ET4033 - 30Amp Circuit Breaker

ET4033 - 30 Amp Circuit Breaker

When you’re maintaining an existing electrical system, the last thing you want is guesswork. The ET4033 molded case circuit breaker is built for exactly that situation—providing a straightforward, form-fit-function replacement for compatible F-frame setups. With a 30-amp rating and 3-pole configuration, it’s designed to handle three-phase power distribution while helping protect your equipment from overloads and short circuits within its rated limits. Rated at 14kA interrupting capacity at 480VAC, the ET4033 is well-suited for commercial and industrial environments where dependable circuit protection matters day in and day out. It’s designed to operate in standard conditions up to 40°C, making it a practical choice for electrical rooms, panelboards, and distribution systems already in place. The molded case construction helps protect internal components, while the overall build reflects the kind of durability electricians and facility managers rely on to keep legacy systems running smoothly. If you’re working on repairs, replacements, or routine maintenance, this breaker fits right into the job—no unnecessary changes, just the right specs where you need them.

Key Features and Benefits

• Easy Compatibility – Designed as a direct form, fit, and function replacement for F-frame systems
• 3-Pole Configuration – Ideal for supporting balanced three-phase electrical distribution
• 30 Amp Protection – Suitable for branch circuit protection in commercial and light industrial setups
• 14kA @ 480VAC Rating – Handles fault interruption within its specified capacity
• Molded Case Housing – Helps protect internal components from dust, debris, and incidental contact
• 40°C Ambient Rating – Built for standard operating environments
• Built to Last – Solid construction intended for long-term use in existing equipment

Technical Specifications

• Part Number: ET4033
• Poles: 3
• Amperage: 30A
• Interrupting Capacity: 14kA @ 480VAC
• Frame Type: F
• Temperature Rating: 40°C
• Breaker Type: Molded Case Circuit Breaker
• Approximate Shipping Weight: 4.5 lbs
• Height: 10.0 inches

Material Compliance and Certifications

• Produced in accordance with widely accepted industry standards for molded case circuit breakers
• Suitable for installations that follow NEC guidelines and similar electrical codes
• Constructed using materials designed for electrical insulation and heat management within rated conditions

Where It Works Best

The ET4033 is a strong fit for commercial buildings, industrial facilities, and institutional settings where maintaining existing electrical infrastructure is the priority. It’s commonly used in panelboards and distribution systems that require a 3-pole, 30-amp breaker rated for 480VAC. If you’re servicing or replacing components in a legacy setup, this breaker helps keep everything consistent and operating as intended without modifying the original configuration.