Square D | FHB36025 | Circuit Breaker | 25A | 3-Pole | 600V

The Square D FHB36025 is a 25A, 3-pole circuit breaker designed to deliver reliable overcurrent protection for 3-phase 600V systems. Built for maintenance, retrofit, and replacement work, this unit helps you quickly restore safe, compliant power in commercial or light-industrial panels where three-phase protection is essential.

• Exact part reference for compatibility: Identified by the part number FHB36025, making it easier to match with existing panels and upgrade components without guesswork.
• Three-pole configuration: Simultaneously protects and disconnects all three phases, improving safety and reducing the risk of uneven loading in 3-phase circuits.
• 25-amp rating for targeted protection: Limits current to protect wiring and equipment, while allowing necessary operation of motors and other loads common in commercial and industrial settings.
• 600V voltage rating: Suitable for high-voltage distribution environments where reliable interruption across multiple phases is required.
• Versatile installation scope: Ideal for panel retrofit projects, equipment upgrades, and service replacements where the existing FHB36025 or equivalent Square D devices are specified.

Ideal use cases

With its 25A, 3-pole, 600V specifications, this circuit breaker is well-suited for:

• Maintenance and retrofit work in commercial electrical panels that serve three-phase equipment
• Replacement of aging breakers in legacy distribution systems to restore protection without changing panel architecture
• New installations that require a precise 3-phase protective device with a proven Square D reliability

Why this matters for your project

Choosing a breaker by exact part number and specification helps you avoid compatibility pitfalls, spares you from unnecessary panel modifications, and keeps your electrical system compliant with industry standards. The FHB36025’s 3-pole, 600V design supports coordinated disconnection across all phases, which is critical for protecting motors, transformers, and other three-phase loads.

How to ensure the right fit

Before ordering, verify that your panel or enclosure requires a 3-pole, 25A, 600V breaker and that the part reference aligns with Square D compatibility. Use the FHB36025 as the definitive compatibility reference to minimize fit issues and downtime.

Practical installation and safety tips

• Always shut off main power and follow local electrical codes before replacing a breaker.
• Cross-check the panel model and bus configuration to confirm a precise fit with the FHB36025.
• Use the manufacturer’s instructions for torque and mounting practices to ensure a secure, reliable connection.
• If you’re unsure about compatibility or installation, consult a licensed electrician to prevent mis-wiring or protection gaps.