class H/K rating mean?

Class H and Class K ratings indicate the fuse block’s ability to operate safely at elevated ambient temperatures, typically up to 70 °C for Class H and 85 °C for Class K, making it suitable for harsh industrial conditions.

Can the fuse block be mounted on a DIN rail?

Yes, the HM25030-3SR is designed for standard DIN‑rail mounting, allowing for quick installation and easy replacement within a panel.

Is the optional IP20 cover required?

The IP20 cover is optional but highly recommended for applications where frequent visual inspection or thermographic analysis is needed, as it provides a clear view of the terminations without exposing live parts.

What is the short‑circuit rating of 10 kAIC?

A 10 kAIC rating means the fuse block can safely interrupt fault currents up to 10 kiloamperes, protecting the circuit from severe over‑current events.

How does the reinforcing spring improve performance?

The spring maintains consistent pressure on the fuse, reducing temperature rise and ensuring reliable electrical contact throughout the fuse’s service life, which enhances overall durability.