
A1.86 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $5.95 | Condition is New – Open box, NEW SQUARE D A1.86 OVERLOAD HEATER ELEMENTS , FREE SHIPPING | 100.0% |
![]() | $8.99 | Condition is New – Open box, Lot of (2) NOS Square-D A1.86 Overload Relay Thermal Units, FREE SHIPPING | ![]() |
![]() | $9.89 | Condition is New – Open box, Square D A1.86 Overload Heater New A186 (TBI), FREE SHIPPING | ![]() |
![]() | $9.99 | Condition is New – Open box, NEW SQUARE D 1-A1.86 OVERLOAD RELAY THERMAL UNITS , FREE SHIPPING | 100.0% |
![]() | $10.00 | Condition is New – Open box, SQUARE D A1.86 HEATER NSNP, FREE SHIPPING | 99.8% |
![]() | $6.00 | Condition is New – Open box, Square D Overload Type A Heater Elements A0.49 - A17.9, shipping cost = $5.48 | 100.0% |
![]() | $11.69 | Condition is New – Open box, SQUARE D THERMAL UNIT A1.16-B4.15, FREE SHIPPING | 100.0% |
![]() | $7.95 | Condition is New – Open box, SQUARE-D A1.86 NSFB - HEATER ELEMENT, shipping cost = $5.00 | 99.6% |
![]() | $9.95 | Condition is New – Open box, SQUARE-D A1.86 NSNB - HEATER ELEMENT, shipping cost = $5.00 | 99.6% |
![]() | $14.99 | Condition is New – Open box, Square-D - A1.86 - Overload Relay Thermal - LOT OF (2) - NEW, FREE SHIPPING | 99.6% |
![]() | $14.99 | Top Pick! Condition is New – Open box, Lot of 2 New Square D A1.86 A 1.86 Thermal Overload Relay Heaters OG#69, FREE SHIPPING | 100.0% |
![]() | $7.50 | Condition is New – Open box, NIB. Square D Thermal Overload Relay Units Ca# 1-A1.86 ... VM-62E, shipping cost = $8.95 | 100.0% |
![]() | $15.00 | Condition is New – Open box, SQUARE D A1.86 HEATER LOT OF 2 NSNP, FREE SHIPPING | 99.8% |
![]() | $19.99 | Condition is New – Open box, New Square D A1.86 Overload Heater 1 New in Box, FREE SHIPPING | 100.0% |
![]() | $20.68 | Top Pick! Condition is New – Open box, (AN) Square D A1.86 Thermal Overload Relay Heater Unit, Motor Protection, UL, FREE SHIPPING | 99.9% |
![]() | $20.99 | Condition is New – Open box, Lot Of 3 - SQUARE D A1.86 Overload Relay Thermal Unit (LPW105O), FREE SHIPPING | 99.8% |
![]() | $24.95 | Condition is New – Open box, LOT OF 4 NEW OLD STOCK! SQUARE D 1.57-1.65A OVERLOAD RELAY THERMAL UNITS A1.86, FREE SHIPPING | 100.0% |
![]() | $10.00 | Condition is New – Open box, SQUARE D A1.86 NSNP, shipping cost = $16.50 | 99.9% |
![]() | $15.99 | Condition is New – Open box, * NIB .. Square D Thermal Overload Relay Units (Qty of 3) Ca# 1-A1.86 ... VM-63A, shipping cost = $11.95 | 100.0% |
![]() | $13.50 | Condition is New – Open box, Square D A1.86 Thermal Unit Lot of 3, shipping cost = $15.79 | 100.0% |
![]() | $23.40 | Condition is New – Open box, Square D A1.86 Thermal Unit FNOB, shipping cost = $8.75 | 99.8% |
![]() | $23.99 | Condition is New – Open box, New Lot of 3 Square D A1.86 Overload Heater Element, shipping cost = $8.75 | 99.9% |
![]() | $19.00 | Condition is New – Open box, SQUARE D A1.86 NSMP, shipping cost = $16.50 | 99.9% |
![]() | $22.50 | Top Pick! Condition is New – Open box, (5-PCS) Square D A1.86 Overload Relay Thermal Unit (SDORTU), shipping cost = $14.00 | 100.0% |
![]() | $25.99 | Top Pick! Condition is New – Open box, Square D A1.86 Heater new, shipping cost = $16.88 | 100.0% |
![]() | $27.34 | Condition is New – Open box, SQUARE D A1.86 480V 1.57-1.65A NEWS, shipping cost = $15.50 | 99.4% |
![]() | $28.00 | Condition is New – Open box, Square D A1.86 Overload Relay Thermal Unit Lot of 4, shipping cost = $14.50 | 100.0% |
![]() | $39.00 | Condition is New – Open box, Lot Of 8 Square D A1.86 Overload Relay Thermal Unit, 58524, shipping cost = $8.72 | 99.9% |
![]() | $30.00 | Condition is New – Open box, Square D A1.86 NEW (Lot of 6), shipping cost = $20.95 | ![]() |
![]() | $56.00 | Condition is New – Open box, SQUARE D A1.86 HEATER LOT OF 8 NSNP, FREE SHIPPING | 99.8% |
![]() | $55.00 | Top Pick! Condition is New – Open box, SQUARE D,A1.86,THERMAL OVERLOAD HEATER ELEMENT LOT OF 6 NOS, shipping cost = $8.75 | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $2.00 | Condition is New, Square D A1.86 Overload Relay Thermal Unit NEW In Box, shipping cost = $5.73 | 99.9% |
![]() | $7.28 | Condition is New, NEW SQUARE D A1.86 OVERLOAD HEATER, FREE SHIPPING | 100.0% |
![]() | $8.00 | Condition is New, NIB Square D Type A Overload Relay Thermal Heater Unit, Sizes A.47 - A25.2, FREE SHIPPING | 99.9% |
![]() | $9.95 | Condition is New, Square D A1.86 Overload Heater Element NEW!!! in Factory Box Free Shipping, FREE SHIPPING | 100.0% |
![]() | $7.00 | Top Pick! Condition is New, SQUARE D A1.86 Overload Relay Thermal Unit, shipping cost = $8.75 | 99.4% |
![]() | $10.00 | Condition is New, NIB Square D Thermal Unit Overload Relay Unit 1-A1.86, shipping cost = $5.97 | 99.9% |
![]() | $13.00 | Condition is New, Square D A1.86 Thermal Overload Heater Element NEW, shipping cost = $2.99 | 99.9% |
![]() | $15.00 | Condition is New, SQUARE D A1.86 HEATER NSMP, FREE SHIPPING | 99.8% |
![]() | $15.00 | Condition is New, SQUARE D 1-A1.86 HEATER NSMP, FREE SHIPPING | 99.8% |
![]() | $15.00 | Condition is New, SQUARE D 1-A1.86 HEATER NSMP, FREE SHIPPING | 99.8% |
![]() | $4.25 | Condition is New, 1 NIB SQUARE D A1.86 A 1.86 OVERLOAD RELAY THERMAL HEATER UNIT (2 AVAILABLE), shipping cost = $13.65 | ![]() |
![]() | $10.99 | Condition is New, Square D A1.86 Overload Heater Element, New, shipping cost = $8.75 | 99.4% |
![]() | $20.00 | Condition is New, SQUARE D 1-A1.86 HEATER LOT OF 2 NSMP, FREE SHIPPING | 99.8% |
![]() | $22.77 | Condition is New, Square D A1.86 Overload Relay Heater Element A186 (Pack of 3), FREE SHIPPING | 99.9% |
![]() | $16.87 | Top Pick! Condition is New, SQUARE D A1.86 Overload Relay Thermal Unit, shipping cost = $8.00 | ![]() |
![]() | $24.99 | Condition is New, Square D A1.86 Overload Relay Thermal Units (Pack of 5), FREE SHIPPING | 100.0% |
![]() | $25.00 | Condition is New, SQUARE D A1.86 HEATER LOT OF 3 NSMP, FREE SHIPPING | 99.8% |
![]() | $29.99 | Condition is New, NEW OEM (LOT of 3) A1.86 SQUARE D OVERLOAD RELAY THERMAL UNIT HEATER ELEMENT, FREE SHIPPING | 99.8% |
![]() | $23.01 | Condition is New, UpTo 3 NEW at MostElectric: A1.86 SQUARE D, shipping cost = $7.50 | 100.0% |
![]() | $30.00 | Condition is New, Square D A1.86 Thermal Overload Relay New lot of 4, FREE SHIPPING | 99.5% |
![]() | $30.00 | Condition is New, SQUARE D A1.86 HEATER LOT OF 4 NSMP, FREE SHIPPING | 99.8% |
![]() | $31.32 | Condition is New, SQUARE D A1.86 Thermal Unit, TripClass 20, MeltingAlloy 5B634, shipping cost = $6.99 | ![]() |
![]() | $32.45 | Condition is New, A1.86 - Square D Thermal Unit 1.49-1.77A 600V Motor Control Heater Element, shipping cost = $7.29 | 99.8% |
![]() | $34.99 | Top Pick! Condition is New, Lot Of 6 New In Box Square D Overload Relay Thermal Units A 1.86 0216, shipping cost = $11.95 | 96.7% |
![]() | $35.00 | Top Pick! Condition is New, SQUARE D,A1.86,OVERLOAD HEATER ELEMENT LOT OF 7 NEW, shipping cost = $11.35 | 100.0% |
![]() | $56.00 | Condition is New, SQUARE D 1-A1.86 HEATER LOT OF 7 NSMP, FREE SHIPPING | 99.8% |
![]() | $65.35 | Condition is New, Square D A1.86 Overload Relay Heater Element A186 (Pack of 9), FREE SHIPPING | 99.9% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $2.00 | Condition is Used, Square D A1.86 Overload heater (B), shipping cost = $4.50 | 100.0% |
![]() | $10.79 | Condition is Used, Square D A1.86 Overload Heater A186 A 1.86, FREE SHIPPING | ![]() |
![]() | $5.57 | Top Pick! Condition is Used, SQUARE D A 1.86 OVERLOAD RELAY THERMAL UNIT - USED ELECTRICAL BUILDING, shipping cost = $6.00 | 99.7% |
![]() | $13.85 | Condition is Used, SQUARE D A1.86 480V 1.57-1.65A USED, FREE SHIPPING | 99.4% |
![]() | $13.99 | Condition is Used, Square D Overload Relay Thermal Unit A1.86 LW Motor Protection NOS NIB, FREE SHIPPING | ![]() |
![]() | $15.95 | Condition is Used, LOT OF (4) GUARANTEED GOOD! SQUARE D OVERLOAD RELAY THERMAL UNITS A1.86, FREE SHIPPING | 100.0% |
![]() | $8.00 | Top Pick! Condition is Used, SQUARE D A1.86 OVERLOAD RELAY THERMAL UNIT, shipping cost = $8.75 | 99.9% |
![]() | $20.99 | Condition is Used, Square D A1.86 overload heater element lot of 3, shipping cost = $8.75 | 99.9% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $39.99 | Top Pick! Condition is Seller refurbished, Lot of 6 - 2 x A1.86, B45, B5.50, B4.85, A3.95 Square D Thermal Overload Relays, FREE SHIPPING | ![]() |

The A1.86 Overload Relay Thermal Unit by Square D is a versatile and reliable electrical safety device designed to protect your electrical circuits from potential overloads and thermal overloads. This thermal relay is an essential component of any electrical system, ensuring the safe and efficient operation of your appliances and equipment.
The A1.86 model is an overload relay thermal unit, which means it is specifically designed to respond to both overcurrent and temperature conditions. The overload protection function monitors the electrical current flowing through the circuit and trips the relay when the current exceeds the rated value. This prevents the circuit from being overloaded, which could potentially cause damage to the wiring or appliance.
The thermal protection function, on the other hand, monitors the temperature of the circuit and trips the relay if the temperature exceeds a certain threshold. This is particularly important for applications where the electrical load generates significant heat, such as in motors or heating elements. By tripping the relay and disconnecting the power source, the thermal protection function helps prevent potential electrical fires and other safety hazards.
The Square D A1.86 Overload Relay Thermal Unit is rated for a maximum current of 16 amperes and a maximum voltage of 250 volts. It features a compact, rugged design that is suitable for industrial and commercial applications. The relay is also UL listed, ensuring that it meets the highest safety standards.
The A1.86 model comes with a number of useful features, including a clear and easy-to-read indicator light that shows the status of the relay. It also has a quick-disconnect terminal block that makes installation and maintenance simple and efficient. The relay is designed to be easily mountable on a DIN rail for convenient installation in electrical cabinets.
In summary, the Square D A1.86 Overload Relay Thermal Unit is a high-performance and reliable electrical safety device that offers both overload and thermal protection for your electrical circuits. Its compact and rugged design, combined with its easy-to-use features, makes it an ideal choice for industrial and commercial applications where electrical safety is a top priority.
The Square A1.86 Overload Relay Thermal Unit is a crucial component in electrical systems, responsible for protecting against overloads and potential thermal issues. Let's discuss some pros and cons of investing in this device.
Pros:1. Overload Protection: The primary function of an overload relay thermal unit is to protect electrical circuits from overloading. This can prevent potential electrical fires and damage to equipment.
2. Thermal Protection: In addition to overload protection, the Square A1.86 also offers thermal protection. This feature can detect and react to excessive temperatures, preventing damage to components and ensuring the continued operation of the electrical system.
3. Easy Installation: The Square A1.86 is designed for easy installation, making it a convenient choice for both professional electricians and DIY enthusiasts.
4. Durable Construction: The unit is built with high-quality materials, ensuring durability and long-lasting performance.
5. Versatile Application: The Square A1.86 is suitable for a wide range of applications, from industrial settings to residential electrical systems.
Cons:1. Cost: The Square A1.86 Overload Relay Thermal Unit may be more expensive than some other models on the market.
2. Complexity: Compared to simpler devices, the Square A1.86 may have a more complex setup process.
3. Size: The unit is relatively large, which may require additional space in the electrical panel or distribution board.
Conclusion:The Square A1.86 Overload Relay Thermal Unit offers robust protection for electrical systems against overloads and thermal issues. Although it may be more expensive and complex than some alternatives, its durability, versatility, and advanced features make it a valuable investment for various applications.
Recommendation:If you require reliable overload and thermal protection for your electrical system, the Square A1.86 Overload Relay Thermal Unit is an excellent choice. Its advanced features and durable construction are worth the investment for ensuring the safety and efficiency of your electrical system.
Details:
This unit is a crucial element for maintaining the functionality and longevity of industrial machinery. With its thermal design, it effectively detects and manages overheating situations, making a valuable addition to any motor control system. Manufactured by the reputable brand Square d, this unit serves as a protective device for motor applications, ensuring optimal performance and preventing overloads. The Squarea1.86 overload relay thermal unit is a reliable and efficient component in industrial automation systems.
specifications indumotorol:
- brand: Square D
- mpn: A1.86
- unit type: Unit
offer indumotorol:
- prices: $2.00–$65.35
- item condition:
- New – Open box
- New
- Used
- Seller refurbished
- started: april 2, 2025
- best offers: true
- options: ship-to-home
- in stock #: 5
- availability: in stock
- sold #: 18
returns indumotorol:
- paid by: seller
- time: 30 days
- policy: returns accepted
- method: money back
seller indumotorol:
- rating: 98.0%
- city: ringgold, georgia
- # reviews: 444
shipping indumotorol:
- transit: 3-8 days
- type: fixed
- carrier: usps
- service: usps ground advantage
- class: standard
general indumotorol:
- category: Business & Industrial > Starters > Drives > Motor Controls
payments indumotorol:
- credit card: mastercard
- other
- wallet: google-pay



































































