21-B178SL6 | Circuit Breaker

The 21-B178SL6 Circuit Breaker is your go-to industrial protection device when exact compatibility matters. Identified by its part number, this breaker is designed for maintenance, retrofit, and replacement projects where matching specifications are non‑negotiable.

Why the part number matters: all critical details—ratings, trip characteristics, mounting style, and fit—are defined by 21-B178SL6. This means you’re not guessing about whether it will work with your panel or equipment; you’re aligning with a proven specification designed for seamless integration.

Key benefits at a glance

• Precise compatibility—useful in retrofits and replacements where exact specs are required to maintain protection and performance.
• Streamlined procurement—the part number is the definitive reference for matching your existing hardware, reducing order errors.
• Reliable protection—designed to provide consistent overcurrent protection in industrial applications when paired with the correct ratings.

Use cases

• Maintenance on existing equipment powered by circuits protected by the 21-B178SL6 family.
• Retrofits where legacy panels require a precise, compatible circuit-breaker replacement.
• Replacement of a failed breaker in systems that specify 21-B178SL6 as the compatible part number.

What to know before you purchase

Refer to the 21-B178SL6 part number for exact specifications. Confirm fit and ratings with the official datasheet or equipment manufacturer documentation before ordering to ensure seamless compatibility with your panel, bus, and wiring scheme.

Practical guidance for installers

• Cross-check mounting format and terminal configuration against your panel’s design.
• Verify voltage and current ratings align with your circuit requirements and protection plan.
• Adhere to safety standards and shutdown procedures when replacing or retrofitting breakers in live equipment.

Choosing the 21-B178SL6 means prioritizing precise compatibility and dependable protection, backed by a clear, part-number–driven specification path. If your project hinges on exact specs and reliable interchangeability, this circuit breaker is tailored to meet those exacting demands.