The Schneider Electric M9F54145 Miniature Circuit Breaker (MCB) is a single-pole device designed for reliable overcurrent protection in low-voltage electrical distribution systems. This breaker, part of the Schneider Electric Acti9 series, features a rated current of 45A and incorporates a Z-curve tripping characteristic for precise response to specific fault conditions, commonly found in control panel assemblies and branch circuit protection.

Technical details

• Series: Acti9 (derived from M9F part number prefix)
• Poles: 1
• Rated Current: 45A
• Tripping Curve: Z-curve
• Voltage Rating: Typically designed for standard low-voltage AC circuits; specific voltage rating (e.g., 230V/400V) should be verified against manufacturer datasheet for the exact application.
• Interrupting Capacity: Specific interrupting capacity (kA) should be verified against manufacturer datasheet.
• Connection Type: Screw terminals for secure conductor termination.
• Mounting: DIN rail mountable for standard industrial enclosures.

Applications & compatibility

This Schneider Electric MCB is suitable for protecting circuits in a variety of industrial and commercial settings, including control cabinets for machinery, lighting circuits, and power distribution panels. Its Z-curve characteristic makes it particularly useful in applications where sensitive electronic equipment requires protection against fast-acting overcurrents without nuisance tripping from inrush currents.

Available from Industrial Automation Co as new, refurbished, or surplus stock, backed by a 2-year warranty with same-day shipping on in-stock items. Request a quote for the Schneider 54145 or contact our technical team for cross-reference assistance with compatible Acti9 components.