21-C145NFJ | Circuit Breaker | 225A

The 21-C145NFJ circuit breaker is a purpose-built, industrial-grade device crafted for reliability in demanding electrical environments. Designed to be used where maintaining power integrity matters—from routine maintenance to retrofits and replacements—this unit ensures your protection remains intact when you need it most.

Key specifications

• Amperage: 225 A
• Part number: 21-C145NFJ
• Application: Industrial circuits requiring precise overcurrent protection
• Compatibility note: Confirm fit and ratings before ordering; the part number is the best reference for compatibility.

What sets this breaker apart

• Exact 21-C145NFJ form factor and electrical characteristics, ensuring seamless substitution in panels and enclosures that specify this part number.
• Reliable protection against overcurrent events, helping prevent equipment damage and downtime in manufacturing lines, data centers, and large facilities.
• Maintenance-friendly design for retrofit projects, simplifying planning and reducing system downtime during upgrades.

Ideal for

• Equipment upgrades and panel retrofits that require a precise 225 A circuit protection device.
• Facilities seeking a verified, supplier-referenced replacement to maintain continuity of operations.
• Electrical engineers and technicians specifying exact part numbers for warranty and compatibility reasons.

Practical tips for ensuring a proper fit

• Cross-check the exact panel model, busbar arrangement, and terminal type against your equipment documentation.
• Use the part number 21-C145NFJ as the primary compatibility reference when sourcing spares or replacements.
• If in doubt, consult your panel manufacturer guidance or a qualified electrician to verify ratings before installation.