HEATCRAFT 040-0166-37 Start Relay RVA2AE6D 946 U309 35A-400VAC

( Brand: Heatcraft ), ( Part Type: Start ), ( Manufacturer Part Number: 040-0166-37 )

Review HEATCRAFT 946 35a-400vac Start Relay

The Heatcraft 040-0166-37 RVA2AE6D 946 U309 35A-400VAC Start Relay is a crucial component in various HVACR (Heating, Ventilation, Air Conditioning, and Refrigeration) systems. This start relay is manufactured by Heatcraft, a leading name in the HVACR industry, known for its high-quality and reliable products.

This particular start relay model, 040-0166-37, is a part of the RVA2AE series. It is designed to handle a current of up to 35 Amperes and operates on a voltage range of 400VAC. The U309 designation signifies that this relay is suitable for use in industrial applications, making it a robust and durable solution for heavy-duty systems.

The RVA2AE6D 946 start relay comes with several essential features that ensure reliable operation. It is engineered with a contact rating of 10,000,000 cycles, which is an impressive number, indicating its long-lasting performance. The relay is also equipped with a built-in overload protection feature, which safeguards the system from potential damage caused by excessive current flow.

The relay housing is made of a robust and corrosion-resistant material, ensuring that it can withstand the harshest operating conditions. The terminals are gold-plated for enhanced conductivity and longer life. The relay also features a clear and easy-to-read labeling system, making installation and maintenance processes more efficient.

This Heatcraft start relay is a versatile component that can be used in various HVACR applications, including compressor starters, fan motors, and pump starters. Its compact size, combined with its robust design, makes it an ideal choice for space-constrained installations.

In conclusion, the Heatcraft 040-0166-37 RVA2AE6D 946 U309 35A-400VAC Start Relay is a reliable and robust solution for industrial HVACR applications. Its impressive contact rating, overload protection, and corrosion-resistant housing make it a long-lasting and efficient component that can handle even the most demanding operating conditions.

Pros and Cons of Buying a Heatcraft 040-0166-37 RVA2AE6D 946 U309 35A-400VAC Start Relay

The Heatcraft 040-0166-37 RVA2AE6D 946 U309 35A-400VAC Start Relay is an electrical component used to start motors in various heating, ventilation, and air conditioning (HVAC) systems. Like any other electrical component, it has its advantages and disadvantages. In this analysis, we will discuss the pros and cons of purchasing this start relay.

1. High-quality components: Heatcraft is a reputable brand known for producing reliable HVAC components. This start relay is no exception, as it is engineered with high-quality components that ensure long-lasting performance.

2. Rugged design: The start relay is designed to withstand harsh environmental conditions. Its rugged design makes it an excellent choice for industrial and commercial applications where reliability is crucial.

3. Easy installation: The start relay is relatively easy to install, as it comes with clear instructions and can be wired using standard connections.

4. Energy efficient: The start relay features a low-voltage design, which helps reduce energy consumption in HVAC systems.

5. Versatile: This start relay can be used with various motor types and sizes, making it a versatile option for different applications.

1. Cost: Compared to other start relays in the market, the Heatcraft 040-0166-37 RVA2AE6D 946 U309 35A-400VAC Start Relay may be more expensive.

2. Complex wiring: Depending on the specific HVAC system configuration, the wiring of this start relay may be more complex than other relays, which could lead to additional installation time and cost.

3. Limited compatibility: Although the start relay is versatile, it may not be compatible with all motor types and sizes. It is essential to verify compatibility before making a purchase.

In conclusion, the Heatcraft 040-0166-37 RVA2AE6D 946 U309 35A-400VAC Start Relay offers several advantages, including high-quality components, a rugged design, easy installation, energy efficiency, and versatility. However, it also comes with some disadvantages, such as a higher cost, complex wiring, and limited compatibility. Ultimately, the decision to purchase this start relay depends on the specific requirements of the HVAC system and the budget available.

If the HVAC system requires a reliable and durable start relay that can handle harsh environmental conditions and can be easily integrated with various motor types, the Heatcraft 040-0166-37 RVA2AE6D 946 U309 35A-400VAC Start Relay is an excellent choice, despite its higher cost and complex wiring. However, if a more cost-effective option with simpler wiring is preferred, alternative start relays from other reputable brands should be considered.

Details:

Fits Heatcraft 040-0166-37 RVA2AE6D 946 U309 35A-400VAC Start Relay.

part #: 040016637 price

• $263.78

specifications hvaccongo:

• brand: Heatcraft
• part type: Start
• manufacturer part number: 040-0166-37

general hvaccongo:

• HVAC Refrigeration > HVAC Refrigeration: Parts Accessories > HVAC Refrigeration Contactors
• condition: New

shipping hvaccongo:

• carrier: UPS, FedEx
• type: Fixed
• class: Standard, Expedited, One-day
• transit: 3-10 Days
• service: UPS Ground, FedEx Ground / FedEx Home Delivery, FedEx 2Day, Overnight
• cost: $0.00

returns hvaccongo:

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

payments hvaccongo:

• wallet: Apple-pay
• other
• credit card: Visa

offer hvaccongo:

• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: February 10, 2026
• quantity: 7

seller hvaccongo:

• city: Mount Prospect, Illinois
• # reviews: 54
• rating: 100.0%

Heatcraft 040-0166-37 Is Similar To:

• Heatcraft C4519 22543001 Hccy1c300vq106 Fits Auxiliary Contact Contactor (37.4% similar) Fits Heatcraft C4519 22543001 HCCY1C300VQ106 auxiliary contact, contractor...(February 10th, 2026)
• Heatcraft 22543002 Hcdy1z600vc106 C4822 Fits B600 Auxillary Switch Hartland Hcd (41.1% similar) Fits Heatcraft 22543002 HCDY1Z600VC106 C4822 B600 auxiliary switch, heartland CD contractor...(February 10th, 2026)
• Heatcraft 22509940 Fits Rva3an6l 690 U908 35a-400vac Relay Compressor Start (64.8% similar) Fits Heatcraft 22509940 RVA3AN6L 690 U908 35A-400VAC relay, compressor start...(February 10th, 2026)
• Heatcraft 040-0166-30 Fits Rva3an6d 942 U327 Potential Relay 35a 400vac (67.1% similar) Fits Heatcraft 040-0166-30 RVA3AN6D 942 U327 potential relay, 35A - 400VAC...(February 10th, 2026)
• Heatcraft Hcc-3xu01gk106 Fits C-1933-145659 Contactor 208-240 V 25 Amp 3 Pole (37.5% similar) Fits Heatcraft GCC-3XU01GK106 C-1933-145659 contractor, 208-240 v, 25 amp, 3 pole...(February 10th, 2026)
• Heatcraft 61432 Fits Mars 780 Contactor 208-240 Volt Coil 50 60hz 30 Amp (33.1% similar) Fits Heatcraft mars 780 61432 contractor, 208-240 volt coil, 50/60HZ, 30 amp, 3 pole...(February 10th, 2026)
• Heatcraft Rva21aikd Fits 731 U140 8200rvam25 Potential Relay Compressor (47.8% similar) Fits Heatcraft rva 21 aid 731 U140 8200RVAM25 potential relay, compressor...(February 10th, 2026)
• Heatcraft 165tm Fits 23490-71 49k0401 22r09 220305 Relay 240 Volt Coil (45.3% similar) Fits Heatcraft 165TM 23490-71 49K0401 22R09 220305 relay, 240 volt coil, DPT, 5 amp...(May 8th, 2026)