EC3030 - 30Amp Circuit Breaker

EC3030 - 30 Amp Circuit Breaker

The EC3030 circuit breaker is a 30-amp, 3-pole molded case breaker used in electrical distribution systems that require an EC frame device. It provides protection against overloads and short circuits in three-phase circuits and is commonly installed in panelboards where this breaker style was originally specified. When a breaker in an existing EC-frame system needs to be replaced, matching the frame type and electrical ratings helps maintain proper panel compatibility. The EC3030 is built for that exact purpose. Inside the breaker is a thermal-magnetic trip mechanism. The thermal element reacts to sustained overload conditions, while the magnetic component responds quickly when a short circuit occurs. This dual-response design allows the breaker to disconnect power when current rises beyond safe limits. The trip unit is fixed at 30 amps, meaning the rating cannot be changed or swapped out. This helps maintain consistent circuit protection based on the breaker’s intended design. With an interrupting rating of 10kA at 240VAC, the EC3030 is intended for systems operating within those electrical limits. It is also rated for 40°C ambient conditions, which aligns with typical indoor electrical installations. Load terminals are included with the breaker, supporting installation in compatible equipment. Like many molded case breakers used in established electrical systems, the EC3030 is built with durable components intended for long service life when used within its rated specifications.

Key Features and Benefits

• 30 amp rating for branch circuit protection
• 3 poles designed for three-phase electrical systems
• Thermal-magnetic trip mechanism helps respond to overloads and short-circuit conditions
• 10kA interrupting capacity at 240VAC
• EC frame construction for compatibility with matching panelboards and equipment
• Fixed, non-interchangeable trip unit set to 30 amps
• 40°C ambient temperature rating suitable for common electrical room environments
• Load terminals included with the breaker
• Manufactured with durable internal components designed for long-term use

Technical Specifications

• Part Number: EC3030
• Amperage: 30A
• Poles: 3
• Voltage Rating: 240VAC
• Interrupting Capacity: 10kA @ 240VAC
• Trip Mechanism: Thermal-Magnetic
• Frame Type: EC
• Trip Unit: Non-interchangeable
• Ambient Temperature Rating: 40°C
• Load Terminals: Included
• Shipping Weight: 4.13 lbs
• Shipping Height: 6.0 in

Material Compliance and Certifications

• Manufacturing Materials: The EC3030 breaker is manufactured using materials commonly found in molded case circuit breakers, including insulated housing components and conductive internal contacts designed for controlled current interruption.
• Electrical Equipment Standards: Circuit breakers of this type are produced in accordance with electrical equipment standards used in commercial and industrial distribution systems. Installation should always follow applicable electrical codes and the specifications of the panelboard or equipment where the breaker is being installed.

Where It Works Best

• The EC3030 3-pole 30 amp circuit breaker is typically found in commercial buildings, industrial facilities, and institutional electrical systems that use EC-frame breakers in their distribution panels. It may be used for branch circuits feeding three-phase equipment, lighting distribution, or other electrical loads that require a 30-amp protective device.
• This breaker is most often installed when maintaining or servicing existing EC-frame panelboards, where matching the original breaker design helps ensure the device fits correctly and operates within the intended electrical ratings of the system.