3MM312R12 CUTLER HAMMER Eaton Box

Review CUTLER HAMMER Eaton Corporation New In Box

Introducing the Eaton 3mm x 312R12 Cutler Hammer Heavy Duty Circuit Breaker. This circuit breaker is a reliable and efficient solution for protecting your electrical circuits against overcurrent, ensuring the safety and longevity of your electrical systems.

The Eaton Cutler Hammer 312R12 is a Type BC, single pole, reverse-acting circuit breaker, designed for use in residential and light commercial applications. It features a 3mm (No. 12) trip unit, which is suitable for applications with a current rating of up to 20 amperes. The breaker is rated for 240 volts, making it ideal for powering heavy-duty appliances and equipment.

The breaker is constructed from high-quality materials, including a copper alloy contact system that ensures low contact resistance and long-lasting performance. The contact system is also self-cleaning, which helps to reduce the risk of arcing and other forms of contact wear.

The Eaton Cutler Hammer 312R12 is designed to provide excellent overload protection, automatically tripping when the current flowing through the circuit exceeds the rated capacity. This helps to prevent overheating and the risk of electrical fires. The breaker is also equipped with a ground fault protection feature, which helps to prevent electrical shocks and other hazards caused by ground faults.

The breaker housing is compact and rugged, with a powder-coated finish that resists corrosion and wear. It is designed to be easily installed in standard electrical panels, with mounting holes that conform to the NEMA I-1 and I-2 panel mounting patterns. The breaker also features a removable trip unit, which makes it easy to replace the trip unit if it becomes worn or damaged.

The Eaton Cutler Hammer 312R12 circuit breaker is UL listed, ensuring that it meets the highest standards for safety and performance. It is also RoHS compliant, meaning that it contains no hazardous substances. With its superior quality, reliability, and ease of installation, the Eaton Cutler Hammer 3mm x 312R12 circuit breaker is an excellent choice for any electrical application where overcurrent protection is essential.

The Eaton CH3M312R12 Cutler Hammer 3-Phase Circuit Breaker is a crucial component in electrical systems that protect against overcurrent and prevent electrical fires. Here are some pros and cons of buying this specific Eaton breaker:

1. High Current Rating: This circuit breaker has a current rating of 300 amps, making it suitable for heavy-duty applications.

2. Type B Insulation: The Type B insulation system provides excellent arc-fault protection, ensuring a higher level of safety.

3. Easy Installation: Eaton's CH3M312R12 circuit breaker is designed for easy installation, saving time and labor costs.

4. Durable Construction: The breaker is built with high-quality materials, ensuring long-lasting performance and reliability.

5. UL Listed: The circuit breaker is UL listed, which means it has undergone rigorous testing and meets the safety standards set by Underwriters Laboratories.

1. Cost: The Eaton CH3M312R12 circuit breaker is more expensive than some other options in the market, which could be a deterrent for some buyers.

2. Size: This circuit breaker is larger than some other options, which could make it difficult to install in tight spaces.

3. Limited Applications: This circuit breaker is designed for specific applications, so it may not be suitable for all electrical systems.

The Eaton CH3M312R12 Cutler Hammer 3-Phase Circuit Breaker is a high-performance, reliable, and safe option for heavy-duty electrical applications. Its Type B insulation system provides excellent arc-fault protection, and its easy installation process saves time and labor costs. However, its cost and size may be a deterrent for some buyers, and it may not be suitable for all electrical systems.

If you have a heavy-duty electrical application that requires a high current rating and excellent arc-fault protection, the Eaton CH3M312R12 Cutler Hammer 3-Phase Circuit Breaker is a great option to consider. Its high-quality construction and UL listing ensure long-lasting performance and safety. However, if cost or size is a concern, or if your electrical application has different requirements, you may want to explore other options in the market.

Details:

Packaging and handling: items are safely eds packaged in custom shipping cartons for protection. Call to use a shipping service other than the ones listed. The product is used surplus. All products are guaranteed to be working but may show signs of use.

Part number 3MM312R12.

specifications buildymat:

• brand: Cutler Hammer
• mpn: 3mm312r12
• part type: Box

offer buildymat:

• started: march 20, 2026
• availability: in stock
• best offers: true
• sold #: 10
• prices: $75.00–$359.99
• item condition:
  • New
  • New – Open box
• options: ship-to-home
• in stock #: 5

general buildymat:

• category: Business & Industrial > Supplies > Building Materials

returns buildymat:

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

seller buildymat:

• # reviews: 195515
• city: 1 millennium dr, willingboro, nj 08046
• rating: 99.6%

shipping buildymat:

payments buildymat:

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