JCK-18R INDUSTRIAL MRO Bussmann Nsnp

Review INDUSTRIAL MRO Bussmann 390a Nsnp

The MRO JCK-18R circuit breaker from Bussmann is a versatile and reliable solution designed for various industrial applications. This circuit breaker is specifically categorized as a Type N, Single Pole, Non-Reversing, and Restorer (NR) type, making it suitable for protecting single-phase AC branches up to 390 Amperes (A) against overcurrent conditions.

The MRO JCK-18R circuit breaker features a rugged, cast aluminum construction that provides excellent heat dissipation and durability. This design not only ensures long-lasting performance but also enables the circuit breaker to operate effectively in harsh industrial environments.

The circuit breaker comes with a tripping mechanism that includes a Class R thermal magnetic trip unit. This trip unit is designed to trip the circuit breaker when the temperature of the circuit rises above a certain threshold, ensuring the protection of the electrical system against potential overheating.

The MRO JCK-18R circuit breaker is also equipped with a built-in short-circuit current limiting ability, which restricts the flow of short-circuit current to a safe level. This feature helps prevent the possibility of extensive damage to the electrical system, minimizing downtime and repair costs.

Additionally, this circuit breaker is designed to be easily installed and maintained. It features quick-connect terminals, which simplify the wiring process, and a removable trip unit, making it convenient to access for maintenance purposes.

The MRO JCK-18R circuit breaker is backed by Bussmann's commitment to quality and reliability. It has been tested and certified in accordance with various industry standards, including UL 1699, UL 489C, and ANSI/IEEE C37.122-1999.

In summary, the MRO JCK-18R circuit breaker from Bussmann is a robust and dependable solution for protecting industrial electrical systems against overcurrent conditions. Its rugged design, built-in short-circuit current limiting ability, and ease of installation and maintenance make it an excellent choice for various industrial applications.

The Bussmann MRO JCK-18R circuit breaker is a popular choice for industrial and commercial applications due to its reliability and safety features. Here are some pros and cons of buying this circuit breaker:

1. High Current Capacity: The Bussmann MRO JCK-18R circuit breaker can handle up to 390 Amps, making it suitable for heavy-duty applications.

2. Instant Tripping: This circuit breaker offers instant tripping, which helps to prevent damage to the electrical system and reduce downtime in case of a short circuit or overload.

3. Easy Installation: The MRO JCK-18R circuit breaker comes with mounting brackets and terminal screws, making it easy to install.

4. UL Listed: This circuit breaker is UL listed, which means it has been tested and certified to meet the safety standards set by Underwriters Laboratories.

5. Cost-Effective: Compared to other circuit breakers in the same class, the Bussmann MRO JCK-18R is cost-effective.

1. Size: The MRO JCK-18R circuit breaker is relatively large and may require additional space in the electrical panel.

2. Limited Applications: This circuit breaker is designed for specific applications and may not be suitable for all electrical systems.

3. Manual Reset: The MRO JCK-18R circuit breaker requires manual reset after tripping, which can be time-consuming in some cases.

The Bussmann MRO JCK-18R circuit breaker is a reliable and cost-effective option for heavy-duty applications that require a high current capacity and instant tripping. However, its size and manual reset feature may be a drawback for some users. Ultimately, the decision to buy this circuit breaker depends on the specific requirements of the electrical system and the budget constraints of the project.

If you are looking for a high current capacity circuit breaker with instant tripping and easy installation, the Bussmann MRO JCK-18R circuit breaker is a good option to consider. However, if size and manual reset are major concerns, you may want to explore other options in the market. It is always recommended to consult with a qualified electrician or electrical engineer before making a purchase decision.

Details:

Fuse: nsnp condition codes:: NSF new surplus factory sealed oem nsnp manufacturer package no UPI unused previously installed remain remanufactured like ump used or repaired about our product: industrial blue line special is an industrial surplus dealer. If another carrier such as DHL or ups is required to ship due certain shipping requirements, then the costs and requested may change.

specifications genpurrelays:

• brand: Industrial Mro
• mpn: Jck-18r

payments genpurrelays:

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

returns genpurrelays:

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

seller genpurrelays:

• rating: 99.8%
• city: knoxville, tennessee
• # reviews: 9574

offer genpurrelays:

• started: december 11, 2025
• quantity: 2
• availability: in stock
• options: ship-to-home
• sold #: 11
• best offers: true

shipping genpurrelays:

• type: calculated
• carrier: ups
• service: ups ground, ups 2nd day air, ups next day air
• class: standard, expedited, one-day
• transit: 2-6 days

general genpurrelays:

• category: Business & Industrial > Electrical Equipment Supplies > General Purpose Relays