GE SHD25B220 HI-Break Circuit Breaker

GE SHD25B220 HI-Break Circuit Breaker (2500A Frame / 2000A Trip)

The GE SHD25B220 is a heavy duty industrial molded case circuit breaker (MCCB) with an interrupting capacity of up to 15000 A for severe duty applications. This device is built on General Electric’s superior heavy-duty frame architecture and is rated for a sturdy 2500A frame, fitted with a 2000A solid-state trip unit.

This breaker is designed to offer basic short-circuit and overcurrent protection in high-fault main distribution switchboards and is able to withstand the extreme thermal and mechanical loads encountered in industrial facilities, commercial plants and maritime main switchboards.

Basic Design and Performance Data

The HI-Break designation provides high fault current interruption without the need for external current limiting fuses or structural modifications. It has a very complex arc-chute design and hefty copper contact structures. It quickly extinguishes high energy faults to preserve upstream power system co-ordination and protect downstream equipment.

Main Features

1. High-Interrupting Capacity: Designed to efficiently interrupt high fault currents in dense industrial grids.
2. Premium 2500A frame platform Provides great mechanical stiffness and excellent heat dissipation in constant full load environment.
3. Precision 2000A Trip Customization Advanced solid state logic to customize temporal current curves for tight system selectivity.
4. Rugged Built Quality: Arc tracking immunity built with premium-grade glass-reinforced thermoset composite housings.
5. Versatile accessory profile, supporting auxiliary switches, shunt trips and under voltage releases for remote automation systems.

Technical Specifications: GE SHD25B220

Compatible Switchgear & Enclosures

• GE Power Break / Power Break II Enclosures: Direct integration into standard 2500A high-ampere switchboard bays.
• Industrial Distribution Panels: Custom standard motor control centers (MCCs) and heavy manufacturing low-voltage switchgear.
• Marine Main Switchboards: Compatible with standard engineered compartments on commercial vessels, drillships, and offshore platforms.

Part Number Cross-References

• GE SHD25B220
• GE SHD-Frame 2500A
• Type SHD 3P 600V 2500A Frame / 2000A Trip

Primary Applications

• Marine Main Propulsion & Auxiliary Distribution: Used on ocean-going commercial vessels to isolate high-kilowatt alternator setups from downstream faults.
• Industrial Manufacturing Complexes: Provides reliable system protection for massive automotive plants, chemical refineries, and heavy processing zones.
• Data Center Infrastructure: Acts as a primary protection boundary for main incoming lines feeding large UPS modules.
• Commercial Power Distribution Switchgear: Integrated into high-rise infrastructure, hospital emergency power matrices, and water processing stations.

Marine Engineering Field Insights

1. Thermal Management in Enclosures: Operating a 2000A continuous load inside high-ambient engine control rooms or industrial plant spaces causes intense localized thermal buildup. Always check that the termination bus bolts are torqued down precisely to the manufacturer’s specification. Loose terminations create micro-arcs that cook solid-state trip components.
2. Regular Secondary Injection Testing: Electronic trip systems are stable, but damp marine or industrial atmospheres can cause analog drift over time. Run a secondary injection test during regular routine maintenance windows to confirm the selective trip curves match your system design.
3. Selective Coordination Verification: When setting up the dial parameters for the 2000A trip unit, double check your coordination analysis. Ensure downstream breakers clear localized circuit faults first before this 2500A frame clears the entire distribution segment.

Frequently Asked Questions

What is the difference between the Frame Rating and the Trip Rating on the GE SHD25B220?

The Frame Rating (2500A) is the exact physical and structural limit of the breaker housing and internal copper channel to safely pass current continuously without material breakdown. The Trip Rating (2000A) is the setpoint of operational logic defined by the internal trip module. The gadget will monitor and trip on the 2000A curve profile.

GE SHD25B220 Circuit Breaker for Marine Applications?

Yes. The sturdy design of the GE heavy-duty frame platform, along with its high mechanical shock survival rating and ability to withstand extreme climatic conditions, makes it a staple in commercial vessel switchgear layouts worldwide.

What diagnostic information comes with refurbished units?

All reconditioned machines are subjected to a full dismantling methodology. They are shipped with certified primary/secondary injection test sheets, contact resistance readings and high-potential insulation diagnostic test verifications.