JavaScript seems to be disabled in your browser. You should have JavaScript enabled in your browser to utilize the functionality of the website

Skip to Navigation Skip to Content

What You Can Expect:

The most in-stock parts on the planet — all OEM, all the time
Cool technology to make finding and buying parts a breeze, including Serial Number Lookup, PartSPIN® and Smart Manuals, found on partstown.com and our industry-leading mobile app
An exceptional customer experience from the team you know and trust with every email, live chat, text and phone call, provided by a friendly and knowledgeable team
Later hours than anyone else — offering support and shipping all in-stock orders until 9PM ET

ribbon image

Real OEM HVAC Parts Are In This Spring! SHOP NOW

find parts
find manuals

Find Foodservice Equipment Parts

Trane RLY03873 RELAY; MOTOR STARTING

Trane RLY03873 RELAY; MOTOR STARTING

How to get it fast to 432 15?

Ship It!

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Promotional Price:

90.74 C$ My Price: C$ 90.74

Add to cart

more Purchase Options for Shipping
1-Hour Pickup!

Quantity Available:

Pickup hours: Mon - Fri
My Price:

Add to cart

more pickup options

See Local Inventory

Card Label

Billing Address

First Name

Last Name

Address Line

Apt or Suite Number

City

Country/Region

State/Province

Zip/Postal Code

Something went wrong. Please try again.

Quantity Available:

0

Quantity Available:

0

Manufacturer:

Trane

Manufacturer #:

RLY03873

Parts Town #:

TRNRLY03873

Units:

Each

Fits Models:

View Models List

Trane RLY03873 Genuine OEM Replacement Part

A Trane RLY03873 Relay engages motor starting with reliable SPST control, supporting consistent operation across demanding HVAC systems.

Real OEM relays uphold factory coverage by matching approved specs, helping you make repairs that keep the warranty intact
Product Type: Motor starting relay
Contact Configuration: SPST
Current Rating: 30A
Poles: 1

Required fields.

Card Label

Expiration Date

Billing Address

First Name

Last Name

Address Line

Apt or Suite Number

City

Country/Region

State/Province

Zip/Postal Code

Fits Models
Specs

Length:

1 in / 2.54 cm
Width:

1 in / 2.54 cm
Height:

1 in / 2.54 cm
Weight:

Not Available