Siemens | HHJD62B300L | Circuit Breaker | 300A | 2-Pole | 600V

Siemens HHJD62B300L circuit breaker is engineered to deliver dependable protection for demanding electrical circuits. With a robust 300 amp rating, a two-pole design, and a 600-volt capability, this unit is built to handle the needs of commercial and industrial panels while guarding wiring and equipment from overloads and short circuits. When you’re replacing or retrofitting, this part number serves as the most definitive reference for compatibility and performance.

Key specifications

• Amperage: 300A
• Poles: 2-Pole
• Maximum Voltage: 600V
• Part number: HHJD62B300L

Notes: Confirm fit and ratings before ordering. The part number HHJD62B300L is the best reference for compatibility with your panel and system requirements.

Why this Siemens breaker stands out

• Precise 2-pole protection: Simultaneously interrupts both hot legs to minimize arc exposure and ensure coordinated shutoff for safer, more reliable circuit protection.
• High-load reliability: Designed to safely interrupt and protect substantial electrical loads common in commercial and industrial setups, helping prevent damage to wiring and connected equipment.
• Clear compatibility anchor: The HHJD62B300L designation provides a straightforward cross-reference for replacement or retrofit projects, reducing guesswork during panel upgrades.

Ideal use cases

• Maintenance and replacement in existing Siemens panels that require 300A, 2-pole, 600V protection.
• Retrofit projects where upgrading protection to a higher amperage is necessary without changing the entire breaker family.
• New installations in systems designed for 600V operation where reliable, coordinated pole protection is essential.

Installation and compatibility tips

Before purchasing, verify that your panel’s labeling and bus configuration align with the HHJD62B300L specifications. Use the part number to cross-check compatibility with your panel model and ensure the 300A/2-Pole/600V ratings match the circuit being protected. For best results, consult your electrical schematics and the panel manufacturer’s retrofit guidelines to confirm mounting, terminals, and clearances align with this Siemens unit.