Allen-Bradley 1489-A1D050 - 2A, 277VAC, 1-Pole, Circuit Breaker

Meet the Allen-Bradley 1489-A1D050—a compact, industrial-grade circuit breaker engineered for precise overcurrent protection in demanding electrical panels. With a 2A rating at up to 277VAC and a 1-Pole design, this breaker delivers dependable protection exactly where small control circuits and critical loads need it most.

Key specifications at a glance

• Current rating: 2A
• Voltage rating: 277VAC
• Poles: 1-Pole
• Type: Circuit Breaker
• Application: Industrial, commercial, and OEM environments requiring reliable overcurrent protection

Why this breaker matters

The 1489-A1D050 is designed for situations where the protection threshold must be exact and dependable. Its 2A rating makes it ideal for protecting control circuits, signaling lines, and small-motor loads without unnecessary trips on normal operation. The 277VAC rating aligns with common commercial and industrial distribution schemes, helping you safeguard panels and MCCs without over-spec’ing components.

Where it shines

• Panelboards and switchboards: Enables clean, reliable protection for centralized control circuitry.
• Control panels: Guards low-current control logic and peripheral loads with precise trip characteristics.
• Motor control centers (MCCs) and OEM equipment: Fits into existing 1489-series and similar layouts for streamlined maintenance and parts compatibility.

Practical usage tips

• Verify system voltage and load compatibility before installation to ensure the 277VAC rating matches your distribution scheme.
• Pair with matching bus configurations and enclosure space to maximize panel density and ease of replacement.
• Use in environments where quick, predictable interruption of fault currents protects both equipment and operators.

Who benefits most

Maintenance technicians, electrical engineers, and OEM designers working on industrial control systems will appreciate the precision, reliability, and space-efficient profile of this 1-Pole breaker. It’s a practical choice when you need targeted protection for small, sensitive loads within larger, 277VAC distribution networks.

Choose the Allen-Bradley 1489-A1D050 for focused, dependable overcurrent protection that keeps control circuits safe, panels organized, and equipment running smoothly in demanding environments.