Square D EJB26030 - 30 A, 600 V, 2-Pole Bolt-On Circuit Breaker | AmpState

The Square D EJB26030 is a 30A, 600V, 2-pole bolt-on molded case circuit breaker engineered to deliver reliable overcurrent and short-circuit protection in panelboards and load centers. With a robust bolt-on mounting design, it creates a solid, vibration-resistant connection to the bus, helping to maintain uninterrupted protection in busy electrical enclosures.

• Secure bolt-on mounting: A rigid connection that minimizes movement and loosening in environments with vibration or frequent door cycling in panel enclosures.
• Thermal-magnetic trip unit: Combines a thermal element for stable protection against gradual overcurrent with a magnetic element for rapid disconnection during high-energy faults, delivering repeatable protection across temperature and load conditions.
• OEM-compatible: Designed to pair with matching Square D OEM load centers and panelboards, making replacements and upgrades straightforward without sacrificing safety or performance.
• Versatile applications: Ideal for residential, commercial, and light-industrial installations requiring dependable branch circuit protection and clean disconnects.
• 2-pole design: Provides simultaneous disconnection of both conductors in a circuit, suitable for 240V-range circuits and balanced protection of multi-wire circuits.

The EJB26030 specification highlights its purpose and capabilities: a 30-amp, 600-volt rating in a two-pole, bolt-on molded case format. This combination is well-suited for protecting feeders, branch circuits, and critical loads in panelboards and load centers where secure mounting and robust protection are essential.

Why this matters in real-world use

In residential panels, it supports reliable protection for circuits feeding essential appliances and outlets, reducing nuisance trips caused by minor voltage fluctuations. In commercial and light-industrial settings, its bolt-on construction stands up to vibrations and crowded wiring environments, while the thermal-magnetic trip unit ensures fast response to short circuits, helping to minimize damage and downtime.

Practical considerations and tips

• Verify that your panelboard or load center is compatible with a 2-pole, bolt-on molded case breaker in the EJB26030’s 30A, 600V rating before installation.
• When replacing an existing breaker, confirm the matching OEM panel is designed for this line and trip profile to maintain coordinated protection and labeling accuracy.
• Plan for secure torque when securing the breaker to the bus to maintain the vibration-resistant connection over the life of the installation.
• Use this breaker for branch circuits that require solid overcurrent protection and clear, decisive trip behavior in both normal and fault conditions.

Specifications at a glance

• Manufacturer: Square D
• Part Number: EJB26030
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 30A
• Voltage Rating: 600V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Whether you’re upgrading an aging panel, installing new equipment in a commercial space, or stocking parts for a facilities team, the Square D EJB26030 delivers targeted, dependable protection with the mounting robustness and trip precision that professional electricians rely on.