FURNAS 49ABT4 Contact Kit

( Brand: Furnas ), ( Manufacturer Part Number: 49ABT4 ), ( Type: Auxiliary Contact ), ( Unit Type: Unit ), ( Country Of Origin: United States )

Review FURNAS Auxiliary Contact Kit

The **Furnas 49ABT4 Contact Kit** is a high-performance, precision-engineered solution designed to enhance the reliability, efficiency, and longevity of your electrical systems, particularly in industrial, commercial, or high-demand residential applications. This contact kit is meticulously crafted to deliver superior conductivity, durability, and resistance to wear, ensuring seamless operation in demanding environments where electrical connections are critical. The kit features **silver-plated copper contacts**, which provide an optimal balance of conductivity and corrosion resistance, reducing the risk of arcing, pitting, and premature failure. Each contact is engineered with a **spring-loaded mechanism** that maintains consistent pressure, preventing loose connections that can lead to voltage drops, overheating, or equipment malfunctions. The robust construction of the 49ABT4 series incorporates **high-grade stainless steel housing**, offering exceptional resistance to mechanical stress, vibration, and environmental factors such as moisture, dust, and temperature fluctuations making it ideal for use in harsh or fluctuating conditions. Whether integrated into circuit breakers, relays, or other electrical control systems, this contact kit ensures reliable signal transmission and power distribution, minimizing downtime and maintenance requirements. Its modular design allows for easy installation and replacement, streamlining maintenance procedures while upholding the integrity of your electrical infrastructure. With a focus on both performance and longevity, the Furnas 49ABT4 Contact Kit is an indispensable component for professionals seeking dependable, high-quality electrical connections in a wide range of applications.

The **Furnas 49ABT4 contact kit** is a popular choice for high-performance engines, particularly in racing and modified applications. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the Furnas 49ABT4 Contact Kit**

1. **High Performance and Durability**

The 49ABT4 is designed for aggressive use, making it ideal for forced induction applications (turbocharged or supercharged engines). It is built with high-quality materials, including advanced alloys and precision machining, which enhance its strength and longevity under extreme stress.

2. **Compatibility with High RPM and Power Outputs**

This contact kit is engineered to handle high rotational speeds and power levels, making it suitable for engines pushing 600 horsepower. It is commonly used in performance builds where reliability under heavy loads is critical.

3. **Precision Engineering and Fitment**

Furnas is known for its meticulous attention to fitment, ensuring that the contact kit integrates seamlessly with the engine s existing components. The 49ABT4 is designed to work with a variety of engine configurations, including those with aftermarket upgrades like forged internals or high-flow heads.

4. **Warranty and Customer Support**

Furnas offers a solid warranty on its products, which can provide peace of mind for buyers. Their customer support is generally responsive, and they provide detailed installation guides and technical assistance to help users avoid common mistakes.

5. **Popularity in Racing and Modding Communities**

The 49ABT4 is widely used in racing circles, particularly in drag racing and time attack applications. Its reputation for reliability in high-stress environments makes it a trusted choice among enthusiasts and professional tuners.

6. **Cost-Effective for High-Performance Needs**

While not the cheapest option on the market, the 49ABT4 offers a balance between performance and affordability compared to some premium aftermarket contact kits. Its durability often justifies the investment for serious builders.

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### **Cons of the Furnas 49ABT4 Contact Kit**

1. **Limited Stock Engine Compatibility**

The 49ABT4 is not a universal fit. It is specifically designed for certain engine displacements and configurations, particularly those with a 4.0-inch bore or similar dimensions. Buyers must ensure their engine s specifications match Furnas recommendations to avoid compatibility issues. Mismatches can lead to poor performance or even damage.

2. **Requires Professional Installation or Expertise**

While Furnas provides installation guides, this contact kit is not a plug-and-play solution. It demands precise machining, alignment, and tuning to function optimally. Inexperienced builders may struggle with installation, potentially leading to costly mistakes or failure. Professional installation is highly recommended.

3. **Potential for Overkill on Lower-Power Applications**

For engines running at moderate power levels (e.g., stock or mildly modified), the 49ABT4 may be overkill. The added cost and complexity might not be justified unless the engine is pushing significant horsepower or RPMs. In such cases, a more modest contact kit could suffice.

4. **Maintenance and Upkeep**

High-performance contact kits like the 49ABT4 require regular maintenance to ensure longevity. This includes checking for wear, proper lubrication, and monitoring for signs of stress or failure. Neglecting maintenance can lead to premature failure, especially under aggressive driving conditions.

5. **Limited Availability and Lead Times**

Furnas products can sometimes face delays in shipping or limited stock, depending on demand and production schedules. Buyers should plan ahead and account for potential wait times, especially if they are building an engine on a tight timeline.

6. **Potential for Voiding Warranty with Modifications**

If the engine has aftermarket modifications (e.g., custom crankshafts, exotic materials, or aggressive tuning), some warranties may be voided. It s essential to clarify warranty terms with Furnas before purchasing, particularly if the engine is heavily modified.

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### **Conclusion**

The **Furnas 49ABT4 contact kit** is a robust and high-performance choice for engines pushing significant power, particularly in racing or heavily modified applications. Its strengths lie in its durability, precision engineering, and compatibility with aggressive setups. However, it is not a one-size-fits-all solution and requires careful consideration of engine specifications, installation expertise, and maintenance demands.

- Engines running 600 horsepower or high RPMs.

- Builders with experience in performance engine work or those willing to invest in professional installation.

- Applications where reliability under extreme conditions is critical (e.g., drag racing, time attack, or street-legal high-performance builds).

For less demanding applications or engines with lower power outputs, a more modest contact kit might be a more practical and cost-effective choice.

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### **Recommendation**

If you are building an engine that meets the 49ABT4 s specifications and plan to run it at high power levels, this kit is an excellent investment. Ensure the following before purchasing:

1. **Verify compatibility** with your engine s displacement, stroke, and other critical dimensions.

2. **Budget for professional installation** if you lack experience with high-performance engine work.

3. **Plan for maintenance** to maximize the kit s lifespan.

4. **Consider your power goals** if your engine is not pushing significant horsepower, a more conservative contact kit may be sufficient.

For most serious performance builds where reliability and power are priorities, the Furnas 49ABT4 is a well-regarded and trusted choice. However, always weigh the pros and cons against your specific needs to make the best decision for your project.

Details:

Normally Open, Current Rating 10 Amps Continuous, voltage Up to 600V AC, NEMA Size Compatibility through 4, Mounting Position Left or Right Side Mount, Connection Type Screw Terminals. Minor cosmetic wear scratches, scuffs, etc. Original condition required. Signs of handling or installation.

At Autos electrical, we prioritize your safety and satisfaction. Satisfaction Guaranteed. Item may exhibit. Fast and Secure Delivery.

Accurate , high-quality images, and prompt issue resolution. Response time: within 24 hours. Secure and Convenient. Functional and reliable, with some cosmetic imperfections.

Feature Specification Details, Manufacturer Furnas Siemens, model Number 49ABT4, Contact Configuration 4 N.O. Pre-owned, thoroughly tested, and fully functional.

part #: 49abt4 price

• $9.99

specifications automationjack:

• brand: Furnas
• mpn: 49abt4
• type: Auxiliary Contact
• unit type: Unit
• country of origin: United States

general automationjack:

• Business Industrial > Industrial Automation Motion Controls > Other Automation Equipment
• condition: Used

offer automationjack:

• best offers: True
• started: May 2, 2026
• sold: 0
• quantity: 1
• options: Ship-to-home
• availability: In Stock

payments automationjack:

• other
• wallet: Paypal
• credit card: Diners-club

shipping automationjack:

• carrier: UPS
• service: UPS Ground
• type: Fixed
• class: Standard
• transit: 5-11 Days
• cost: $0.00

seller automationjack:

• # reviews: 2177
• city: Stone Mountain, Georgia
• rating: 99.7%

returns automationjack:

• method: Money back
• policy: Returns Accepted
• time: 30 Days
• paid by: Buyer

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