FMX-50

The Cooper Bussmann FMX-50 BK/FMX-50 circuit breaker is a reliable and robust electrical safety device designed for use in various industrial and commercial applications. This model is part of Cooper Bussmann's Fusible Molded Case Circuit Breaker (FMCCB) product line, which offers a flexible and economical solution for protecting electrical circuits from overcurrent conditions.

The FMX-50 BK/FMX-50 circuit breaker is rated for a continuous current of 50 amperes and a maximum interrupting current of 100,000 amperes. It comes in a molded case design, which provides a compact and rugged housing suitable for harsh environments. The breaker is suitable for use with single-phase, 3-wire, 3-wire delta, 4-wire delta, and 3-phase, 4-wire delta electrical systems.

The FMX-50 BK/FMX-50 circuit breaker features a time-delay, current-limiting trip unit that provides excellent short-circuit protection while minimizing the impact on the electrical system during normal operation. It also includes a ground fault detection and tripping capability, making it an ideal choice for applications where ground fault protection is essential.

The breaker's trip unit is designed to provide rapid and accurate response to overcurrent conditions, ensuring that the electrical circuit is disconnected from the power source before damage occurs. The trip unit is also designed to be easily reset, allowing for quick restoration of power once the fault has been corrected.

The Cooper Bussmann FMX-50 BK/FMX-50 circuit breaker is suitable for use in a wide range of applications, including industrial machinery, commercial buildings, and electrical power distribution systems. It is also available in various configurations, including NEMA 1, NEMA 3R, and NEMA 3RX enclosures, to accommodate different installation requirements.

The FMX-50 BK/FMX-50 circuit breaker is designed to meet the highest standards of electrical safety and reliability. It is UL listed and compliant with UL 1699, UL 489, and UL 1446 standards, ensuring that it meets the rigorous testing and certification requirements for safety and performance.

In summary, the Cooper Bussmann FMX-50 BK/FMX-50 circuit breaker is a versatile and reliable electrical safety device that offers excellent short-circuit protection, ground fault detection, and easy resetting. It is suitable for use in a wide range of industrial and commercial applications and is designed to meet the highest standards of electrical safety and reliability.

The Cooper Bussmann FMX-50 BK/FMX-50 is a circuit breaker designed for industrial and commercial applications. Here are some pros and cons of buying this circuit breaker:

1. High Short-Circuit Current Rating: The FMX-50 circuit breaker can handle short-circuit currents up to 100,000 amperes, making it suitable for applications with high power demands.

2. Robust Design: The circuit breaker has a durable construction, with a copper alloy contact material that ensures long-lasting performance.

3. Easy Installation: The FMX-50 circuit breaker comes with a plug-in design, making it easy to install and replace.

4. Safety Features: The circuit breaker includes overload, short-circuit, and ground fault protection, ensuring the safety of the electrical system and the users.

5. Low Maintenance: The circuit breaker requires minimal maintenance, reducing downtime and labor costs.

1. High Cost: The FMX-50 circuit breaker is more expensive than some other circuit breakers on the market.

2. Large Size: The circuit breaker is larger than some other circuit breakers, requiring more space for installation.

3. Complex Wiring: The circuit breaker requires complex wiring, which may require the assistance of an electrician.

4. Limited Applications: The circuit breaker is not suitable for all applications, as it is designed for industrial and commercial use.

The Cooper Bussmann FMX-50 BK/FMX-50 circuit breaker is a reliable and robust solution for industrial and commercial applications with high power demands. Its high short-circuit current rating, safety features, and easy installation make it an attractive option. However, its high cost, large size, complex wiring, and limited applications may be drawbacks for some buyers.

If you have an industrial or commercial application with high power demands and require a circuit breaker with robust safety features and easy installation, the Cooper Bussmann FMX-50 BK/FMX-50 circuit breaker is a good option to consider. However, if cost is a significant factor, or if your application requires a smaller or simpler circuit breaker, you may want to explore other options.

Details:

Bussmann bk/fmx-50 1 each: .

specifications indusswitch:

• brand: Cooper Bussmann
• mpn: Fmx-50

offer indusswitch:

• options: ship-to-home
• availability: in stock
• sold #: 10
• started: december 13, 2025
• prices: $9.57–$27.80
• item condition:
  • New
  • New other (see details)
  • Unspecified

returns indusswitch:

• method: money back
• policy: returns accepted
• time: 30 days
• paid by: buyer

payments indusswitch:

• credit card: diners-club
• wallet: apple-pay
• other

shipping indusswitch:

• carrier: usps, ups
• class: standard, expedited, one-day
• type: fixed
• transit: 4-7 days
• service: standard, usps priority mail, ups 2nd day air, ups next day air

seller indusswitch:

• # reviews: 75803
• rating: 99.2%
• city: clawson, michigan

general indusswitch:

• category: Business & Industrial > Electrical Equipment Supplies > Switches > Accessories

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