Square D | FHF16030 | Circuit Breaker | 30A | 1-Pole | 277V

Square D FHF16030 Circuit Breaker — 30A, 1-Pole, 277V

When your panel demands precise protection for 277-volt circuits, the FHF16030 from Square D delivers reliable, field-ready performance. This single-pole breaker is specifically suited for maintenance, retrofit, and replacement projects where exact compatibility matters, helping you maintain safe, code-compliant electrical distribution without unnecessary downtime.

Key specifications

• Amperage: 30A
• Poles: 1-Pole
• Voltage rating: 277V
• Brand/Series: Square D (FHF family)
• Part reference: FHF16030

Why this breaker is the right fit

The FHF16030 is purpose-built for panels that require a precise 30-amp, single-pole, 277-volt protective device. It cleanly interrupts fault currents on a single hot leg, helping prevent overheating, insulation damage, and downstream equipment failure in commercial lighting, HVAC, or other 277V branch circuits. Its design supports straightforward installation in compatible Square D panels, making it an excellent choice for service technicians performing targeted replacements or panel upgrades.

Ideal use cases

• Maintaining existing 277V branch circuits that require 30A protection in commercial spaces.
• Retrofits where a like-for-like FHF16030 is needed to preserve panel labeling and protection schemes.
• Replacement of a failed or degraded 30A, 1-pole breaker in Square D systems without altering overall panel architecture.

Compatibility and procurement tips

Before ordering, verify that your installation aligns with the FHF16030 specifications. The part number is the most reliable reference for compatibility, ensuring the breaker matches the panel’s listed requirements and enclosure space. If in doubt, cross-check the panel’s label or manufacturer's compatibility guide to confirm fitment.

Practical installation notes: Schedule work with the main power disconnected and follow all local electrical codes. Ensure the 277V circuits are de-energized and that the replacement breaker is firmly seated in a compatible Square D panel bus to maintain proper electrical contact and service stability.