Square D EJB36025 25A 3-Pole 600 V Circuit Breaker Potential Transformer

Meet the Square D EJB36025 25A 3-Pole 600 V Circuit Breaker — a genuine Square D component built to protect three-phase power systems with precision. This part (Part Number EJB36025) delivers reliable interruption for overloads and faults, helping keep motors, panels, and critical equipment safe in demanding commercial and light-industrial environments. With a 25 A current rating, a three-pole design, and a 600 V maximum rating, it’s engineered to perform where dependable, coordinated protection matters most.

Key specifications

• Part Number: EJB36025
• Current rating: 25 A
• Poles: 3
• Voltage rating: 600 V

Why this breaker stands out

This 3-pole breaker is purpose-built for three-phase distribution, ensuring all phases trip together to minimize arc risks and equipment damage in the event of an overload or fault. As a genuine Square D product, it offers plug-compatible compatibility with Square D panels and associated protective devices, simplifying replacement and maintenance in existing systems. The 600 V rating expands its usefulness across a range of industrial power networks, providing a robust safeguarding solution for medium to large loads while maintaining clear electrical separation between phases. If your protection strategy involves integrating metering or protection schemes that use potential transformers, this unit is well-suited to coordinate with those configurations, helping you achieve accurate fault detection and reliable system operation.

Practical use cases

• Three-phase distribution panels in commercial buildings or light-industrial facilities that require balanced protection across all phases.
• Motor control centers, conveyors, and processing equipment where reliable interruption of 3-phase power is critical to prevent damage and downtime.
• Panel replacements or upgrades where a compatible, stamped Square D component is needed to maintain system integrity and code alignment.
• Protection configurations that rely on potential transformer-based metering or protection schemes, ensuring coordination between protection devices and monitoring equipment.

Installation and compatibility tips

• Verify that the panel or enclosure is designed for 3-pole protection and can accommodate a 25 A device with a 600 V rating.
• Replace like-for-like with the same part number (EJB36025) to ensure plug-in compatibility and minimal downtime.
• When integrating with metering or protection schemes involving potential transformers, confirm proper coordination so protection devices trip in a controlled, predictable sequence.
• Handle with standard electrical safety practices: de-energize, verify absence of voltage, and torque connections according to manufacturer guidelines.