REF3B125 125A 3P 600V Circuit Breaker, Bolt-On | AmpState

REF3B125 is a 125 A, 3-pole, 600 V bolt-on circuit breaker built for reliable protection in panelboards, load centers, and electrical distribution systems. As a direct part-number match, it’s an ideal choice for maintenance teams, panel builders, and spare inventories where precise compatibility matters. Available from AmpState, this unit is ready to safeguard critical circuits with confidence.

Why the bolt-on design matters for this breaker: a secure, sturdy mount that stays put under vibration and routine maintenance, plus straightforward field installation in tight spaces. The bolt-on mounting supports solid electrical contact and durability in demanding environments, making it a practical choice for both retrofit projects and new panel installations.

Key specifications at a glance

• Part Number: REF3B125
• Amperage: 125 A
• Poles: 3
• Voltage Rating: 600 V
• Mounting: Bolt-On
• Product Type: Circuit Breaker
• Brand: Not Specified
• Applications: Panelboards, Load Centers, Electrical Distribution
• Availability: AmpState

This device is well-suited for:

• Maintenance and service scenarios where quick, accurate part-number matching reduces downtime
• Panel builders integrating robust protective devices into new or redesigned enclosures
• Electrical distributors stocking standard 3-pole, 600 V protection for diverse customer needs

How this item solves real-world problems — by delivering a precise 125 A, 3-pole, 600 V protection solution in a bolt-on format, it simplifies inventory management, speeds up replacements, and ensures consistent performance across panelboards and distribution equipment. The explicit part number (REF3B125) minimizes guesswork when sourcing spares for legacy systems or standard installations.

Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit, so you can proceed with confidence. AmpState is your source for availability, accurate matching, and dedicated support.