ONAN 307-1903 Reversing Contactor Transfer Switch
( Brand: Onan ), ( Manufacturer Part Number: 307-1903 ), ( Part Type: Switch Contactor Transfer ), ( Equipment Type: Contactor )
Review ONAN Reversing Contactor For Transfer Switch
The ONAN 307-1903 Reversing Contactor is an essential component for transfer switch applications in various power systems, particularly those used in generating sets and emergency power supplies. This contactor is designed to provide safe and reliable automatic transfer of electrical loads during power outages or generator start-up and shut-down.
The 307-1903 contactor boasts a robust and durable construction, featuring a corrosion-resistant cast aluminum housing with a powder-coated finish. This protective coating ensures the contactor can withstand the demands of various operating environments, including those subject to harsh weather conditions or heavy usage.
The contactor's reversing function is critical in ensuring a seamless transfer of power between the utility power source and the generator. With this feature, the ONAN 307-1903 contactor can reverse the connection between the power source and the load, allowing the generator to supply power when needed while minimizing the risk of backfeeding utility power lines.
The contactor's contacts are made of high-quality, bussed copper alloy, which offers excellent conductivity and durability. The contacts are designed to make and break the electrical circuit quickly and efficiently, ensuring minimal interruption to the power supply during transfer.
The 307-1903 contactor is designed for easy installation, with clear markings on the terminal posts that indicate the proper connection points for the utility power source, generator, and load. The contactor also includes a built-in overload relay with a rated capacity of 15 amps, which helps protect against overcurrent conditions that could potentially damage the contactor or other components in the power system.
The ONAN 307-1903 Reversing Contactor is suitable for various applications, with a voltage range of 120/240V AC, 50/60Hz, and a maximum current rating of 30 amps at 75 C. The contactor also includes a built-in solenoid coil that facilitates the automatic transfer of power, and it is compatible with various transfer switch solutions from ONAN and other manufacturers.
In summary, the ONAN 307-1903 Reversing Contactor is a versatile and reliable solution for transfer switch applications in various power systems. Its robust construction, reversing function, and ease of installation make it a popular choice for those seeking a safe and efficient way to transfer power during power outages or generator start-up and shut-down.
Onan 307-1903 Reversing Contactor: Pros and Cons
The Onan 307-1903 reversing contactor is a crucial component for transfer switches in generators, enabling seamless switching between utility power and generator power. Let's discuss the key advantages and disadvantages of this contactor:
Pros:1. Reversing function: The primary advantage of the Onan 307-1903 contactor is its reversing function. This feature allows the contactor to switch between utility power and generator power automatically, ensuring a continuous power supply and preventing power interruptions.
2. Durable construction: The contactor is built with high-quality materials, ensuring longevity and reliability. It can withstand harsh environments and heavy usage, making it suitable for industrial and residential applications.
3. Easy installation: The contactor is designed for easy installation, with clear instructions and a user-friendly design. It can be installed by a professional electrician or a DIY enthusiast, saving time and money.
4. Safety features: The contactor comes with built-in safety features, such as overload protection and short-circuit protection, ensuring the safety of the generator, transfer switch, and the electrical system.
Cons:1. Higher cost: Compared to standard contactors, the Onan 307-1903 reversing contactor is more expensive. However, its advanced features and durability justify the higher cost for many users.
2. Complex wiring: The reversing function of the contactor requires complex wiring, which can be confusing for some users. Proper installation and wiring are essential to ensure the contactor functions correctly.
3. Limited compatibility: The Onan 307-1903 contactor is designed specifically for Onan generators and transfer switches. It may not be compatible with other brands or models, limiting its versatility.
Conclusion:The Onan 307-1903 reversing contactor is an excellent investment for those who require a reliable and automatic transfer switch system. Its durability, safety features, and reversing function make it a worthwhile addition to any electrical system. While it may have a higher cost and complex wiring requirements, the benefits it offers outweigh the drawbacks for many users.
Recommendation:If you are in the market for a reversing contactor for your transfer switch, the Onan 307-1903 is a solid choice. Its advanced features and reliable performance make it a worthwhile investment for those who want a seamless power transfer system. However, ensure that you have the necessary expertise and resources to install the contactor correctly, or hire a professional electrician to do it for you.
Details:
This product is essential for controlling the direction of motor in switch, ensuring smooth and reliable operation. The 307-1903 Reversing Contactor is a specialized component designed specifically for Onan transfer switches.
part #: 3071903 prices
- $198.00-$3181.77
specifications generatormac:
- brand: Onan
- mpn: 307-1903
- part type: Switch Contactor Transfer
- equipment type: Contactor
shipping generatormac:
- type: Calculated
- class: Standard, One-day
- carrier: USPS, UPS
- service: USPS Ground Advantage, UPS Next Day Air
- transit: 3-8 Days
- cost: $7.67
general generatormac:
- Business Industrial > Light Equipment Tools > Generator Parts Accessories
- condition: New Open box
returns generatormac:
- policy: No Returns
payments generatormac:
- wallet: Apple-pay
- other
- credit card: Diners-club
offer generatormac:
- availability: In Stock
- best offers: True
- started: June 24, 2025
- sold: 0
- options: Ship-to-home
- quantity: 1
seller generatormac:
- # reviews: 18
- city: Des Plaines, Illinois
- rating: 100.0%
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