
D154959P01 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $101.99 | Condition is New, Trane RLY03715, D154959P01, Start Relay, 35 Amp Coil, 239 Pickup Voltage, SPST, FREE SHIPPING | 99.7% |
![]() | $116.81 | Condition is New, Trane D154959P01 Start Relay 35 Amp 400VAC Coil 239 Pickup Voltage SPST, FREE SHIPPING | 99.6% |

The Trane D154959P01 Start Relay is a crucial component in Trane HVACR (Heating, Ventilating, and Air Conditioning) systems, designed to provide the necessary electrical signal to initiate the compressor or fan motor start-up sequence. This start relay is specifically engineered to meet the demanding requirements of commercial and industrial applications.
The D154959P01 Start Relay features a 35400VAC coil, which is capable of delivering a powerful magnetic force to activate the contactor. The coil voltage is rated at 239 volts, making it suitable for use in various HVACR applications where higher voltage requirements are necessary. This relay is designed as a single-pole, single-throw (SPST) device, meaning it can only switch between two states: on and off.
The D154959P01 Start Relay is engineered to handle a maximum current of 35 amperes and a maximum operating voltage of 400 volts. This high current and voltage rating makes it suitable for powering large compressors and fans commonly found in commercial and industrial HVAC systems. The relay's robust construction ensures reliable operation even under heavy load conditions.
The D154959P01 Start Relay is designed for easy installation, with clear labeling on the contact terminals to facilitate proper wiring connections. The relay housing is made of durable materials to withstand the rigors of industrial environments, ensuring long-lasting performance.
In summary, the Trane D154959P01 Start Relay is a versatile and powerful component designed to meet the needs of commercial and industrial HVACR systems. Its 239V coil, 35A current handling capacity, and 400V maximum operating voltage make it a reliable and effective solution for initiating compressor or fan motor start-up sequences in demanding applications. The SPST design ensures simple and straightforward operation, while the robust construction guarantees long-term reliability.
Trane D154959P01 Start Relay: A Comprehensive Analysis
The Trane D154959P01 start relay is a crucial component in Trane heating and cooling systems. This 35400VAC coil 239 voltage, SPST, 35 amp, 400VAC start relay is essential for starting the compressor motor in these systems. In this analysis, we will discuss the pros and cons of purchasing this Trane start relay.
Pros:1. OEM compatibility: This start relay is manufactured by Trane, ensuring it is a perfect fit for Trane HVAC systems, minimizing the risk of compatibility issues.
2. Reliability: Trane is a well-known brand in the HVAC industry, and their components, including this start relay, are built to last, providing reliable operation.
3. Easy installation: The start relay is designed to be easy to install, allowing homeowners or professionals to replace the faulty component with minimal effort.
4. Safety: A faulty start relay can lead to safety hazards, such as compressor motor damage or electrical shock. Replacing it promptly with a reliable component like the Trane D154959P01 can help prevent these issues.
Cons:1. Cost: The Trane D154959P01 start relay may be more expensive than some aftermarket alternatives. However, the reliability and OEM compatibility may justify the additional cost for some consumers.
2. Availability: Depending on the location and availability from distributors, it might take some time to receive the start relay, potentially causing inconvenience for those in need of an immediate replacement.
In conclusion, the Trane D154959P01 start relay offers several advantages, including OEM compatibility, reliability, easy installation, and safety. However, it may come at a higher cost and have limited availability compared to aftermarket alternatives.
Recommendation:For those who prioritize the peace of mind that comes with using OEM components and the reliability offered by Trane, the Trane D154959P01 start relay is a solid choice for their HVAC system. However, if budget is a concern, consumers may consider exploring aftermarket alternatives while carefully evaluating their compatibility and reliability before making a purchase. Ultimately, the decision depends on individual priorities and circumstances.
Details:
specifications maxohvac:
- brand: Trane
- mpn: D154959p01
- type: Start Relay
payments maxohvac:
- credit card: discover
- wallet: apple-pay
- other
offer maxohvac:
- prices: $101.99–$116.81
- item condition: New
- started: november 26, 2025
- sold #: 15
- availability: in stock
- in stock #: 2
- options: ship-to-home
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
returns maxohvac:
- policy: returns accepted
- method: money back
- time: 30 days
- paid by: buyer
seller maxohvac:
- city: humble, texas
- # reviews: 1375
- rating: 99.5%
shipping maxohvac:
- carrier: usps, ups, fedex
- transit: 6-10 days
- service: usps ground advantage, ups ground, ups next day air saver, fedex ground / fedex home delivery
- type: calculated
- class: standard, one-day
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