EHD3090 - 90Amp Circuit Breaker

EHD3090 - 90 Amp Circuit Breaker

When you're dealing with electrical systems, you don't want surprises—you want something that works, every time you flip the switch. The Eaton EHD3090 molded case circuit breaker is built with exactly that in mind. Designed for 90-amp, three-phase applications, it gives you consistent, predictable protection against overloads and short circuits without overcomplicating your setup. Whether you're maintaining an existing panel or putting together a new system, this breaker fits in easily and does its job without demanding attention.

What makes the EHD3090 a go-to choice is its balance of performance and simplicity. It uses a thermal-magnetic trip unit (T186), which means it reacts appropriately whether the issue builds gradually or occurs suddenly. That kind of responsiveness helps protect your equipment—and just as importantly, helps avoid unnecessary downtime. Built on Eaton's well-known Series C platform, it's a familiar, trusted option for electricians and facility managers who prefer components they don't have to second-guess.

Key Features and Benefits

• 90 Amp Rating – Ideal for protecting moderate-load electrical systems
• Three-Pole Breaker – Designed for standard three-phase power applications
• Thermal-Magnetic Trip Unit (T186) – Smart response to both overloads and short circuits
• High Interrupting Capacity – Handles up to 18 kAIC at 240V and 14 kAIC at 480V
• Space-Efficient Design – Compact size makes installation easier in tight panels
• Series C Reliability – A widely used and trusted Eaton breaker platform

Technical Specifications

• Catalog Number: EHD3090
• Product Type: Molded Case Circuit Breaker
• Amperage Rating: 90 A
• Number of Poles: 3
• Trip Type: T186 Thermal-Magnetic
• Frame Type: F Frame (Complete Breaker)
• Frequency Rating: 50/60 Hz
• Interrupt Rating:
  • 18 kAIC @ 240 VAC
  • 14 kAIC @ 480 VAC
• Dimensions: 6 in (H) x 4.13 in (W) x 3.38 in (D)
• Weight: 4.35 lb
• Terminals: Load Side

Material Compliance and Certifications

• UL Listed – Meets recognized U.S. safety standards for circuit protection
• Manufactured to deliver consistent electrical performance and safe operation under load

Where It Works Best

The EHD3090 is right at home in commercial buildings, industrial facilities, and OEM equipment setups. It's commonly used in panelboards, distribution systems, and control panels where dependable three-phase protection is required. If you're running equipment that can't afford unexpected interruptions, this breaker earns its place quickly.