NJ631125 | Circuit Breaker | 125A | 3-Pole | 600V | 30kA | Bolt-On

The NJ631125 is a rugged industrial circuit breaker designed for dependable protection in demanding 600V environments. With a 125A rating, three poles, and a sturdy bolt-on mounting design, this device is built for maintenance, retrofit, and replacement projects where precise specifications matter.

Key specifications

• Amperage: 125A
• Poles: 3-Pole
• Voltage: 600V
• Interrupting rating: 30kA
• Mounting: Bolt-On

Designed to protect three‑phase electrical systems, the NJ631125 offers reliable fault interruption up to 30kA, helping to minimize damage to equipment and reduce downtime in the event of a short circuit or overload. Its 600V rating makes it suitable for a wide range of industrial and commercial distribution applications.

Why this bolt-on circuit breaker stands out

• Secure, durable installation: The bolt-on mounting provides a solid, vibration‑resistant fit inside panelboards and switchgear, reducing the risk of loose connections over time.
• Clear compatibility reference: The part number NJ631125 serves as the best reference for matching panels and bus configurations, ensuring a straightforward replacement or retrofit.
• Targeted for retrofit and maintenance: Ideal when upgrading or replacing aging protection devices in existing systems without extensive rewiring.
• Three-pole protection: Balanced protection for three‑phase equipment, helping to maintain voltage stability and equipment longevity in industrial settings.

Use cases and ideal environments

• Maintenance and replacement in manufacturing lines, packaging facilities, and processing plants with 600V distribution.
• Retrofit projects where an exact 125A, 3-pole, 600V, 30kA bolt-on breaker is required to match existing gear.
• New installations in systems that demand robust fault current interruption while keeping a compact, bolt-on form factor.

How to verify before you buy

Before ordering, confirm fit and ratings align with your equipment. The NJ631125 part number is the most reliable reference for compatibility with your panelboard or switchgear, so cross-check it against your equipment documentation and any manufacturer mounting guidelines.